Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach

doi:10.1088/1757-899X/1157/1/012068

IMR OpenIR

	Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach
	Chen,S F 1; Zhang,S H 1; Song,H W 1; Lee,M G 2
	2021-06-01
发表期刊	IOP Conference Series: Materials Science and Engineering
ISSN	1757-8981
卷号	1157 期号:1
摘要	Abstract In the thermo-mechanical process of lightweight alloys, such as aluminum alloys, complex microstructure evolutions are inevitably involved via the continuous dynamic recrystallization (CDRX) featured with extensive formation of subgrains followed by progressive transition into new grains. In this study, a novel fully integrated CDRX-VPSC (visco-plastic self-consistent) model is established. First, numerical formulations for formation and rotation of subgrains are addressed by reasonably tackling the grain boundary characteristics, and also the concept of generation for CDRX grains is newly introduced. By considering these two aspects, the grain population is updated according to the complex grain boundary evolutions. In the VPSC module of the integrated modeling, the shear strain rate, dislocation density, and orientation are calculated to update the grain populations and grain sizes in the CDRX module. The validation of the proposed model is conducted by simulating the hot compression of extruded AA7075 sheet, in which the DRX mechanism is controlled by the subgrain related dynamic recovery (DRV) and CDRX. The simulated flow stresses, microstructural evolutions (grains size and DRX fractions), and texture features agree well with reported experimental observations.
DOI	10.1088/1757-899X/1157/1/012068
语种	英语
WOS记录号	IOP:1757-8981-1157-1-012068
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159420
专题	中国科学院金属研究所
作者单位	1.Shi-Changxu Innovation Center of Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 2.Department of Materials Science and Engineering & Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 08826, Republic of Korea
推荐引用方式 GB/T 7714	Chen,S F,Zhang,S H,Song,H W,et al. Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach[J]. IOP Conference Series: Materials Science and Engineering,2021,1157(1).
APA	Chen,S F,Zhang,S H,Song,H W,&Lee,M G.(2021).Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach.IOP Conference Series: Materials Science and Engineering,1157(1).
MLA	Chen,S F,et al."Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach".IOP Conference Series: Materials Science and Engineering 1157.1(2021).