Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach

doi:10.1016/j.ijplas.2020.102710

IMR OpenIR

	Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach
	Chen, S. F.1,2; Li, D. Y.3; Zhang, S. H.4; Han, H. N.1,2; Lee, H. W.5; Lee, M. G.1,2
通讯作者	Lee, M. G.(myounglee@snu.ac.kr)
	2020-08-01
发表期刊	INTERNATIONAL JOURNAL OF PLASTICITY
ISSN	0749-6419
卷号	131 页码:28
摘要	A new physically based fully coupled crystal plasticity-continuous dynamic recrystallization (CDRX) frame work at elevated temperature is proposed. The CDRX model reformulates the subgrain formation and rotation, as well as the associated CDRX grain generation that is followed by constrained growth, in the context of crystal plasticity. The coupled CDRX-VPSC (visco-plastic self-consistent) model employs dislocation density based constitutive laws that represent accumulation and recovery of dislocations in the matrix and recrystallized grains. The validation of the proposed model is conducted by simulating the hot compression of extruded aluminum alloy 7075, in which the DRX mechanism is controlled by the subgrain related dynamic recovery (DRV) and CDRX. The simulated flow stresses and microstructural evolutions including DRX fraction, sub- and DRX grain sizes agree well with reported experimental observations of extruded aluminum alloy 7075. Various case studies can be performed using the proposed modeling approach. For example, the study on the effect of the characteristics of initial subgrain boundary is presented by employing both extruded and cast aluminum alloy 7075, which clarifies that a large amount of subgrain boundaries with high misorientation angles can efficiently promote CDRX. Furthermore, enhanced CDRX can be predicted in the extruded aluminum alloy 7075 when its initial grain size is small, which is also in good consistence with the experimental data.
关键词	Continuous dynamic recrystallization Aluminum alloys Crystal plasticity Dislocation density Subgrain
资助者	NRF of Korea ; KIAT ; NRF of Korea - Ministry of Science and ICT (MSIT) ; National Natural Science Foundation of China
DOI	10.1016/j.ijplas.2020.102710
收录类别	SCI
语种	英语
资助项目	NRF of Korea[2017R1A2A2A05069619] ; KIAT[N0002598] ; NRF of Korea - Ministry of Science and ICT (MSIT)[2018R1A2B6006856] ; National Natural Science Foundation of China[51675331]
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:000553470000007
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：43[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/321006/140028
专题	中国科学院金属研究所
通讯作者	Lee, M. G.
作者单位	1.Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 08826, South Korea 2.Seoul Natl Univ, Res Inst Adv Mat RIAM, Seoul 08826, South Korea 3.Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Korea Inst Mat Sci, Chang Won 51508, South Korea
推荐引用方式 GB/T 7714	Chen, S. F.,Li, D. Y.,Zhang, S. H.,et al. Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2020,131:28.
APA	Chen, S. F.,Li, D. Y.,Zhang, S. H.,Han, H. N.,Lee, H. W.,&Lee, M. G..(2020).Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach.INTERNATIONAL JOURNAL OF PLASTICITY,131,28.
MLA	Chen, S. F.,et al."Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach".INTERNATIONAL JOURNAL OF PLASTICITY 131(2020):28.