Mechanical properties deterioration of high strength steels after high temperature exposure
Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after ex...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhou, Huanting [verfasserIn] Wang, Weiyong [verfasserIn] Wang, Kang [verfasserIn] Xu, Lei [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Construction and building materials - Amsterdam [u.a.] : Elsevier Science, 1987, 199, Seite 664-675 |
|---|---|
| Übergeordnetes Werk: |
volume:199 ; pages:664-675 |
| DOI / URN: |
10.1016/j.conbuildmat.2018.12.058 |
|---|
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| 520 | |a Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. | ||
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10.1016/j.conbuildmat.2018.12.058 doi (DE-627)ELV001526219 (ELSEVIER)S0950-0618(18)33042-3 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Zhou, Huanting verfasserin (orcid)0000-0002-2126-1731 aut Mechanical properties deterioration of high strength steels after high temperature exposure 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. High strength steel Temperature Mechanical properties Stress-strain relationship Wang, Weiyong verfasserin aut Wang, Kang verfasserin aut Xu, Lei verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 199, Seite 664-675 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:199 pages:664-675 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4393 56.45 Baustoffkunde AR 199 664-675 |
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10.1016/j.conbuildmat.2018.12.058 doi (DE-627)ELV001526219 (ELSEVIER)S0950-0618(18)33042-3 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Zhou, Huanting verfasserin (orcid)0000-0002-2126-1731 aut Mechanical properties deterioration of high strength steels after high temperature exposure 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. High strength steel Temperature Mechanical properties Stress-strain relationship Wang, Weiyong verfasserin aut Wang, Kang verfasserin aut Xu, Lei verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 199, Seite 664-675 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:199 pages:664-675 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4393 56.45 Baustoffkunde AR 199 664-675 |
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10.1016/j.conbuildmat.2018.12.058 doi (DE-627)ELV001526219 (ELSEVIER)S0950-0618(18)33042-3 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Zhou, Huanting verfasserin (orcid)0000-0002-2126-1731 aut Mechanical properties deterioration of high strength steels after high temperature exposure 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. High strength steel Temperature Mechanical properties Stress-strain relationship Wang, Weiyong verfasserin aut Wang, Kang verfasserin aut Xu, Lei verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 199, Seite 664-675 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:199 pages:664-675 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4393 56.45 Baustoffkunde AR 199 664-675 |
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10.1016/j.conbuildmat.2018.12.058 doi (DE-627)ELV001526219 (ELSEVIER)S0950-0618(18)33042-3 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Zhou, Huanting verfasserin (orcid)0000-0002-2126-1731 aut Mechanical properties deterioration of high strength steels after high temperature exposure 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. High strength steel Temperature Mechanical properties Stress-strain relationship Wang, Weiyong verfasserin aut Wang, Kang verfasserin aut Xu, Lei verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 199, Seite 664-675 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:199 pages:664-675 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4393 56.45 Baustoffkunde AR 199 664-675 |
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10.1016/j.conbuildmat.2018.12.058 doi (DE-627)ELV001526219 (ELSEVIER)S0950-0618(18)33042-3 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Zhou, Huanting verfasserin (orcid)0000-0002-2126-1731 aut Mechanical properties deterioration of high strength steels after high temperature exposure 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. High strength steel Temperature Mechanical properties Stress-strain relationship Wang, Weiyong verfasserin aut Wang, Kang verfasserin aut Xu, Lei verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 199, Seite 664-675 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:199 pages:664-675 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4393 56.45 Baustoffkunde AR 199 664-675 |
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Mechanical properties deterioration of high strength steels after high temperature exposure |
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Mechanical properties deterioration of high strength steels after high temperature exposure |
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Zhou, Huanting Wang, Weiyong Wang, Kang Xu, Lei |
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10.1016/j.conbuildmat.2018.12.058 |
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mechanical properties deterioration of high strength steels after high temperature exposure |
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Mechanical properties deterioration of high strength steels after high temperature exposure |
| abstract |
Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. |
| abstractGer |
Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. |
| abstract_unstemmed |
Presented in this paper are test results on mechanical properties of high strength Q690 steel after being exposed to high temperatures. Yield strength, tensile strength, elastic modulus and ratio of ultimate elongation were obtained based on tension stress-strain relationships of Q690 steel after exposure to temperature ranging from 300 to 1000 °C. Two cooling methods, namely air cooling and water cooling, were applied to cool down the heated specimens from high temperature to ambient condition. The mechanical properties comparison on different high strength steels with various thickness are carried out to investigate the effect of thickness on reduction factors of strength and elastic modulus of high strength steels after high temperature exposure. The study shows that the strength deterioration after being exposed to high temperatures is not significant for the temperature up to 600 °C, no matter which cooling method is applied. The strength reduction is approximately 25% after being exposed to temperature 700 °C. However, when the air cooling is applied, the strength decreases significantly and the ultimate elongation increases noticeably being exposed to temperature 800 °C−1000 °C but the opposite is found when water cooling is applied. The influence of elevated temperature and cooling method on the elastic modulus is negligible. The deteriorations of the material properties are different for different steels. The strength deterioration of thinner steel plate is more significant than that of thicker steel plate. Equations to predict residual factors of mechanical properties of high strength Q690 steel with 20 mm thickness were proposed to evaluate the post fire capacity of high strength Q690 steel members. |
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Mechanical properties deterioration of high strength steels after high temperature exposure |
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