Effects of pre-compression on the stress rupture properties of Ni base single crystal superalloy DD98 and its mechanism
文献类型：期刊论文
| 作者 | Liu Jinlai; Jin Tao; Sun Xiaofeng; Zhang Jinghua; Guan Hengrong; Hu Zhuangqi |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2006-08-01 |
| 卷号 | 42期号:8页码:843-849 |
| 关键词 | Ni base single crystal superalloy pre-compression stress rupture rafting dislocation |
| ISSN号 | 0412-1961 |
| 通讯作者 | Liu Jinlai(jlliu@imr.ac.cn) |
| 英文摘要 | The effects of uniaxial pre-compressions in vacuum at 1050 degrees C by 180 MPa/6 h and 220 MPa/6 h on the microstructure and stress rupture properties of single crystal superalloy DD98 were investigated. It is shown that P-type gamma' raft parallel to stress formed during pre-compression. Moreover, dislocation networks appeared on gamma/gamma' interface in vertical channels. The effect on stress rupture lifetime varied with the test conditions, but the pre-compression increased the elongations under all test conditions. Under high-temperature and low-stress, the pre-compression made P-type raft transform into wave-like N-type raft with different widths in two samples, and dislocations overpass gamma' particles by different means. Under low-temperature and high-stress the P-type raft showed only a slight tendency to transform into N-type one, and the entangled dislocations appeared in two precompressed samples after stress rupture. Under intermediate temperature and stress, the P-type raft can still transform into N-type one but very irregular, and the dislocations formed irregular networks. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000240294200012 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/87955]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu Jinlai |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Jinlai,Jin Tao,Sun Xiaofeng,et al. Effects of pre-compression on the stress rupture properties of Ni base single crystal superalloy DD98 and its mechanism[J]. ACTA METALLURGICA SINICA,2006,42(8):843-849. |
| APA | Liu Jinlai,Jin Tao,Sun Xiaofeng,Zhang Jinghua,Guan Hengrong,&Hu Zhuangqi.(2006).Effects of pre-compression on the stress rupture properties of Ni base single crystal superalloy DD98 and its mechanism.ACTA METALLURGICA SINICA,42(8),843-849. |
| MLA | Liu Jinlai,et al."Effects of pre-compression on the stress rupture properties of Ni base single crystal superalloy DD98 and its mechanism".ACTA METALLURGICA SINICA 42.8(2006):843-849. |
入库方式： OAI收割
来源：金属研究所
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