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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
Source Publication36TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE
ISSN1757-8981
Volume89Pages:-
AbstractA 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.
description.department[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
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74971
Collection中国科学院金属研究所
Corresponding Authorllu@imr.ac.cn
Recommended Citation
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):-.
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