Modeling the Dynamic Recrystallization of Mg-11Gd-4Y-2Zn-0.4Zr Alloy Considering Non-uniform Deformation and LPSO Kinking During Hot Compression

doi:10.1007/s40195-019-00898-z

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	Modeling the Dynamic Recrystallization of Mg-11Gd-4Y-2Zn-0.4Zr Alloy Considering Non-uniform Deformation and LPSO Kinking During Hot Compression
	Zhang, Hong-Xuan 1,2; Chen, Shuai-Feng 1; Cheng, Ming 1; Zheng, Ce 1,3; Zhang, Shi-Hong 1
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2019-09-01
卷号	32 期号:9 页码:1122-1134
关键词	Mg-11Gd-4Y-2Zn-0 4Zr alloy Modeling Dynamic recrystallization Non-uniform strain LPSO kinking
ISSN号	1006-7191
DOI	10.1007/s40195-019-00898-z
通讯作者	Chen, Shuai-Feng(mcheng@imr.ac.cn)
英文摘要	Hot compression tests of Mg-11Gd-4Y-2Zn-0.4Zr alloy (GWZK114) were conducted at a deformation temperature range of 300-500 degrees C and a strain rate range of 0.01-10.0s(-1). Based on systematic microstructure observation, it is confirmed that long period stacking ordered (LPSO) phase displays essential and evolving roles on the dynamic recrystallization (DRX) behavior. The results indicate that the plastic deformation is mainly coordinated by simultaneous exist of LPSO kinking of lamella 14H-LPSO phase and DRX at 350-450 degrees C, and DRX at 500 degrees C. Further, it is found that the LPSO kinking induced during 350-450 degrees C can delay the DRX. A phenomenological DRX model of GWZK114 alloy is established to be XDRX=1-exp[-0.5(epsilon-epsilon c epsilon)0.91]. Non-uniform distribution of plastic strain during compression was considered via finite element method and it ensures a good prediction of DRX fraction under a large plastic strain. Meanwhile, an enhanced DRX model, taking its formulation as XDRX={1-exp[-0.5(epsilon-epsilon c epsilon)0.91]}(T226.8-1)n, n=3.82 epsilon(0.083), is proposed for the first time to capture the hindering effect of 14H-LPSO kinking on DRX behavior. The predicted results of this enhanced DRX model agree well with the experimental cases, where 14H-LPSO kinking is dominated or partially involved (300-450 degrees C). Besides, a size model of DRX grains is also established and can depict the evolution of DRX grain size for all the investigated compression conditions with accounting for temperature rising at high strain rates (5s(-1) and 10s(-1)).
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000477005900007
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134592]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Shuai-Feng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hong-Xuan,Chen, Shuai-Feng,Cheng, Ming,et al. Modeling the Dynamic Recrystallization of Mg-11Gd-4Y-2Zn-0.4Zr Alloy Considering Non-uniform Deformation and LPSO Kinking During Hot Compression[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(9):1122-1134.
APA	Zhang, Hong-Xuan,Chen, Shuai-Feng,Cheng, Ming,Zheng, Ce,&Zhang, Shi-Hong.(2019).Modeling the Dynamic Recrystallization of Mg-11Gd-4Y-2Zn-0.4Zr Alloy Considering Non-uniform Deformation and LPSO Kinking During Hot Compression.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(9),1122-1134.
MLA	Zhang, Hong-Xuan,et al."Modeling the Dynamic Recrystallization of Mg-11Gd-4Y-2Zn-0.4Zr Alloy Considering Non-uniform Deformation and LPSO Kinking During Hot Compression".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.9(2019):1122-1134.