Phase precipitation behavior and its influence on mechanical properties of a solid-solution strengthened Ni-based alloy
文献类型：期刊论文
| 作者 | Wang, Changshuai2; Zhang, Fengzhi1,2; Wu, Yunsheng2; Zhou, Lanzhang2 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2023-01-10 |
| 卷号 | 931页码:12 |
| ISSN号 | 0925-8388 |
| 关键词 | Ni-based alloy &gamma &prime phase ? phase Carbides Mechanical properties |
| DOI | 10.1016/j.jallcom.2022.167482 |
| 通讯作者 | Wang, Changshuai(cswang@imr.ac.cn) ; Zhou, Lanzhang(lzz@imr.ac.cn) |
| 英文摘要 | Phase precipitation behavior and its influence on mechanical properties of a solid-solution strengthened Ni-based alloy, used to manufacture large casting components in next generation of advanced ultra -super-critical coal fired power plant, were studied during exposure at 700 degrees C for up to 30,000 h. Detailed analysis reveals that only MC carbide exists in solution annealed alloy. During thermal exposure, gamma '', delta and M23C6 carbide precipitate, but gamma '' and MC carbide are metastable phases. gamma '' precipitation precedes delta phase, but it disappears gradually with the precipitation of delta phase. MC carbide gradually degenerates via reaction MC + gamma -> M23C6 + delta. delta phase first precipitates at grain boundary due to the segregation of Nb at grain boundary and M23C6/gamma interface, then tends to form in the vicinity of MC carbide and then appears in the inter-dendritic region. Its growth expends gamma '' phase or MC carbide. Finally, the precipitation-free zone forms in the dendrite core region. The variation trend of yield strength can be divided into three stages during thermal exposure. It first increases drastically, then increases gradually, and then keeps almost constant. gamma '' phase has a major contribution in first stage, but delta phase gradually becomes the primarily strengthened phase. The elongation decreases steeply at early stage and then has no significant change. After thermal exposure, the impact toughness at room temperature also decreases drastically. The major influence factors of elongation and impact toughness are the increase of grain interior strength and the film-like M23C6 carbide.(c) 2022 Elsevier B.V. All rights reserved. |
| 资助项目 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; [2021YFB3704103] ; [51971216] ; [51301171] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000883740400001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176738]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Changshuai; Zhou, Lanzhang |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Changshuai,Zhang, Fengzhi,Wu, Yunsheng,et al. Phase precipitation behavior and its influence on mechanical properties of a solid-solution strengthened Ni-based alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,931:12. |
| APA | Wang, Changshuai,Zhang, Fengzhi,Wu, Yunsheng,&Zhou, Lanzhang.(2023).Phase precipitation behavior and its influence on mechanical properties of a solid-solution strengthened Ni-based alloy.JOURNAL OF ALLOYS AND COMPOUNDS,931,12. |
| MLA | Wang, Changshuai,et al."Phase precipitation behavior and its influence on mechanical properties of a solid-solution strengthened Ni-based alloy".JOURNAL OF ALLOYS AND COMPOUNDS 931(2023):12. |
入库方式： OAI收割
来源：金属研究所
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