Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys
文献类型：期刊论文
| 作者 | Qu, Shasha2,4; Li, Yingju4; Tong, Min4; Wang, Cuiping1,3; Yang, Yuansheng4 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2021-08-17 |
| 卷号 | 823页码:11 |
| ISSN号 | 0921-5093 |
| 关键词 | CoNi-Base superalloy Microstructural evolution Coarsening kinetics Compression deformation Dislocation structure |
| DOI | 10.1016/j.msea.2021.141776 |
| 通讯作者 | Li, Yingju(yjli@imr.ac.cn) ; Yang, Yuansheng(ysyang@imr.ac.cn) |
| 英文摘要 | The coarsening behavior of the gamma' precipitates and compression deformation mechanism of the gamma'-strengthened CoNi-base superalloys are investigated. By substituting 1 at.% Ta for 1 at.% W, the 4W2Ta alloy exhibits a higher gamma' solvus temperature of 1218 degrees C and a lower mass density of 8.93 g/cm3. During the aging process from 900 to 1000 degrees C, both of the 5W1Ta and 4W2Ta alloys show stable gamma/gamma' two-phase microstructure. The coarsening behavior of the gamma' precipitates in the two alloys follows the classical Lifshitz-Slyozov-Wagner (LSW) model. The coarsening rate constant of the 4W2Ta alloy is approximately two times lower than that of the 5W1Ta alloy, which is attributed to its larger lattice mismatch due to the addition of Ta. Besides, compared with the 5W1Ta alloy, the 4W2Ta alloy has higher high-temperature strength and shows different deformation behavior. When the deformation temperature is lower than 800 degrees C, pairs of dislocations shear the gamma' precipitates and gamma matrix. At 800 degrees C, stacking faults (SFs) appear in the gamma' precipitates and increase with the increasing temperature, whereas most of dislocations bypass the gamma' precipitates at 1000 degrees C. |
| 资助项目 | National Natural Science Foundation of China[51831007] ; National Science and Technology Major Project[2017-VI-0003-0073] ; Key Research and Development Program of Liaoning Province[2019JH2/10100009] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000682358100003 |
| 资助机构 | National Natural Science Foundation of China ; National Science and Technology Major Project ; Key Research and Development Program of Liaoning Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/159559]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Yingju; Yang, Yuansheng |
| 作者单位 | 1.Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen 361005, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Shasha,Li, Yingju,Tong, Min,et al. Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,823:11. |
| APA | Qu, Shasha,Li, Yingju,Tong, Min,Wang, Cuiping,&Yang, Yuansheng.(2021).Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,823,11. |
| MLA | Qu, Shasha,et al."Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 823(2021):11. |
入库方式： OAI收割
来源：金属研究所
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