Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys | |
Wang, Yun-Jiang ; Wang, Chong-Yu | |
2010-10-12 ; 2010-10-12 | |
关键词 | Ni-base superalloys elastic property alloying effect first principles SINGLE-CRYSTAL SUPERALLOYS PLATINUM-GROUP METALS GAMMA/GAMMA'-INTERFACE HIGH-TEMPERATURES RE 1ST-PRINCIPLES CONSTANTS RU STABILITY RUTHENIUM Materials Science, Multidisciplinary Mechanics Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter |
中文摘要 | Using new supercells, the influence of the alloying elements Co, Cr, Ta, Re, and Ru on the elastic properties of ternary and quaternary nickel-base superalloys are systematically studied by the first-principles pseudopotential method. The calculated results of the five ternary and three quaternary superalloys suggest that the alloying elements can increase the elastic moduli. Re is found to be most effective in increasing the moduli of ternary alloys. Among the quaternary alloys, the Ni-Al-Re-Ru system has the largest moduli. Our calculated values of the elastic moduli agree very well with the experimental results. The charge density redistribution and partial density of states are calculated for the quaternary system including both Re and Ru. Covalent-like bonding between Re and its nearest neighbor is observed. The hybridization between the Re-d orbital and the host Ni-p, d orbitals are the origin of the modulus strengthening effect. |
语种 | 英语 ; 英语 |
出版者 | TAYLOR & FRANCIS LTD ; ABINGDON ; 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/81391] |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | Wang, Yun-Jiang,Wang, Chong-Yu. Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys[J],2010, 2010. |
APA | Wang, Yun-Jiang,&Wang, Chong-Yu.(2010).Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys.. |
MLA | Wang, Yun-Jiang,et al."Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys".(2010). |
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