Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel

In this work, the effects of grain size on the tensile properties, serrated flow, Portevin-Le Châtelier (PLC) band evolution, dislocation density, and microstructure evolution of Fe–22Mn-0.6C steel were investigated using digital image correlation (DIC), X-ray diffraction (XRD), transmission electro...

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Autores principales:	Huanyou Liu, Shuai Liu, Chaozhang Wei, Lihe Qian, Yunli Feng, Fucheng Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	High manganese steel C-bearing TWIP steel Grain size Serrated flow Twin substructure Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/adcd249d8eff424086cb4ae5178811a8
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spelling	oai:doaj.org-article:adcd249d8eff424086cb4ae5178811a82021-12-04T04:34:30ZEffect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel2238-785410.1016/j.jmrt.2021.11.083https://doaj.org/article/adcd249d8eff424086cb4ae5178811a82021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421013624https://doaj.org/toc/2238-7854In this work, the effects of grain size on the tensile properties, serrated flow, Portevin-Le Châtelier (PLC) band evolution, dislocation density, and microstructure evolution of Fe–22Mn-0.6C steel were investigated using digital image correlation (DIC), X-ray diffraction (XRD), transmission electron microscope (TEM) and monotonic tensile tests. Results show that the yield strength, tensile strength, and work hardening value of Fe–22Mn-0.6C steel increase whereas its elongation decreases with decreasing grain size. The critical strain of serration decreases whereas the amplitude of serration increases with decreasing grain size. Moreover, the plateau of serrations is larger and that the strain concentration within PLC bands is more severe in fine-grained steel than in coarse-grained steel. The dynamic strain aging (DSA) behavior of the steel is enhanced by grain refinement. The speed of PLC band movement decreases faster in fine-grained steel than in coarse-grained steel, which results in a decrease in plasticity. XRD and TEM analyses show that the high dislocation density and unique twin substructure may be the main reasons for the strong DSA phenomenon observed in fine-grained steel.Huanyou LiuShuai LiuChaozhang WeiLihe QianYunli FengFucheng ZhangElsevierarticleHigh manganese steelC-bearing TWIP steelGrain sizeSerrated flowTwin substructureMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 6387-6394 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	High manganese steel C-bearing TWIP steel Grain size Serrated flow Twin substructure Mining engineering. Metallurgy TN1-997
spellingShingle	High manganese steel C-bearing TWIP steel Grain size Serrated flow Twin substructure Mining engineering. Metallurgy TN1-997 Huanyou Liu Shuai Liu Chaozhang Wei Lihe Qian Yunli Feng Fucheng Zhang Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel
description	In this work, the effects of grain size on the tensile properties, serrated flow, Portevin-Le Châtelier (PLC) band evolution, dislocation density, and microstructure evolution of Fe–22Mn-0.6C steel were investigated using digital image correlation (DIC), X-ray diffraction (XRD), transmission electron microscope (TEM) and monotonic tensile tests. Results show that the yield strength, tensile strength, and work hardening value of Fe–22Mn-0.6C steel increase whereas its elongation decreases with decreasing grain size. The critical strain of serration decreases whereas the amplitude of serration increases with decreasing grain size. Moreover, the plateau of serrations is larger and that the strain concentration within PLC bands is more severe in fine-grained steel than in coarse-grained steel. The dynamic strain aging (DSA) behavior of the steel is enhanced by grain refinement. The speed of PLC band movement decreases faster in fine-grained steel than in coarse-grained steel, which results in a decrease in plasticity. XRD and TEM analyses show that the high dislocation density and unique twin substructure may be the main reasons for the strong DSA phenomenon observed in fine-grained steel.
format	article
author	Huanyou Liu Shuai Liu Chaozhang Wei Lihe Qian Yunli Feng Fucheng Zhang
author_facet	Huanyou Liu Shuai Liu Chaozhang Wei Lihe Qian Yunli Feng Fucheng Zhang
author_sort	Huanyou Liu
title	Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel
title_short	Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel
title_full	Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel
title_fullStr	Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel
title_full_unstemmed	Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel
title_sort	effect of grain size on dynamic strain aging behavior of c-bearing high mn twinning-induced plasticity steel
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/adcd249d8eff424086cb4ae5178811a8
work_keys_str_mv	AT huanyouliu effectofgrainsizeondynamicstrainagingbehaviorofcbearinghighmntwinninginducedplasticitysteel AT shuailiu effectofgrainsizeondynamicstrainagingbehaviorofcbearinghighmntwinninginducedplasticitysteel AT chaozhangwei effectofgrainsizeondynamicstrainagingbehaviorofcbearinghighmntwinninginducedplasticitysteel AT liheqian effectofgrainsizeondynamicstrainagingbehaviorofcbearinghighmntwinninginducedplasticitysteel AT yunlifeng effectofgrainsizeondynamicstrainagingbehaviorofcbearinghighmntwinninginducedplasticitysteel AT fuchengzhang effectofgrainsizeondynamicstrainagingbehaviorofcbearinghighmntwinninginducedplasticitysteel
_version_	1718372988505554944

Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel

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