Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel

For investigating the impact of ferritic morphology on yield strength (YS) of the high-heat-input welding induced coarse-grained heat-affected zone (CGHAZ) of a low carbon Mo-V-N-Ti-B steel, a group of particular welding heat inputs were designed to obtain different ferritic microstructures in CGHAZ...

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Autores principales:	Leping Wang, Huibing Fan, Genhao Shi, Qiuming Wang, Qingfeng Wang, Fucheng Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	low carbon Mo-V-N-Ti-B steel CGHAZ ferritic morphology yield strength high-heat-input-welding Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/685b3692fb004c1dba4bb209c31b18f0
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spelling	oai:doaj.org-article:685b3692fb004c1dba4bb209c31b18f02021-11-25T18:22:30ZEffect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel10.3390/met111118632075-4701https://doaj.org/article/685b3692fb004c1dba4bb209c31b18f02021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1863https://doaj.org/toc/2075-4701For investigating the impact of ferritic morphology on yield strength (YS) of the high-heat-input welding induced coarse-grained heat-affected zone (CGHAZ) of a low carbon Mo-V-N-Ti-B steel, a group of particular welding heat inputs were designed to obtain different ferritic microstructures in CGHAZ. The tensile properties were estimated from typical samples with ferritic microstructures. The mixed microstructures dominated by the intragranular polygonal ferrite (IGPF), the intragranular acicular ferrite (IGAF), and the granular bainite (GB) were obtained at the heat inputs of 35, 65, 85 and 120 kJ/cm, respectively. When the main microstructure changed from IGPF to IGAF and GB, YS increased first and then decreased. The microstructure consisting mainly of IGAF possessed the maximum YS. As the main microstructure changed from IGPF to IGAF and GB, the contribution of grain refinement strengthening to YS was estimated to be elevated remarkably. This means the strength of CGHAZ in a low-carbon steel subjected to the high-heat-input welding could be enhanced by promoting the fine-grained AF and GB formation.Leping WangHuibing FanGenhao ShiQiuming WangQingfeng WangFucheng ZhangMDPI AGarticlelow carbon Mo-V-N-Ti-B steelCGHAZferritic morphologyyield strengthhigh-heat-input-weldingMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1863, p 1863 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	low carbon Mo-V-N-Ti-B steel CGHAZ ferritic morphology yield strength high-heat-input-welding Mining engineering. Metallurgy TN1-997
spellingShingle	low carbon Mo-V-N-Ti-B steel CGHAZ ferritic morphology yield strength high-heat-input-welding Mining engineering. Metallurgy TN1-997 Leping Wang Huibing Fan Genhao Shi Qiuming Wang Qingfeng Wang Fucheng Zhang Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel
description	For investigating the impact of ferritic morphology on yield strength (YS) of the high-heat-input welding induced coarse-grained heat-affected zone (CGHAZ) of a low carbon Mo-V-N-Ti-B steel, a group of particular welding heat inputs were designed to obtain different ferritic microstructures in CGHAZ. The tensile properties were estimated from typical samples with ferritic microstructures. The mixed microstructures dominated by the intragranular polygonal ferrite (IGPF), the intragranular acicular ferrite (IGAF), and the granular bainite (GB) were obtained at the heat inputs of 35, 65, 85 and 120 kJ/cm, respectively. When the main microstructure changed from IGPF to IGAF and GB, YS increased first and then decreased. The microstructure consisting mainly of IGAF possessed the maximum YS. As the main microstructure changed from IGPF to IGAF and GB, the contribution of grain refinement strengthening to YS was estimated to be elevated remarkably. This means the strength of CGHAZ in a low-carbon steel subjected to the high-heat-input welding could be enhanced by promoting the fine-grained AF and GB formation.
format	article
author	Leping Wang Huibing Fan Genhao Shi Qiuming Wang Qingfeng Wang Fucheng Zhang
author_facet	Leping Wang Huibing Fan Genhao Shi Qiuming Wang Qingfeng Wang Fucheng Zhang
author_sort	Leping Wang
title	Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel
title_short	Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel
title_full	Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel
title_fullStr	Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel
title_full_unstemmed	Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel
title_sort	effect of ferritic morphology on yield strength of cghaz in a low carbon mo-v-n-ti-b steel
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/685b3692fb004c1dba4bb209c31b18f0
work_keys_str_mv	AT lepingwang effectofferriticmorphologyonyieldstrengthofcghazinalowcarbonmovntibsteel AT huibingfan effectofferriticmorphologyonyieldstrengthofcghazinalowcarbonmovntibsteel AT genhaoshi effectofferriticmorphologyonyieldstrengthofcghazinalowcarbonmovntibsteel AT qiumingwang effectofferriticmorphologyonyieldstrengthofcghazinalowcarbonmovntibsteel AT qingfengwang effectofferriticmorphologyonyieldstrengthofcghazinalowcarbonmovntibsteel AT fuchengzhang effectofferriticmorphologyonyieldstrengthofcghazinalowcarbonmovntibsteel
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Effect of Ferritic Morphology on Yield Strength of CGHAZ in a Low Carbon Mo-V-N-Ti-B Steel

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