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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
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume666Pages:305-313
AbstractDuring 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.
description.department[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
KeywordCu-zn Alloy High-cycle Fatigue Fatigue Strength Slip Mode Grain Size
Subject AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51201165, 51331007, 51401207]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75847
Collection中国科学院金属研究所
Corresponding AuthorZhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
Recommended Citation
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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