中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Microstructure refinement and grain size distribution in crack initiation region of very-high-cycle fatigue regime for high-strength alloys

文献类型:期刊论文

作者Chang YK(常玉坤)1,3; Pan XN(潘向南)2,3; Zheng L1; Hong YS(洪友士)2,3
刊名INTERNATIONAL JOURNAL OF FATIGUE
出版日期2020-05-01
卷号134页码:12
ISSN号0142-1123
关键词Very-high-cycle fatigue Crack initiation Fine granular area (FGA) Rough area (RA) High-strength alloys
DOI10.1016/j.ijfatigue.2020.105473
英文摘要

The microstructural features underneath the fracture surfaces of high-strength alloys experienced very-high-cycle fatigue were further investigated to show the nanograin layer in crack initiation regions under negative stress ratios due to numerous cyclic pressing (NCP) mechanism. The grain size and the thickness of nanograin layer in fine granular area of high-strength steels and rough area of titanium alloys were measured. A normalized quantity d* was proposed to characterize the distribution of the nanograin size. A new schematic to express NCP process was depicted to describe the contacting actions between crack surfaces, which causes the microstructure refinement of the high-strength alloys.

分类号一类
WOS关键词TITANIUM-ALLOY ; FORMATION MECHANISM ; METALLIC MATERIALS ; STRESS RATIO ; EARLY GROWTH ; BEHAVIOR ; TI-6AL-4V ; STEEL ; LIFE ; PROPAGATION
资助项目National Natural Science Foundation of China[11932020] ; National Natural Science Foundation of China[11572325] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020201]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:000518708500046
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者洪友士
源URL[http://dspace.imech.ac.cn/handle/311007/81774]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Zheng L; Hong YS(洪友士)
作者单位1.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Chang YK,Pan XN,Zheng L,et al. Microstructure refinement and grain size distribution in crack initiation region of very-high-cycle fatigue regime for high-strength alloys[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,134:12.
APA Chang YK,Pan XN,Zheng L,&Hong YS.(2020).Microstructure refinement and grain size distribution in crack initiation region of very-high-cycle fatigue regime for high-strength alloys.INTERNATIONAL JOURNAL OF FATIGUE,134,12.
MLA Chang YK,et al."Microstructure refinement and grain size distribution in crack initiation region of very-high-cycle fatigue regime for high-strength alloys".INTERNATIONAL JOURNAL OF FATIGUE 134(2020):12.

入库方式: OAI收割

来源:力学研究所

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