Effects of Al and Ti on thermal expansion behavior of a Ni-Fe-Cr-based superalloy: A combined experimental and first-principle study
文献类型：期刊论文
| 作者 | Cheng, Sihan1,2; Qin, Xuezhi1,3; Wen, Bin4; Wang, Jiaqi1,2; Wu, Yunsheng1,3; Zhou, Lanzhang1,3 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 29页码:3805-3812 |
| 关键词 | Ni-Fe-Cr-based superalloy Thermal expansion Microstructure First -principles Aluminium Titanium |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.02.080 |
| 通讯作者 | Qin, Xuezhi(xzqin@imr.ac.cn) ; Zhou, Lanzhang(lzzhou@imr.ac.cn) |
| 英文摘要 | The effects of Al and Ti on the thermal expansion coefficient (TEC) of a Ni-Fe-Cr-based superalloy, for the application of advanced ultra-supercritical (A-USC) systems, were investigated by combining the experiments and first-principles calculations. The results imply that MC/M23C6 carbides and grain boundary seem to play a minor role in the TEC of alloys due to their relatively low proportions. Al and Ti elements increase the TEC of alloys when present in gamma matrix, but they decrease the TEC value by taking part in the formation of gamma ' phase. When the amount of gamma ' phase is low, the TEC of alloys at 600-700 degrees C is dominated by gamma matrix, and consequently shows an increasing or constant trend with the increase of Al + Ti content. Replacing Al element with Ti element decreases the TEC of alloys in two ways: directly by reducing the TECs of gamma matrix and gamma ' phase, and indirectly by increasing the amount of gamma ' phase. These results can provide the theoretical basis and beneficial guidelines for the composition design and optimization of low-expansion superalloys. |
| 资助项目 | National Natural Science Foundation of China[51871213] ; National Natural Science Foundation of China[51925105] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001194362100001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Qin, Xuezhi; Zhou, Lanzhang |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 4.Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Sihan,Qin, Xuezhi,Wen, Bin,et al. Effects of Al and Ti on thermal expansion behavior of a Ni-Fe-Cr-based superalloy: A combined experimental and first-principle study[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,29:3805-3812. |
| APA | Cheng, Sihan,Qin, Xuezhi,Wen, Bin,Wang, Jiaqi,Wu, Yunsheng,&Zhou, Lanzhang.(2024).Effects of Al and Ti on thermal expansion behavior of a Ni-Fe-Cr-based superalloy: A combined experimental and first-principle study.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,29,3805-3812. |
| MLA | Cheng, Sihan,et al."Effects of Al and Ti on thermal expansion behavior of a Ni-Fe-Cr-based superalloy: A combined experimental and first-principle study".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 29(2024):3805-3812. |
入库方式： OAI收割
来源：金属研究所
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