| Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247 | |
| Li, Linxu1,2; Gong, Xiufang1; Wang, Changshuai3; Wu, Yunsheng3; Yu, Hongyao4,5; Su, Haijun2; Zhou, Lanzhang3 | |
| Corresponding Author | Wang, Changshuai(cswang@imr.ac.cn) ; Su, Haijun(shjnpu@nwpu.edu.cn) |
| 2020-10-12 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Pages | 13 |
| Abstract | Phase stability and its effect on tensile properties of MAR-M247 alloy have been investigated during thermal exposure at 800-900 degrees C for up to 10,000 h. Detailed investigations reveal that the larger secondary gamma ' phase has no obvious growth, but the smaller tertiary gamma ' phase obviously coarsens and the coalescence occurs during thermal exposure at 850 degrees C and below.gamma ' coarsening behavior is consistent with the description of Ostwald ripening theory before gamma ' coalescence. Hf-rich blocky MC carbide shows excellent thermal stability, but Ta-rich script-type MC carbide gradually degenerates via reaction, MC + gamma -> M23C6 + gamma ' and finally forms gamma film around MC and M(23)C(6)carbides. With increasing thermal exposure time, the tensile strength decreases. The ductility first increases and then decreases during exposure at 800 degrees C, but it decreases continuously at 900 degrees C. In addition, the ductility keeps almost constant when the exposure time is longer than 5000 h. |
| Keyword | Ni-based superalloy Phase stability Tensile properties Fractural behavior |
| Funding Organization | National Natural Science Foundation of China ; National Science and Technology Major Project of China ; State Key Laboratory of Long-life High Temperature Materials ; LiaoNing Revitalization Talents Program |
| DOI | 10.1007/s40195-020-01139-4 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51971216] ; National Natural Science Foundation of China[51301171] ; National Science and Technology Major Project of China[2017-VI-0018-0090] ; State Key Laboratory of Long-life High Temperature Materials[DTCC28EE190231] ; LiaoNing Revitalization Talents Program[XLYC1807038] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000577045500004 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141046 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Changshuai; Su, Haijun |
| Affiliation | 1.Dong Fang Turbine Co Ltd, State Key Lab Long Life High Temp Mat, Deyang 618000, Peoples R China 2.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China 5.Beijing CISRI GAONA Mat & Technol CO LTD, Beijing 100081, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Linxu,Gong, Xiufang,Wang, Changshuai,et al. Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:13. |
| APA | Li, Linxu.,Gong, Xiufang.,Wang, Changshuai.,Wu, Yunsheng.,Yu, Hongyao.,...&Zhou, Lanzhang.(2020).Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13. |
| MLA | Li, Linxu,et al."Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):13. |
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