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	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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