Effect of Bainite Volume Fraction on Deformability of Mesostructures for Ferrite/Bainite Dual-Phase Steel

doi:10.1155/2020/8159058

IMR OpenIR

	Effect of Bainite Volume Fraction on Deformability of Mesostructures for Ferrite/Bainite Dual-Phase Steel
	Qiao, Gui-ying; Zhao, Zhong-tao; Shi, Xian-bo; Wang, Jun-si; Xiao, Fu-ren
	2020-11-24
发表期刊	ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
卷号	2020
摘要	To obtain high strength and excellent deformability for ferrite/bainite dual-phase (F/B DP) pipeline steel for gas pipelines based on strain-based design, the volume fractions of ferrite and bainite should be considered first. In this work, abstract representative volume elements (RVE) of finite element models (FEMs) of mesostructure for F/B DP pipeline steel with volume fractions of bainite between 30% and 58% were established, and the effects of volume fraction of bainite on the tensile properties and deformation compatibility were studied. Results show that the stress and strain in the mesostructure were primarily distributed in the bainite and ferrite, respectively, and strain concentration occurs at the ferrite/bainite interface. With increasing volume fractions of bainite, the strain localization factor (SLF) and strain ratio of ferrite with bainite (epsilon(F)/epsilon(B)) decrease, which can improve the deformation compatibility of the F/B DP pipeline steel. However, the stress ratio of bainite with ferrite (sigma(B)/sigma(F)) and the contributions of bainite to stress and strain sequentially increase, and, as a result, the strength increases and the ductility decreases. Therefore, a balance of strength and deformability can be obtained when the optimal volume fraction of bainite is in the range of 40% to 48%.
DOI	10.1155/2020/8159058
WOS记录号	WOS:000598508000002
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155655
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Qiao, Gui-ying,Zhao, Zhong-tao,Shi, Xian-bo,et al. Effect of Bainite Volume Fraction on Deformability of Mesostructures for Ferrite/Bainite Dual-Phase Steel[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2020,2020.
APA	Qiao, Gui-ying,Zhao, Zhong-tao,Shi, Xian-bo,Wang, Jun-si,&Xiao, Fu-ren.(2020).Effect of Bainite Volume Fraction on Deformability of Mesostructures for Ferrite/Bainite Dual-Phase Steel.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2020.
MLA	Qiao, Gui-ying,et al."Effect of Bainite Volume Fraction on Deformability of Mesostructures for Ferrite/Bainite Dual-Phase Steel".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING 2020(2020).