RESEARCH PROCESS ON MICROSTRUCTURAL STABILITY AND MECHANICAL BEHAVIOR OF ADVANCED Ni-BASED SINGLE CRYSTAL SUPERALLOYS
文献类型：期刊论文
| 作者 | Jin Tao; Zhou Yizhou; Wang Xinguang; Liu Jinlai; Sun Xiaofeng; Hu Zhuangqi |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2015-10-11 |
| 卷号 | 51期号:10页码:1153-1162 |
| 关键词 | Ni-based single crystal superalloy microstructural stability mechanical behavior |
| ISSN号 | 0412-1961 |
| 通讯作者 | Jin Tao(tjin@imr.ac.cn) |
| 英文摘要 | Ni-based single crystal superalloys have been widely used to produce turbine blades for advanced aero-engines because of the super temperature-related microstructural stability and comprehensive mechanical properties. However, due to effects of the high temperature and complicated stresses in service, the microstructures of superalloys might gradually evolve and fail in different modes. The present paper reviews the progress of microstructural stability and mechanical behavior including the gamma ' phase rafting, TCP phase precipitation, high temperature creep, low cycle fatigue and thermomechanical fatigue of single crystal superalloys. The addition of Ru improves the creep life of superalloys, but also indirectly promotes the occurrence of "topological inversion". On the other hand, with the increase of aging temperature and time, the contents of refractory elements in mu phase rise significantly. With the increase of applied tension stress, more mu phase precipitate from the gamma matrix, whereas inverse tendency is shown under compression stress. Numerous planar defects are formed during precipitation of mu phase, and these defects promote the nucleation of P and R phases. During high temperature and low stress creep, an important dislocation a < 010 > superdislocation is observed, which moves in the gamma ' phase slowly by a combination of slide and climb. Under very high temperature, incubation with accelerating creep rate occurs before the primary stage, which relates to the extending process of the gamma width. At last, the stacking fault energy is significantly reduced after Ru additions, and thus a series of complex deformation mechanisms occur during low cycle fatigue, e.g. stacking faults penetrating gamma/gamma ' interface, trailing a/6 < 112 > Shockley dislocations shearing into the gamma ' phase. During thermomechanical fatigue, the life of superalloys is influenced by the site of crack initiation, microstructural evolution and oxidation resistance. |
| 资助项目 | High Technology Research and Development Program of China[2014AA-041701] ; National Natural Science Foundation of China[51331005] ; National Natural Science Foundation of China[11332010] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000363997600001 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | High Technology Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/121041]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Jin Tao |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin Tao,Zhou Yizhou,Wang Xinguang,et al. RESEARCH PROCESS ON MICROSTRUCTURAL STABILITY AND MECHANICAL BEHAVIOR OF ADVANCED Ni-BASED SINGLE CRYSTAL SUPERALLOYS[J]. ACTA METALLURGICA SINICA,2015,51(10):1153-1162. |
| APA | Jin Tao,Zhou Yizhou,Wang Xinguang,Liu Jinlai,Sun Xiaofeng,&Hu Zhuangqi.(2015).RESEARCH PROCESS ON MICROSTRUCTURAL STABILITY AND MECHANICAL BEHAVIOR OF ADVANCED Ni-BASED SINGLE CRYSTAL SUPERALLOYS.ACTA METALLURGICA SINICA,51(10),1153-1162. |
| MLA | Jin Tao,et al."RESEARCH PROCESS ON MICROSTRUCTURAL STABILITY AND MECHANICAL BEHAVIOR OF ADVANCED Ni-BASED SINGLE CRYSTAL SUPERALLOYS".ACTA METALLURGICA SINICA 51.10(2015):1153-1162. |
入库方式： OAI收割
来源：金属研究所
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