Optimizing the fatigue strength of ultrafine-grained Cu-Zn alloys

IMR OpenIR

	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
ISSN	0921-5093
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
WOS记录号	WOS:000377312600037
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
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.