Plastic anisotropy and twin distributions near the fatigue crack tip of textured Mg alloys from in situ synchrotron X-ray diffraction measurements and multiscale mechanics modeling
文献类型：期刊论文
| 作者 | Xie, Di4; Zhang, Wei4; Lyu, Zongyang4; Liaw, Peter K.4; Tran, Huy3; Chew, Huck Beng3; Wei, Yujie2 ; Ren, Yang1; Gao, Yanfei4; Wei YJ(魏宇杰)
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| 刊名 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
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| 出版日期 | 2022-08-01 |
| 卷号 | 165页码:26 |
| ISSN号 | 0022-5096 |
| 关键词 | In situ synchrotron X-ray diffraction (S-XRD) Mg alloy Fatigue crack Cohesive interface model Crystal plasticity finite element method |
| DOI | 10.1016/j.jmps.2022.104936 |
| 通讯作者 | Gao, Yanfei(ygao7@utk.edu) |
| 英文摘要 | In spite of many potential applications due to their superior mechanical properties, magnesium alloys still find many practical restrictions primarily due to our limited knowledge of their failure mechanisms. In situ and non-destructive strain measurements on the microstructural scales are critical in understanding the fatigue crack behavior, which has greater advantages than the macroscopic measurements based on replica technique and the small-scale mechanical testing that cannot easily provide a complete view on the synergy of many scale-dependent deformation and failure mechanisms. This work exploits the state-of-the-art synchrotron X-ray diffraction technique to attain in situ strain mapping results, with high spatial resolution, near a fatigue crack tip in the highly textured ZK60 Mg alloy. The accurate measurements in the plastic zone are compared to a micromechanical modeling framework, in which the steady fatigue crack is simulated by an irreversible, hysteretic cohesive interface model and the surrounding plasticity by Hill anisotropic plasticity. The general agreement in the anisotropic deformation fields is reached down to half of the plastic zone size towards the crack tip, while the discrepancy right at the crack tip can be used to develop an inverse model to extract the material-specific fatigue damage evolution in our future work. It is surprisingly noted that twin activities are localized in a narrow band from the tip to the wake of the fatigue crack, irrespective of the crack growth direction of this textured alloy. Such twin-crack interactions are understood here by our crystal plasticity finite element simulations with several representative crystallographic orientations. |
| WOS关键词 | WROUGHT MAGNESIUM ALLOY ; FINITE-ELEMENT SIMULATIONS ; COHESIVE-ZONE LAWS ; CYCLIC DEFORMATION ; DETWINNING BEHAVIOR ; NEUTRON-DIFFRACTION ; FRACTURE-BEHAVIOR ; FIELD PROJECTION ; VOID GROWTH ; PROPAGATION |
| 资助项目 | US National Science Foundation[1809640] ; US National Science Foundation[1809696] ; Center for Materials Processing at the University of Tennessee ; DOE Office of Science by Argonne National Laboratory[DE-AC02-06CH11357] |
| WOS研究方向 | Materials Science ; Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000807432700001 |
| 资助机构 | US National Science Foundation ; Center for Materials Processing at the University of Tennessee ; DOE Office of Science by Argonne National Laboratory |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89642]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Gao, Yanfei |
| 作者单位 | 1.City Univ Hong Kong, Dept Phys, Kwoloon, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 3.Univ Illinois, Dept Aerosp Engn, Urbana, IL 61801 USA 4.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA |
| 推荐引用方式 GB/T 7714 | Xie, Di,Zhang, Wei,Lyu, Zongyang,et al. Plastic anisotropy and twin distributions near the fatigue crack tip of textured Mg alloys from in situ synchrotron X-ray diffraction measurements and multiscale mechanics modeling[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2022,165:26. |
| APA | Xie, Di.,Zhang, Wei.,Lyu, Zongyang.,Liaw, Peter K..,Tran, Huy.,...&魏宇杰.(2022).Plastic anisotropy and twin distributions near the fatigue crack tip of textured Mg alloys from in situ synchrotron X-ray diffraction measurements and multiscale mechanics modeling.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,165,26. |
| MLA | Xie, Di,et al."Plastic anisotropy and twin distributions near the fatigue crack tip of textured Mg alloys from in situ synchrotron X-ray diffraction measurements and multiscale mechanics modeling".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 165(2022):26. |
入库方式： OAI收割
来源：力学研究所
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