INFLUENCES OF MICROSTRUCTURE ON FATIGUE CRACK PROPAGATING PATH AND CRACK GROWTH RATES IN TC4ELI ALLOY
文献类型：期刊论文
| 作者 | Ma Yingjie1; Li Jinwei2; Lei Jiafeng1; Tang Zhenyun2; Liu Yuyin1; Yang Rui1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2010-09-11 |
| 卷号 | 46期号:9页码:1086-1092 |
| 关键词 | titanium alloy microstructure crack propagating path crack growth rate |
| ISSN号 | 0412-1961 |
| DOI | 10.3724/SP.J.1037.2010.00155 |
| 通讯作者 | Yang Rui(ryang@imr.ac.cn) |
| 英文摘要 | Long fatigue crack propagating path in TC4ELI alloy with lamellar microstructure was studied by SEM. Statistics of angles between cracking path and alpha lamella exhibits that fatigue crack is apt to parallel alpha lamella or cross alpha lamella vertically, which will induce the ladder shape of crack propagating path. The parallel and vertical propagating patterns were interpreted with the weak alpha/beta interface and the orientation of hcp alpha-Ti unit cell. Analysis of crack propagating path helps to understand the effect of microstructure on fatigue crack growth (FCG) rates. FCG rates tests with different microstructures reveal that in near fatigue crack threshold (Delta K(th)) region the thickness of alpha lamella is the main influential factor on fatigue crack growth rate da/dN, and the da/dN seems impervious to beta grain size. However, in Paris region the FCG rates are both influenced by grain size and lamellar thickness. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000282804800010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/100546]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang Rui |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.AVIC Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma Yingjie,Li Jinwei,Lei Jiafeng,et al. INFLUENCES OF MICROSTRUCTURE ON FATIGUE CRACK PROPAGATING PATH AND CRACK GROWTH RATES IN TC4ELI ALLOY[J]. ACTA METALLURGICA SINICA,2010,46(9):1086-1092. |
| APA | Ma Yingjie,Li Jinwei,Lei Jiafeng,Tang Zhenyun,Liu Yuyin,&Yang Rui.(2010).INFLUENCES OF MICROSTRUCTURE ON FATIGUE CRACK PROPAGATING PATH AND CRACK GROWTH RATES IN TC4ELI ALLOY.ACTA METALLURGICA SINICA,46(9),1086-1092. |
| MLA | Ma Yingjie,et al."INFLUENCES OF MICROSTRUCTURE ON FATIGUE CRACK PROPAGATING PATH AND CRACK GROWTH RATES IN TC4ELI ALLOY".ACTA METALLURGICA SINICA 46.9(2010):1086-1092. |
入库方式： OAI收割
来源：金属研究所
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