Precipitation Behavior and Mechanical Properties of a Ni-Based Alloy with Different Silicon Contents
文献类型：期刊论文
| 作者 | Wang, Changshuai1; Zhang, Fengzhi1,2; Wu, Yunsheng1; Zhou, Lanzhang1 |
| 刊名 | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
 |
| 出版日期 | 2023-08-04 |
| 页码 | 13 |
| 关键词 | gamma'' phase delta phase carbides Ni-based alloy silicon tensile properties |
| ISSN号 | 1059-9495 |
| DOI | 10.1007/s11665-023-08553-6 |
| 通讯作者 | Wang, Changshuai(cswang@imr.ac.cn) |
| 英文摘要 | Precipitation behavior and mechanical properties of a silicon (Si) micro-alloying Ni-based alloy, considered as important structural materials in turbine, were investigated during exposure at 700 degrees C for up to 5000 h. Results reveal that the primary precipitates of solution-annealed Si micro-alloying alloys are MC carbide and Laves phase, but only MC carbide appears in alloy without Si addition. MC carbide decreases and Laves phase increases with increasing Si content. During thermal exposure at 700 degrees C, gamma'', delta, M6C and M23C6 precipitate and the major precipitate changes from gamma'' to d and then to M6C with increasing Si content. Moreover, Si suppresses the formation of film-like M23C6 carbide at grain boundary. Compared with solution-annealed alloys, the yield strength increases drastically after exposure at 700 degrees C. Moreover, with increasing Si content, the tensile properties almost keep at the same level when Si content is less than 1.0 wt.%. This indicates that gamma'', delta and M6C all have excellent strengthening effect in the present alloy. However, adding 1.5 wt.% Si significantly deteriorates the performance due to M6C coarsening and the formation of the cluster of blocky Laves phase. The strengthening effect of M6C has significant size effect. Consequently, it can be concluded that adding Si can efficiently improve castability and enhance steam oxidation resistance, and meanwhile keep excellent mechanical properties by controlling Si content. |
| 资助项目 | National Key Research and Development Program of China[2021YFB3704103] ; National Natural Science Foundation of China[51971216] ; National Natural Science Foundation of China[51301171] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001042488100004 |
| 出版者 | SPRINGER |
| 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/321006/178987]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Changshuai |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Changshuai,Zhang, Fengzhi,Wu, Yunsheng,et al. Precipitation Behavior and Mechanical Properties of a Ni-Based Alloy with Different Silicon Contents[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2023:13. |
| APA | Wang, Changshuai,Zhang, Fengzhi,Wu, Yunsheng,&Zhou, Lanzhang.(2023).Precipitation Behavior and Mechanical Properties of a Ni-Based Alloy with Different Silicon Contents.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,13. |
| MLA | Wang, Changshuai,et al."Precipitation Behavior and Mechanical Properties of a Ni-Based Alloy with Different Silicon Contents".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2023):13. |
入库方式： OAI收割
来源：金属研究所
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