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Optimizing the fatigue strength of ultrafine-grained Cu-Zn alloys
Zhang, Z. J.; Pang, J. C.; 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:305-313
摘要During grain refinement, fatigue strength usually does not increase always simultaneously with tensile strength for a certain material. To optimize the fatigue strength of ultrafine-grained (UFG) materials, systematic studies were carried out on the high-cycle fatigue behaviors of UFG Cu and Cu-Zn alloys. It is found that as the grain size decreases, although the fatigue strength coefficient (sigma'(f)) rises synchronously with tensile strength, the fatigue strength exponent (b) decreases continuously, which suppresses the improvement of fatigue strength. Nevertheless, by proper alloying to increase the planarity of dislocation slip, both the two parameters can be improved simultaneously. The increase of sigma'(f) can be owing to the much refined grain size and that in b should be ascribed to the improved slip reversibility and deformation homogeneity. Therefore, the fatigue strength of the UFG materials can be optimized by coordinating the microstructural approach (grain refinement) and the chemical approach (alloying). (C) 2016 Elsevier B.V. All rights reserved.
部门归属[zhang, z. j. ; pang, j. c. ; 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 High-cycle Fatigue Fatigue Strength Slip Mode Grain Size
学科领域Science & Technology - Other Topics ; Materials Science ; 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/321006/75847
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, Z. J.,Pang, J. C.,Zhang, Z. F.,et al. Optimizing the fatigue strength of ultrafine-grained Cu-Zn alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,666:305-313.
APA Zhang, Z. J.,Pang, J. C.,Zhang, Z. F.,&Zhang, ZF .(2016).Optimizing the fatigue strength of ultrafine-grained Cu-Zn alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,666,305-313.
MLA Zhang, Z. J.,et al."Optimizing the fatigue strength of ultrafine-grained Cu-Zn alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 666(2016):305-313.
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