Ultra-high cycle fatigue behavior of the as-extruded magnesium alloy ZK60
文献类型：期刊论文
| 作者 | Xu Daokui; Liu Lu; Xu Yongbo; Han Enhou |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 43期号:2页码:144-148 |
| 关键词 | Mg alloy ultra-high cycle fatigue non-metallic inclusion fatigue strength |
| ISSN号 | 0412-1961 |
| 通讯作者 | Han Enhou(ehhan@imr.ac.cn) |
| 英文摘要 | The experiments of the fatigue behavior of the as-extruded Mg alloy ZK60 in a regime of 10(6)-10(9) cyc revealed that a plateau exists in the regime of 5 x 10(6)-10(8) cyc, whereas the fatigue strength gradually decreases in the regime of 10(8)-10(9) cyc, and the fatigue strength corresponding to 10(9) cyc is (90 +/- 5) MPa. SEM observation indicated that the fatigue crack mostly initiated at the surface or subsurface for the samples failed in the regime of 5 x 10(6)-10(8) cyc, and at the internal non-metallic inclusion for the samples failed between 10(8) and 10(9) cyc. Through determining the size of the fatigue crack initiation area, the fatigue strength of the alloy is estimated, which is basically consistent with the experimental results. Analysis of fractographs indicated that the formation of the fatigue crack initiation area is caused by the crack initiation at several inclusions and subsequent crack coalescence. Therefore, the fatigue strength seems not to be determined by the maximum inclusion, but by the " defect area " consisting of several inclusions. According to determination of the sizes of " defect areas " at different locations, the fatigue strength of the alloy can be effectively evaluated. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000245188600006 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/89295]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Han Enhou |
| 作者单位 | 1.Chinese Acad Sci, Environm Corros Ctr, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu Daokui,Liu Lu,Xu Yongbo,et al. Ultra-high cycle fatigue behavior of the as-extruded magnesium alloy ZK60[J]. ACTA METALLURGICA SINICA,2007,43(2):144-148. |
| APA | Xu Daokui,Liu Lu,Xu Yongbo,&Han Enhou.(2007).Ultra-high cycle fatigue behavior of the as-extruded magnesium alloy ZK60.ACTA METALLURGICA SINICA,43(2),144-148. |
| MLA | Xu Daokui,et al."Ultra-high cycle fatigue behavior of the as-extruded magnesium alloy ZK60".ACTA METALLURGICA SINICA 43.2(2007):144-148. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。