Microstructure refinement and grain size distribution in crack initiation region of very-high-cycle fatigue regime for high-strength alloys | |
Chang YK(常玉坤)1,3; Pan XN(潘向南)1,2; Zheng L3; Hong YS(洪友士)1,2 | |
Source Publication | INTERNATIONAL JOURNAL OF FATIGUE |
2020-05-01 | |
Volume | 134Pages:12 |
ISSN | 0142-1123 |
Abstract | 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. |
Keyword | Very-high-cycle fatigue Crack initiation Fine granular area (FGA) Rough area (RA) High-strength alloys |
DOI | 10.1016/j.ijfatigue.2020.105473 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000518708500046 |
WOS Keyword | TITANIUM-ALLOY ; FORMATION MECHANISM ; METALLIC MATERIALS ; STRESS RATIO ; EARLY GROWTH ; BEHAVIOR ; TI-6AL-4V ; STEEL ; LIFE ; PROPAGATION |
WOS Research Area | Engineering ; Materials Science |
WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
Funding Project | 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] |
Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
Classification | 一类 |
Ranking | 1 |
Contributor | 洪友士 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/81775 |
Collection | 非线性力学国家重点实验室 |
Corresponding Author | Zheng L; Hong YS(洪友士) |
Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China |
Recommended Citation 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. |
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