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The criteria for microstructure evolution of Cu and Cu-Al alloys induced by cyclic loading
Liu, R.; Zhang, Z. J.; Zhang, Z. F.; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2016-06-01
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
卷号666页码:123-138
摘要The microstructure evolution behaviors and corresponding quantitative rules of polycrystalline pure Cu and Cu-Al alloys under cyclic push-pull loading with rather large strain amplitudes (Delta epsilon/2 = +/- 2%similar to +/- 9.5%) were systematically investigated. Besides common dislocation structures, deformation twins (DTs), shear bands (SBs) and ultra-fine grains (UFGs) were observed for the first time in fatigued specimens with certain composition and strain amplitude. Based on careful observation and brief classification, a distribution diagram of above microstructures at various Al contents and strain amplitudes was summarized. Then, three corresponding criteria were proposed by developing theoretical models of microstructure evolution, to provide critical distributions of dislocation structures, DTs and UFGs. The calculated results display good agreements with the experimental observations. Both the experimental results and the theoretical analyses indicate the existence of general rules that dominate the microstructure evolution behaviors under cyclic loading. The investigation of these rules is of great significance for the further achievements on both the fatigue mechanism and the life prediction. (C) 2016 Elsevier B.V. All rights reserved.
部门归属[liu, r. ; zhang, z. j. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词Cyclic Deformation Stacking Fault Energy Dislocation Structures Deformation Twins Shear Bands Ultrafine Grains
学科领域Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
资助者National Natural Science Foundation of China (NSFC) [51101162, 51201165, 51331007]
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/321006/75846
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
Liu, R.,Zhang, Z. J.,Zhang, Z. F.,et al. The criteria for microstructure evolution of Cu and Cu-Al alloys induced by cyclic loading[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,666:123-138.
APA Liu, R.,Zhang, Z. J.,Zhang, Z. F.,&Zhang, ZF .(2016).The criteria for microstructure evolution of Cu and Cu-Al alloys induced by cyclic loading.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,666,123-138.
MLA Liu, R.,et al."The criteria for microstructure evolution of Cu and Cu-Al alloys induced by cyclic loading".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 666(2016):123-138.
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