Low-cycle fatigue-cracking mechanisms in fcc crystalline materials
文献类型：期刊论文
| 作者 | P. Zhang ; S. Qu ; Q. Q. Duan ; S. D. Wu ; S. X. Li ; Z. G. Wang ; Z. F. Zhang |
| 刊名 | Philosophical Magazine
 |
| 出版日期 | 2011 |
| 卷号 | 91期号:2页码:237-257 |
| 关键词 | fcc crystals fatigue crack dislocation grain boundary twin boundary slip band shear band deformation band copper single-crystals persistent slip bands perpendicular grain-boundary severe plastic-deformation constant strain amplitude stage-i propagation twin boundaries tensile properties shear bands behavior |
| ISSN号 | 1478-6435 |
| 中文摘要 | The low-cycle fatigue (LCF) cracking behavior in various face-centered-cubic (fcc) crystalline materials, including Cu single crystals, bicrystals and polycrystals, Cu-Al and Cu-Zn alloys, ultrafine-grained (UFG) Al-Cu and Cu-Zn alloys, was systematically investigated and reviewed. In Cu single crystals, fatigue cracking always nucleates along slip bands and deformation bands. The large-angle grain boundary (GB) becomes the preferential site in bicrystals and polycrystals. In addition, fatigue cracking can also nucleate along slip bands and twin boundaries (TBs) in polycrystalline materials. However, shear bands and coarse deformation bands are observed to the preferential sites for fatigue cracking in UFG materials with a large number of GBs. Based on numerous observations on fatigue-cracking behavior, the fatigue-cracking mechanisms along slip bands, GBs, TBs, shear bands and deformation bands were systematically compared and classified into two types, i.e. shear crack and impingement crack. Finally, these fatigue-cracking behaviors are discussed in depth for a better understanding of their physical nature and the transition from intergranular to transgranular cracking in various fcc crystalline materials. These comprehensive results for fatigue damage mechanisms should significantly aid in obtaining the optimum design to further strengthen and toughen metallic materials in practice. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30896]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | P. Zhang,S. Qu,Q. Q. Duan,et al. Low-cycle fatigue-cracking mechanisms in fcc crystalline materials[J]. Philosophical Magazine,2011,91(2):237-257. |
| APA | P. Zhang.,S. Qu.,Q. Q. Duan.,S. D. Wu.,S. X. Li.,...&Z. F. Zhang.(2011).Low-cycle fatigue-cracking mechanisms in fcc crystalline materials.Philosophical Magazine,91(2),237-257. |
| MLA | P. Zhang,et al."Low-cycle fatigue-cracking mechanisms in fcc crystalline materials".Philosophical Magazine 91.2(2011):237-257. |
入库方式： OAI收割
来源：金属研究所
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