Effect of strain inhomogeneity on flow behavior, dynamic recrystallization and substructure evolution of a 904 L super austenitic stainless steel

doi:10.1016/j.mtcomm.2023.107140

IMR OpenIR

	Effect of strain inhomogeneity on flow behavior, dynamic recrystallization and substructure evolution of a 904 L super austenitic stainless steel
	Lan, Liangyun 1; Zhang, Yiting 1; Fu, Yifeng 1; Guo, You 2; Shi, Quanqiang 3
通讯作者	Lan, Liangyun(lanly@me.neu.edu.cn) ; Shi, Quanqiang(qqshi12b@imr.ac.cn)
	2023-12-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	37 页码:11
摘要	In this work, two typical deformation processes were conducted on a 904 L super austenitic stainless steel to investigate its hot deformation behavior. Two regions with distinct effective strains were selected on identical cross section to examine the microstructural features, including substructures in the deformed matrix and dynamically recrystallized grains. The flow stress curves generally reflect the physical events that occurred at low strain range. When inhomogeneous microstructure and external factors such as friction become more remarkable at high strain level, some metallurgical events (e.g., partial dynamic recrystallization) are hard to be deduced from the flow curves. Meanwhile, strain dependent friction correction on the flow curves does not completely eliminate an obvious abnormal increase in flow stress, especially for the process with the deformation condition of 900 celcius -1 s-1. Based on the crystallographic analysis on the barreling zone of the deformed samples, it can be concluded that the strain-induced sub-boundaries that formed in the deformed matrix play a vital role in restricting the material flow behavior because these dense boundaries have a Hall-Petch strengthening effect. This is an intrinsic microstructure mechanism to explain the reason that the flow stress increases abnormally at large strains in the absence of dynamic recrystallization. In addition, the formation of twin boundaries at different deformation conditions are also discussed.
关键词	904 L super austenitic stainless steel Dynamic recrystallization EBSD Substructure Twin boundary
资助者	National Scholarship Funds ; Fundamental Research Funds for the Central Universities of China
DOI	10.1016/j.mtcomm.2023.107140
收录类别	SCI
语种	英语
资助项目	National Scholarship Funds ; Fundamental Research Funds for the Central Universities of China[N2103021]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001081686900001
出版者	ELSEVIER
引用统计	被引频次：5[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/321006/179386
专题	中国科学院金属研究所
通讯作者	Lan, Liangyun; Shi, Quanqiang
作者单位	1.Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110819, Liaoning, Peoples R China 2.Fushun Special Equipment Supervis & Inspect Inst, Fushun 113000, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lan, Liangyun,Zhang, Yiting,Fu, Yifeng,et al. Effect of strain inhomogeneity on flow behavior, dynamic recrystallization and substructure evolution of a 904 L super austenitic stainless steel[J]. MATERIALS TODAY COMMUNICATIONS,2023,37:11.
APA	Lan, Liangyun,Zhang, Yiting,Fu, Yifeng,Guo, You,&Shi, Quanqiang.(2023).Effect of strain inhomogeneity on flow behavior, dynamic recrystallization and substructure evolution of a 904 L super austenitic stainless steel.MATERIALS TODAY COMMUNICATIONS,37,11.
MLA	Lan, Liangyun,et al."Effect of strain inhomogeneity on flow behavior, dynamic recrystallization and substructure evolution of a 904 L super austenitic stainless steel".MATERIALS TODAY COMMUNICATIONS 37(2023):11.