ANISOTROPY OF YIELDING/HARDENING AND MICRO-INHOMOGENEITY OF DEFORMING/ROTATING FOR A POLYCRYSTALLINE METAL UNDER CYCLIC TENSION COMPRESSION

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	ANISOTROPY OF YIELDING/HARDENING AND MICRO-INHOMOGENEITY OF DEFORMING/ROTATING FOR A POLYCRYSTALLINE METAL UNDER CYCLIC TENSION COMPRESSION
其他题名	ANISOTROPY OF YIELDING/HARDENING AND MICRO-INHOMOGENEITY OF DEFORMING/ROTATING FOR A POLYCRYSTALLINE METAL UNDER CYCLIC TENSION- COMPRESSION
	Zhang Keshi 1; Shi Yanke 1; Xu Lingbo 1; Yu Duokui 2
	2011
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:10 页码:1292-1300
摘要	The mesoscopic analyses at a grain level are carried out for a pure copper under symmetrical strain cyclic loading. The Voronoi crystal aggregation which consists of a number of randomly arranged crystal grains is adopted in the analysis as a RVE (representative volume element) of a metal material, and a crystalline plastic model is applied to describe the grain's mesoscopic constitutive relationship, by which the mesoscopic plastic slipping in anisotropic grain follows the nonlinear kinematic hardening law. Through numerical simulation it is confirmed that the present method can be applied to simulate the hysteresis for a polycrystalline material under cycle loading of different strain amplitudes, and it can be used to estimate the subsequent yield surface shape and its curvature change of the material in the cycle loading process, which are relative with the preloading direction. According to statistical analysis, it is found that the coefficient of variation (COV) for internal axial strain in the macro tension direction of the polycrystalline RYE considerably increases with the cyclic number in the symmetrical strain cycle loading, and the statistical lattice rotating of the material increases with loading cycle number. These results indicate that the internal material's microstructure will tend to heterogeneity, since the coefficients of variation for the inhornogeneous strain and rotation angle increase with the cyclic number.
关键词	SUBSEQUENT YIELD SURFACE CONSTITUTIVE THEORIES PLASTICITY STRAIN MODELS COPPER cyclic plasticity slipping anisotropic yielding and hardening inhomogeneous deformation
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Science Foundation of Guangxi University] ; [Guangxi Science and Technology Lab Center]
CSCD记录号	CSCD:4378657
引用统计	被引频次：4[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/142601
专题	中国科学院金属研究所
作者单位	1.广西大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Zhang Keshi,Shi Yanke,Xu Lingbo,et al. ANISOTROPY OF YIELDING/HARDENING AND MICRO-INHOMOGENEITY OF DEFORMING/ROTATING FOR A POLYCRYSTALLINE METAL UNDER CYCLIC TENSION COMPRESSION[J]. ACTA METALLURGICA SINICA,2011,47(10):1292-1300.
APA	Zhang Keshi,Shi Yanke,Xu Lingbo,&Yu Duokui.(2011).ANISOTROPY OF YIELDING/HARDENING AND MICRO-INHOMOGENEITY OF DEFORMING/ROTATING FOR A POLYCRYSTALLINE METAL UNDER CYCLIC TENSION COMPRESSION.ACTA METALLURGICA SINICA,47(10),1292-1300.
MLA	Zhang Keshi,et al."ANISOTROPY OF YIELDING/HARDENING AND MICRO-INHOMOGENEITY OF DEFORMING/ROTATING FOR A POLYCRYSTALLINE METAL UNDER CYCLIC TENSION COMPRESSION".ACTA METALLURGICA SINICA 47.10(2011):1292-1300.