Strain distribution and lattice rotations during in-situ tension of aluminum with a transmodal grain structure

doi:10.1016/j.msea.2021.142010

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Strain distribution and lattice rotations during in-situ tension of aluminum with a transmodal grain structure
	Gao, W. Q.4; Zhang, C. L.4; 杨沐鑫.3; Zhang, S. Q.2,4; Jensen, D. Juul 1; Godfrey, A.4
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-11-02
卷号	828 页码:11
关键词	Heterogenous grain structure Strain distribution High-resolution digital image correlation (HR-DIC) Near-micrometer grain size Electron backscatter diffraction (EBSD)
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.142010
通讯作者	Godfrey, A.(awgodfrey@mail.tsinghua.edu.cn)
英文摘要	Samples of aluminum were prepared using spark plasma sintering from a mixture of coarse (average particle size of 6 mu m) and fine (average particle size of 1 mu m) powders to achieve a heterogeneous transmodal grain size distribution covering a range of grain sizes from approximate to 1 to 10 mu m. By careful choice of surface markers both electron back-scatter diffraction (EBSD) data, to track crystal rotations, and digital image correlation (DIC) data, to track local plastic deformation, were collected from the same region during in-situ tensile deformation up to a strain of epsilon t = 0.126. A heterogeneous pattern of crystal rotation is observed for all grain sizes, although in some smaller grains (defined as those <4 mu m diameter) no clear grain sub-division was identified. Plastic strain was more concentrated in the larger grains, but the average rotation rate of the smaller grains was found to be higher than that of larger grains, showing also a much wider spread in rotation rate. Based on the change in average orientation, a clear orientation dependence in the tensile axis rotation direction was observed for many larger grains, in agreement with previously reported data for aluminum with average grain size of 75 mu m, whereas the smaller grains showed a more complex rotation behavior, with more of these grains showing unexpected tensile axis rotations. The combination of both EBSD and DIC during in-situ experiments provides a rich data set for analysis of plastic deformation in samples with a heterogeneous microstructure.
分类号	一类
资助项目	National Key Research and Development Program of China[2016YFB0700403] ; National Natural Science Foundation of China[52071326] ; National Natural Science Foundation of China[51671113] ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme[788567]
WOS关键词	AL-MG ALLOY ; HIGH-STRENGTH ; SIZE ; DEFORMATION ; DUCTILITY ; MICROSTRUCTURE ; STEEL ; FINE ; BOUNDARIES ; EVOLUTION
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000696722200002
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme
其他责任者	Godfrey, A.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87420]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark 2.Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat MOE, Beijing 100084, Peoples R China;
推荐引用方式 GB/T 7714	Gao, W. Q.,Zhang, C. L.,杨沐鑫.,et al. Strain distribution and lattice rotations during in-situ tension of aluminum with a transmodal grain structure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,828:11.
APA	Gao, W. Q.,Zhang, C. L.,杨沐鑫.,Zhang, S. Q.,Jensen, D. Juul,&Godfrey, A..(2021).Strain distribution and lattice rotations during in-situ tension of aluminum with a transmodal grain structure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,828,11.
MLA	Gao, W. Q.,et al."Strain distribution and lattice rotations during in-situ tension of aluminum with a transmodal grain structure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 828(2021):11.