Effect of isothermal quenching on microstructure and hardness of GCr15 steel

Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature in...
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Autor*in:	Y. Su [verfasserIn] L.J. Miao [verfasserIn] X.F. Yu [verfasserIn] T.M. Liu [verfasserIn] L. Liu [verfasserIn] J.L. Liu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	GCr15 steel Isothermal quenching Bainite Carbide Hardness

Übergeordnetes Werk:	In: Journal of Materials Research and Technology - Elsevier, 2015, 15(2021), Seite 2820-2827
Übergeordnetes Werk:	volume:15 ; year:2021 ; pages:2820-2827

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.jmrt.2021.09.096

Katalog-ID:	DOAJ003092070

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520			\|a Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation.
650		4	\|a GCr15 steel
650		4	\|a Isothermal quenching
650		4	\|a Bainite
650		4	\|a Carbide
650		4	\|a Hardness
653		0	\|a Mining engineering. Metallurgy
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700	0		\|a X.F. Yu \|e verfasserin \|4 aut
700	0		\|a T.M. Liu \|e verfasserin \|4 aut
700	0		\|a L. Liu \|e verfasserin \|4 aut
700	0		\|a J.L. Liu \|e verfasserin \|4 aut
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spelling	10.1016/j.jmrt.2021.09.096 doi (DE-627)DOAJ003092070 (DE-599)DOAJ9faee7d540fb4568be6475ddaaca09b8 DE-627 ger DE-627 rakwb eng TN1-997 Y. Su verfasserin aut Effect of isothermal quenching on microstructure and hardness of GCr15 steel 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation. GCr15 steel Isothermal quenching Bainite Carbide Hardness Mining engineering. Metallurgy L.J. Miao verfasserin aut X.F. Yu verfasserin aut T.M. Liu verfasserin aut L. Liu verfasserin aut J.L. Liu verfasserin aut In Journal of Materials Research and Technology Elsevier, 2015 15(2021), Seite 2820-2827 (DE-627)768093163 (DE-600)2732709-7 22140697 nnns volume:15 year:2021 pages:2820-2827 https://doi.org/10.1016/j.jmrt.2021.09.096 kostenfrei https://doaj.org/article/9faee7d540fb4568be6475ddaaca09b8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2238785421010851 kostenfrei https://doaj.org/toc/2238-7854 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 15 2021 2820-2827
allfields_unstemmed	10.1016/j.jmrt.2021.09.096 doi (DE-627)DOAJ003092070 (DE-599)DOAJ9faee7d540fb4568be6475ddaaca09b8 DE-627 ger DE-627 rakwb eng TN1-997 Y. Su verfasserin aut Effect of isothermal quenching on microstructure and hardness of GCr15 steel 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation. GCr15 steel Isothermal quenching Bainite Carbide Hardness Mining engineering. Metallurgy L.J. Miao verfasserin aut X.F. Yu verfasserin aut T.M. Liu verfasserin aut L. Liu verfasserin aut J.L. Liu verfasserin aut In Journal of Materials Research and Technology Elsevier, 2015 15(2021), Seite 2820-2827 (DE-627)768093163 (DE-600)2732709-7 22140697 nnns volume:15 year:2021 pages:2820-2827 https://doi.org/10.1016/j.jmrt.2021.09.096 kostenfrei https://doaj.org/article/9faee7d540fb4568be6475ddaaca09b8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2238785421010851 kostenfrei https://doaj.org/toc/2238-7854 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 15 2021 2820-2827
allfieldsGer	10.1016/j.jmrt.2021.09.096 doi (DE-627)DOAJ003092070 (DE-599)DOAJ9faee7d540fb4568be6475ddaaca09b8 DE-627 ger DE-627 rakwb eng TN1-997 Y. Su verfasserin aut Effect of isothermal quenching on microstructure and hardness of GCr15 steel 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation. GCr15 steel Isothermal quenching Bainite Carbide Hardness Mining engineering. Metallurgy L.J. Miao verfasserin aut X.F. Yu verfasserin aut T.M. Liu verfasserin aut L. Liu verfasserin aut J.L. Liu verfasserin aut In Journal of Materials Research and Technology Elsevier, 2015 15(2021), Seite 2820-2827 (DE-627)768093163 (DE-600)2732709-7 22140697 nnns volume:15 year:2021 pages:2820-2827 https://doi.org/10.1016/j.jmrt.2021.09.096 kostenfrei https://doaj.org/article/9faee7d540fb4568be6475ddaaca09b8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2238785421010851 kostenfrei https://doaj.org/toc/2238-7854 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 15 2021 2820-2827
allfieldsSound	10.1016/j.jmrt.2021.09.096 doi (DE-627)DOAJ003092070 (DE-599)DOAJ9faee7d540fb4568be6475ddaaca09b8 DE-627 ger DE-627 rakwb eng TN1-997 Y. Su verfasserin aut Effect of isothermal quenching on microstructure and hardness of GCr15 steel 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation. GCr15 steel Isothermal quenching Bainite Carbide Hardness Mining engineering. Metallurgy L.J. Miao verfasserin aut X.F. Yu verfasserin aut T.M. Liu verfasserin aut L. Liu verfasserin aut J.L. Liu verfasserin aut In Journal of Materials Research and Technology Elsevier, 2015 15(2021), Seite 2820-2827 (DE-627)768093163 (DE-600)2732709-7 22140697 nnns volume:15 year:2021 pages:2820-2827 https://doi.org/10.1016/j.jmrt.2021.09.096 kostenfrei https://doaj.org/article/9faee7d540fb4568be6475ddaaca09b8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2238785421010851 kostenfrei https://doaj.org/toc/2238-7854 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 15 2021 2820-2827
language	English
source	In Journal of Materials Research and Technology 15(2021), Seite 2820-2827 volume:15 year:2021 pages:2820-2827
sourceStr	In Journal of Materials Research and Technology 15(2021), Seite 2820-2827 volume:15 year:2021 pages:2820-2827
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	GCr15 steel Isothermal quenching Bainite Carbide Hardness Mining engineering. Metallurgy
isfreeaccess_bool	true
container_title	Journal of Materials Research and Technology
