| Synergistic strengthening mechanisms of rhenium in nickel-based single crystal superalloys | |
Yue En-Lai1; Yu Tao1; Wang YJ(王云江)2,3 ; Wang Chong-Yu1,4
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| Corresponding Author | Yu, Tao([email protected]) ; Wang, Yun-Jiang([email protected]) ; Wang, Chong-Yu([email protected]) |
| Source Publication | INTERMETALLICS
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| 2021-05-01 | |
| Volume | 132Pages:7 |
| ISSN | 0966-9795 |
| Abstract | A loading-unloading-reloading strategy via atomistic simulations is proposed to reveal the strengthening mechanisms of rhenium in nickel-based superalloys at ambient temperature. Simulations reproduce the experimentally observed increased flow stress with addition of rhenium. Besides the usual solid solution strengthening, two novel mechanisms are uncovered. One is that rhenium facilitates the dislocation nucleation and, thus, increases the propensity of forest dislocation interactions. The other involves a critical role of rhenium in promoting accumulation of sessile stair-rod dislocations, served as obstacles for the glissile dislocations. The three mechanisms synergistically render a stronger alloy, which is heuristic to design advanced superalloys in extreme environments. |
| Keyword | A Intermetallics B Plastic deformation mechanisms B Solid-solution hardening D Dislocation geometry and arrangement E Molecular dynamics simulation |
| DOI | 10.1016/j.intermet.2021.107133 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000634564300001 |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | National Key Research and Development Program of China[2017YFB0701502] ; National Key Research and Development Program of China[2017YFB0701503] ; NSFC[11672299] ; NSFC[12072344] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017025] |
| Funding Organization | National Key Research and Development Program of China ; NSFC ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86354 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Cent Iron & Steel Res Inst, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China; 4.Tsinghua Univ, Dept Phys, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Yue En-Lai,Yu Tao,Wang YJ,et al. Synergistic strengthening mechanisms of rhenium in nickel-based single crystal superalloys[J]. INTERMETALLICS,2021,132:7. |
| APA | Yue En-Lai,Yu Tao,王云江,&Wang Chong-Yu.(2021).Synergistic strengthening mechanisms of rhenium in nickel-based single crystal superalloys.INTERMETALLICS,132,7. |
| MLA | Yue En-Lai,et al."Synergistic strengthening mechanisms of rhenium in nickel-based single crystal superalloys".INTERMETALLICS 132(2021):7. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021143.pdf（6790KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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