Comparison of fatigue lives between grain boundaries and component single crystals of copper bicrystals
文献类型：期刊论文
| 作者 | Z. F. Zhang ; Z. G. Wang |
| 刊名 | Zeitschrift Fur Metallkunde
 |
| 出版日期 | 2002 |
| 卷号 | 93期号:12页码:1188-1193 |
| 关键词 | bicrystals grain boundaries persistent slip bands fatigue life fatigue cracking fractography cyclic deformation-behavior electron channeling contrast crack initiation intergranular cracking metals bands |
| ISSN号 | 0044-3093 |
| 中文摘要 | Fatigue lives of grain boundaries (GBs) and component crystals were measured by using [123]/[335] and [5 9 13]/ [579] Cu bicrystals with a perpendicular GB at room temperature in air. The results show that the GBs were always the preferential sites for fatigue crack initiation and propagation in the two groups of bicrystals under cyclic tension-tension loading as well as push-pull straining control. When an [123]/[335] bicrystal with reduced section area was tested by cyclic tension-tension loading, the [335] component crystal always had a relatively higher fatigue life than the [123] component crystal. As a result, the fatigue life increased in the order of GB, [123] and [335] component crystals. When the two groups of bicrystals were subjected to cyclic push-pull straining, the GB of the [5 9 13]/[579] bicrystal showed a higher fatigue life than that of the [123]/[335] bicrystal, which was suggested to be partially attributed to the difference in the component crystal orientations in the two bicrystals. By using scanning electron microscopy and electron channeling contrast techniques, the fatigue damage features on the surfaces and fatigue fractography were examined. Based on the present results, the fatigue cracking mechanisms along GBs and persistent slip bands in Cu bicrystals are discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36558]  |
| 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 | Z. F. Zhang,Z. G. Wang. Comparison of fatigue lives between grain boundaries and component single crystals of copper bicrystals[J]. Zeitschrift Fur Metallkunde,2002,93(12):1188-1193. |
| APA | Z. F. Zhang,&Z. G. Wang.(2002).Comparison of fatigue lives between grain boundaries and component single crystals of copper bicrystals.Zeitschrift Fur Metallkunde,93(12),1188-1193. |
| MLA | Z. F. Zhang,et al."Comparison of fatigue lives between grain boundaries and component single crystals of copper bicrystals".Zeitschrift Fur Metallkunde 93.12(2002):1188-1193. |
入库方式： OAI收割
来源：金属研究所
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