authorswithroles_txt_mv	Y. Su @@aut@@ L.J. Miao @@aut@@ X.F. Yu @@aut@@ T.M. Liu @@aut@@ L. Liu @@aut@@ J.L. Liu @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
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id	DOAJ003092070
language_de	englisch
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Su</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Effect of isothermal quenching on microstructure and hardness of GCr15 steel</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2021</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">GCr15 steel</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Isothermal quenching</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Bainite</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Carbide</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Hardness</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Mining engineering. 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callnumber-first	T - Technology
author	Y. Su
spellingShingle	Y. Su misc TN1-997 misc GCr15 steel misc Isothermal quenching misc Bainite misc Carbide misc Hardness misc Mining engineering. Metallurgy Effect of isothermal quenching on microstructure and hardness of GCr15 steel
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topic_title	TN1-997 Effect of isothermal quenching on microstructure and hardness of GCr15 steel GCr15 steel Isothermal quenching Bainite Carbide Hardness
topic	misc TN1-997 misc GCr15 steel misc Isothermal quenching misc Bainite misc Carbide misc Hardness misc Mining engineering. Metallurgy
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title	Effect of isothermal quenching on microstructure and hardness of GCr15 steel
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title_full	Effect of isothermal quenching on microstructure and hardness of GCr15 steel
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title_sort	effect of isothermal quenching on microstructure and hardness of gcr15 steel
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title_auth	Effect of isothermal quenching on microstructure and hardness of GCr15 steel
abstract	Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation.
abstractGer	Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation.
abstract_unstemmed	Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation.
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title_short	Effect of isothermal quenching on microstructure and hardness of GCr15 steel
url	https://doi.org/10.1016/j.jmrt.2021.09.096 https://doaj.org/article/9faee7d540fb4568be6475ddaaca09b8 http://www.sciencedirect.com/science/article/pii/S2238785421010851 https://doaj.org/toc/2238-7854
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Results show that, at the solid solution temperature of 860 °C, as the isothermal quenching temperature increases from 200 °C to 230 °C, the bainite transformation rate in GCr15 steel increases. At the initial stage of isothermal quenching, there is relatively less bainite transformation in GCr15 steel, but the increasing rate is relatively larger. With the extension of the isothermal time, the bainite content increases, and the increasing rate gradually becomes slower. The above phenomena are related to the existence of the incubation period of bainite transformation, the driving force of bainite ferrite nucleation, and the stability of undercooled austenite. As isothermal time increases, the carbide content decreases, while the carbide size generally increases, which is related to the dissolution of some undissolved carbides due to the change of the surrounding carbon concentration and the Ostwald ripening mechanism. The hardness of GCr15 steel is obviously reduced at the stage of the first 1 h, while between 2 and 4 h the hardness decrease of GCr15 steel tends to be gentle, which is related to the increase of bainite content, the weakening of dispersion strengthening effect resulted from the increase of carbide size, and the self-inhibiting behavior of the bainite transformation.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">GCr15 steel</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Isothermal quenching</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Bainite</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Carbide</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Hardness</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Mining engineering. Metallurgy</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">L.J. Miao</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">X.F. Yu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">T.M. Liu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">L. Liu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">J.L. Liu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">In</subfield><subfield code="t">Journal of Materials Research and Technology</subfield><subfield code="d">Elsevier, 2015</subfield><subfield code="g">15(2021), Seite 2820-2827</subfield><subfield code="w">(DE-627)768093163</subfield><subfield code="w">(DE-600)2732709-7</subfield><subfield code="x">22140697</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:15</subfield><subfield code="g">year:2021</subfield><subfield code="g">pages:2820-2827</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.jmrt.2021.09.096</subfield><subfield code="z">kostenfrei</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doaj.org/article/9faee7d540fb4568be6475ddaaca09b8</subfield><subfield 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Effect of isothermal quenching on microstructure and hardness of GCr15 steel

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