Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb

A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the se...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Gu, Yejun [verfasserIn] Xiang, Yang [verfasserIn] Srolovitz, David J. [verfasserIn] El-Awady, Jaafar A. [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion

Übergeordnetes Werk:	Enthalten in: Scripta materialia - Amsterdam [u.a.] : Elsevier Science, 1996, 155, Seite 155-159
Übergeordnetes Werk:	volume:155 ; pages:155-159

DOI / URN:	10.1016/j.scriptamat.2018.06.035

Katalog-ID:	ELV00010647X

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520			\|a A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials.
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650		4	\|a Dislocation dynamics
650		4	\|a Dislocation climb
650		4	\|a Bulk diffusion
650		4	\|a Pipe diffusion
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allfields	10.1016/j.scriptamat.2018.06.035 doi (DE-627)ELV00010647X (ELSEVIER)S1359-6462(18)30399-3 DE-627 ger DE-627 rda eng 670 DE-600 51.00 bkl Gu, Yejun verfasserin (orcid)0000-0001-6351-5982 aut Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials. Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion Xiang, Yang verfasserin aut Srolovitz, David J. verfasserin aut El-Awady, Jaafar A. verfasserin (orcid)0000-0002-5715-2481 aut Enthalten in Scripta materialia Amsterdam [u.a.] : Elsevier Science, 1996 155, Seite 155-159 Online-Ressource (DE-627)320531694 (DE-600)2015843-9 (DE-576)098474251 1359-6462 nnns volume:155 pages:155-159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_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 51.00 Werkstoffkunde: Allgemeines AR 155 155-159
spelling	10.1016/j.scriptamat.2018.06.035 doi (DE-627)ELV00010647X (ELSEVIER)S1359-6462(18)30399-3 DE-627 ger DE-627 rda eng 670 DE-600 51.00 bkl Gu, Yejun verfasserin (orcid)0000-0001-6351-5982 aut Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials. Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion Xiang, Yang verfasserin aut Srolovitz, David J. verfasserin aut El-Awady, Jaafar A. verfasserin (orcid)0000-0002-5715-2481 aut Enthalten in Scripta materialia Amsterdam [u.a.] : Elsevier Science, 1996 155, Seite 155-159 Online-Ressource (DE-627)320531694 (DE-600)2015843-9 (DE-576)098474251 1359-6462 nnns volume:155 pages:155-159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_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 51.00 Werkstoffkunde: Allgemeines AR 155 155-159
allfields_unstemmed	10.1016/j.scriptamat.2018.06.035 doi (DE-627)ELV00010647X (ELSEVIER)S1359-6462(18)30399-3 DE-627 ger DE-627 rda eng 670 DE-600 51.00 bkl Gu, Yejun verfasserin (orcid)0000-0001-6351-5982 aut Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials. Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion Xiang, Yang verfasserin aut Srolovitz, David J. verfasserin aut El-Awady, Jaafar A. verfasserin (orcid)0000-0002-5715-2481 aut Enthalten in Scripta materialia Amsterdam [u.a.] : Elsevier Science, 1996 155, Seite 155-159 Online-Ressource (DE-627)320531694 (DE-600)2015843-9 (DE-576)098474251 1359-6462 nnns volume:155 pages:155-159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_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 51.00 Werkstoffkunde: Allgemeines AR 155 155-159
allfieldsGer	10.1016/j.scriptamat.2018.06.035 doi (DE-627)ELV00010647X (ELSEVIER)S1359-6462(18)30399-3 DE-627 ger DE-627 rda eng 670 DE-600 51.00 bkl Gu, Yejun verfasserin (orcid)0000-0001-6351-5982 aut Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials. Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion Xiang, Yang verfasserin aut Srolovitz, David J. verfasserin aut El-Awady, Jaafar A. verfasserin (orcid)0000-0002-5715-2481 aut Enthalten in Scripta materialia Amsterdam [u.a.] : Elsevier Science, 1996 155, Seite 155-159 Online-Ressource (DE-627)320531694 (DE-600)2015843-9 (DE-576)098474251 1359-6462 nnns volume:155 pages:155-159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_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 51.00 Werkstoffkunde: Allgemeines AR 155 155-159
allfieldsSound	10.1016/j.scriptamat.2018.06.035 doi (DE-627)ELV00010647X (ELSEVIER)S1359-6462(18)30399-3 DE-627 ger DE-627 rda eng 670 DE-600 51.00 bkl Gu, Yejun verfasserin (orcid)0000-0001-6351-5982 aut Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials. Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion Xiang, Yang verfasserin aut Srolovitz, David J. verfasserin aut El-Awady, Jaafar A. verfasserin (orcid)0000-0002-5715-2481 aut Enthalten in Scripta materialia Amsterdam [u.a.] : Elsevier Science, 1996 155, Seite 155-159 Online-Ressource (DE-627)320531694 (DE-600)2015843-9 (DE-576)098474251 1359-6462 nnns volume:155 pages:155-159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_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_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 51.00 Werkstoffkunde: Allgemeines AR 155 155-159
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author	Gu, Yejun
spellingShingle	Gu, Yejun ddc 670 bkl 51.00 misc Grain boundaries misc Dislocation dynamics misc Dislocation climb misc Bulk diffusion misc Pipe diffusion Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb
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topic_title	670 DE-600 51.00 bkl Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb Grain boundaries Dislocation dynamics Dislocation climb Bulk diffusion Pipe diffusion
topic	ddc 670 bkl 51.00 misc Grain boundaries misc Dislocation dynamics misc Dislocation climb misc Bulk diffusion misc Pipe diffusion
topic_unstemmed	ddc 670 bkl 51.00 misc Grain boundaries misc Dislocation dynamics misc Dislocation climb misc Bulk diffusion misc Pipe diffusion
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title	Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb
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title_full	Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb
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author_browse	Gu, Yejun Xiang, Yang Srolovitz, David J. El-Awady, Jaafar A.
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title_sort	self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb
title_auth	Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb
abstract	A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials.
abstractGer	A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials.
abstract_unstemmed	A new analytical model was developed to quantify the role of dislocation climb assisted by vacancy pipe and bulk diffusion in controlling the damage resistance and self-healing of perturbed low angle grain boundaries. Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. The extent of this self-healing increases with decreasing grain size, which explains the enhanced damage resistance of nanocrystalline materials.
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title_short	Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb
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author2	Xiang, Yang Srolovitz, David J. El-Awady, Jaafar A.
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doi_str	10.1016/j.scriptamat.2018.06.035
up_date	2024-07-06T16:53:01.653Z
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Dislocation climb assisted by vacancy pipe diffusion predominantly controls the self-healing process at lower temperatures, while that assisted by bulk diffusion becomes important only at higher temperatures. A relaxation time for the perturbed grain boundary structure was also derived to quantify the time associated with the self-healing process. 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Self-healing of low angle grain boundaries by vacancy diffusion and dislocation climb

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