Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys

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	Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys
	Y. J. Wang; C. Y. Wang
	2009
发表期刊	Philosophical Magazine
ISSN	1478-6435
卷号	89 期号:32 页码:2935-2947
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.
部门归属	[wang, yun-jiang; wang, chong-yu] tsinghua univ, dept phys, beijing 100084, peoples r china. [wang, chong-yu] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [wang, chong-yu] china ctr adv sci & technol, world lab, beijing 100080, peoples r china.;wang, yj (reprint author), tsinghua univ, dept phys, beijing 100084, peoples r china;wangyunjiang05@mails.tsinghua.edu.cn
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
URL	查看原文
WOS记录号	WOS:000271871900004
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32404
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. J. Wang,C. Y. Wang. Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys[J]. Philosophical Magazine,2009,89(32):2935-2947.
APA	Y. J. Wang,&C. Y. Wang.(2009).Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys.Philosophical Magazine,89(32),2935-2947.
MLA	Y. J. Wang,et al."Influence of alloying elements on the elastic properties of ternary and quaternary nickel-base superalloys".Philosophical Magazine 89.32(2009):2935-2947.