Microstructural evolutions and stability of gradient nano-grained copper under tensile tests and subsequent storage

IMR OpenIR

	Microstructural evolutions and stability of gradient nano-grained copper under tensile tests and subsequent storage
	Chen, W.; You, Z. S.; Tao, N. R.; Lu, L.; llu@imr.ac.cn
	2015
发表期刊	36TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE
ISSN	1757-8981
卷号	89 页码:-
摘要	A gradient nano-grained (GNG) surface layer is produced on a bulk coarse-grained Cu by means of a surface mechanical grinding treatment. Homogeneous grain coarsening induced by mechanical deformation is observed in the GNG Cu layer under tensile tests at both 300 K and 123 K. The concurrent grain coarsening during tensile deformation is proven to be also thermally activated, because the extent of grain coarsening of the GNG Cu layer is less significant at 123 K than at 300 K, although a higher flow stress is achieved at 123 K. During the subsequent storage at 258 K after tensile tests, no obvious change can be found for the grain size in the GNG Cu layer deformed at 300 K. In contrast, widespread abnormal grain coarsening is frequently observed in the GNG Cu layer deformed at 123 K and stored for 100 days, which may be caused by the higher stored energy in the non-equilibrium grain boundary structures.
部门归属	[chen, w. ; you, z. s. ; tao, n. r. ; lu, l.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [you, z. s.] nanjing univ sci & technol, herbert gleiter inst nanosci, nanjing 210094, jiangsu, peoples r china
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74971
专题	中国科学院金属研究所
通讯作者	llu@imr.ac.cn
推荐引用方式 GB/T 7714	Chen, W.,You, Z. S.,Tao, N. R.,et al. Microstructural evolutions and stability of gradient nano-grained copper under tensile tests and subsequent storage[J]. 36TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE,2015,89:-.
APA	Chen, W.,You, Z. S.,Tao, N. R.,Lu, L.,&llu@imr.ac.cn.(2015).Microstructural evolutions and stability of gradient nano-grained copper under tensile tests and subsequent storage.36TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE,89,-.
MLA	Chen, W.,et al."Microstructural evolutions and stability of gradient nano-grained copper under tensile tests and subsequent storage".36TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE 89(2015):-.