Atomic-scale understanding of the effects of Cr and Ti on γ′ growth kinetics in the Ni-Al-X ternary system: Diffusion couple technique and DFT study
文献类型：期刊论文
| 作者 | Gao, Xinyu1,2; Tian, Yuan3; Wen, Xin1,2; Qiao, Shichang1,2; Wang, Fengzhen1,2; Li, Na1,2; Xia, Zhikang1,2; Wang, Yongqianag2; Liu, Shuai2; Yuan, Chao1,2 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 35页码:1311-1322 |
| 关键词 | Ni-based alloy Diffusion couple Precipitation kinetic Solid state phase transformation First-principles |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2025.01.097 |
| 通讯作者 | Liu, Shuai(shuailiu@imr.ac.cn) ; Yuan, Chao(ychao@imr.ac.cn) |
| 英文摘要 | Cr and Ti are essential elements in Ni-based superalloys for gamma solid solution strengthening and gamma ' precipitation strengthening, respectively, enhancing high-temperature performance. Despite the known benefits of high concentrations, the effects of lower Cr and Ti concentrations on gamma ' precipitation kinetics remain unclear. This study investigates the temporal evolution of gamma ' phase in Ni-Al-X (X = Cr, Ti) system, utilizing diffusion-couple alongside aberration-corrected transmission electron microscopy to unveil atomic-scale effects. Experimental results demonstrate that Cr and Ti accelerate gamma ' phase formation due to competition between lattice misfit and interdiffusion. Moreover, gamma ' phase forms through an order-disorder transition, regulated by alloy type. Firstprinciples calculations indicate that Cr and Ti favor gamma ' phase formation thermodynamically and kinetically. Al compressibility from Cr and Ti doping promotes gamma ' formation. These insights aid in designing Ni-based superalloys with improved microstructural stability and high-temperature performance. |
| 资助项目 | Liaoning ST Project[2023JH1/10400054] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001404866800001 |
| 出版者 | ELSEVIER |
| 资助机构 | Liaoning ST Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Shuai; Yuan, Chao |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Xinyu,Tian, Yuan,Wen, Xin,et al. Atomic-scale understanding of the effects of Cr and Ti on γ′ growth kinetics in the Ni-Al-X ternary system: Diffusion couple technique and DFT study[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2025,35:1311-1322. |
| APA | Gao, Xinyu.,Tian, Yuan.,Wen, Xin.,Qiao, Shichang.,Wang, Fengzhen.,...&Yuan, Chao.(2025).Atomic-scale understanding of the effects of Cr and Ti on γ′ growth kinetics in the Ni-Al-X ternary system: Diffusion couple technique and DFT study.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,35,1311-1322. |
| MLA | Gao, Xinyu,et al."Atomic-scale understanding of the effects of Cr and Ti on γ′ growth kinetics in the Ni-Al-X ternary system: Diffusion couple technique and DFT study".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 35(2025):1311-1322. |
入库方式： OAI收割
来源：金属研究所
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