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Cyclic softening behaviors of ultra-fine grained Cu-Zn alloys
Zhang, ZJ; Zhang, P; Zhang, ZF; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2016-12-01
发表期刊ACTA MATERIALIA
ISSN1359-6454
卷号121页码:331-342
摘要Low-cycle fatigue tests were carried out on ultra-fine grained (UFG) Cu and Cu-Zn alloys to reveal the mechanisms of cyclic softening and the effects of dislocation slip mode. Based on careful examinations of the grain coarsening (GC), shear band (SB) evolutions and surface hardness change during cyclic deformation, the microscopic mechanisms of the cyclic softening process and the correlations between GC and SBs were deeply revealed. Besides, a general and coincident relationship was found between the softening velocities and the fatigue lives for UFG Cu and Cu alloys. Finally, it is approved that through alloying to increase the slip planarity, the cyclic softening caused by GC and SBs can be largely restrained such that the fatigue life may be improved effectively. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属[zhang, z. j. ; zhang, p. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词Cu-zn Alloy Ultra-fine Grain Low-cycle Fatigue Shear Bands Dislocation Slip Mode
学科领域Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者National Natural Science Foundation of China (NSFC) [51201165, 51331007, 51401207]
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/321006/76169
专题中国科学院金属研究所
通讯作者Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Zhang, ZJ,Zhang, P,Zhang, ZF,et al. Cyclic softening behaviors of ultra-fine grained Cu-Zn alloys[J]. ACTA MATERIALIA,2016,121:331-342.
APA Zhang, ZJ,Zhang, P,Zhang, ZF,&Zhang, ZF .(2016).Cyclic softening behaviors of ultra-fine grained Cu-Zn alloys.ACTA MATERIALIA,121,331-342.
MLA Zhang, ZJ,et al."Cyclic softening behaviors of ultra-fine grained Cu-Zn alloys".ACTA MATERIALIA 121(2016):331-342.
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