Investigation on the Fatigue Crack Propagation of Medium-Entropy Alloys with Heterogeneous Microstructures | |
Liu Y(刘洋)1,2; Jiang P(姜萍)1; Duan GH(段桂花)1; Wang J(王晶)1; Zhou LL(周玲玲)1; Xie JJ(谢季佳)1,2 | |
发表期刊 | MATERIALS |
2022-09-01 | |
卷号 | 15期号:17页码:14 |
摘要 | The behavior and the mechanism of fatigue crack propagation in CrCoNi medium-entropy alloys (MEAs) with heterogeneous microstructures were investigated in this paper. After cold-rolling and recrystallization annealing at different temperatures and times, five sets of heterostructured specimens were acquired with different recrystallization levels. Then, the structure characterizations of these five sets of specimens were carried out by nanoindentation testing and electron back-scatter diffraction (EBSD) mapping. Finally, the fatigue crack propagation tests were conducted on single edge crack specimens of these different heterogeneous microstructures. The experimental results indicate that the crack propagation rates of specimens with partial recrystallization microstructures are higher than those with complete recrystallization microstructures, and the effect on fatigue crack thresholds of these specimens is the opposite. The fatigue cracks grow along the slip planes or twin boundaries in recrystallization grains (RGs), which induced crack deflections and the roughness-induced crack closure effect. For this reason, the area percentage of recrystallization and the grain size of RGs have a great effect on the value of the fatigue crack growth threshold. |
关键词 | heterogeneous microstructure MEA recrystallization annealing fatigue crack propagation threshold fatigue crack growth path cyclic plastic zone |
DOI | 10.3390/ma15176081 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000851842500001 |
关键词[WOS] | HIGH-CYCLE FATIGUE ; NEAR-THRESHOLD FATIGUE ; STAINLESS-STEEL ; STRENGTH ; INITIATION ; DESIGN ; MECHANISM ; BEHAVIOR ; LIFE |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
资助项目 | National Key R&D Program of China[2019YFA 0209900] ; National Key R&D Program of China[2017YFA0204402] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] |
项目资助者 | National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
论文分区 | 二类/Q1 |
力学所作者排名 | 1 |
RpAuthor | Xie, Jijia |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/90029 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Xie JJ(谢季佳) |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Liu Y,Jiang P,Duan GH,et al. Investigation on the Fatigue Crack Propagation of Medium-Entropy Alloys with Heterogeneous Microstructures[J]. MATERIALS,2022,15,17,:14. |
APA | Liu Y,Jiang P,Duan GH,Wang J,Zhou LL,&Xie JJ.(2022).Investigation on the Fatigue Crack Propagation of Medium-Entropy Alloys with Heterogeneous Microstructures.MATERIALS,15(17),14. |
MLA | Liu Y,et al."Investigation on the Fatigue Crack Propagation of Medium-Entropy Alloys with Heterogeneous Microstructures".MATERIALS 15.17(2022):14. |
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