A comparison of the ideal strength between L1(2)Co(3)(Al,W) and Ni(3)Al under tension and shear from first-principles calculations

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	A comparison of the ideal strength between L1(2)Co(3)(Al,W) and Ni(3)Al under tension and shear from first-principles calculations
	Y. J. Wang; C. Y. Wang
	2009
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	94 期号:26
摘要	The ideal strengths of L1(2)Co(3)(Al,W) in comparison with Ni(3)Al are investigated using the first-principles method. Results for the stress-strain relationships, ideal tensile and shear strengths are presented. The calculated elastic properties agree well with the experimental observations. Co(3)(Al,W) is found to have larger moduli and higher strengths, but less ductile than Ni(3)Al. The electronic structures indicate the directional covalentlike Co-W bonding through d-d hybridization is the origin of excellent mechanical properties of Co(3)(Al,W).
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, yj (reprint author), tsinghua univ, dept phys, beijing 100084, peoples r china;wangyunjiang05@mails.tsinghua.edu.cn
关键词	Ab Initio Calculations Aluminium Alloys Cobalt Alloys Ductility Elastic Moduli Electronic Structure Nickel Alloys Shear Strength Stress-strain Relations Tungsten Alloys W-base Alloys
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32403
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. A comparison of the ideal strength between L1(2)Co(3)(Al,W) and Ni(3)Al under tension and shear from first-principles calculations[J]. Applied Physics Letters,2009,94(26).
APA	Y. J. Wang,&C. Y. Wang.(2009).A comparison of the ideal strength between L1(2)Co(3)(Al,W) and Ni(3)Al under tension and shear from first-principles calculations.Applied Physics Letters,94(26).
MLA	Y. J. Wang,et al."A comparison of the ideal strength between L1(2)Co(3)(Al,W) and Ni(3)Al under tension and shear from first-principles calculations".Applied Physics Letters 94.26(2009).