Theoretical investigation of ductilizing effects of alloying elements on TiAl

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	Theoretical investigation of ductilizing effects of alloying elements on TiAl
	Y. Song; D. S. Xu; R. Yang; D. Li; Z. Q. Hu
	1998
发表期刊	Intermetallics
ISSN	0966-9795
卷号	6 期号:3 页码:157-165
摘要	In this paper, the electronic structure of ternary TiAl-based alloys was calculated by using the discrete variational Xa cluster method. From the calculations, three parameters, the bond strength, the anisotropy of bond strength and the resistance of the lattice to dislocation motion, were defined to investigate the effects of alloying elements on the ductility of TiAl. The results of calculation show that the resistance of the lattice to dislocation motion is increased by most alloying elements, resulting in an increase of the yield strength of the alloyed compounds. The alloying elements Sc, V, Cr, Mn, Zr, Nb and Mo reduce the resistance of the lattice to 1/2<110] ordinary dislocations relative to <011] superdislocations. The relevance of these results to the ductilization of TiAl is discussed. (C) 1997 Elsevier Science Limited.
部门归属	acad sinica, inst met res, shenyang 110015, peoples r china.;song, y (reprint author), acad sinica, inst met res, 72 wenhua rd, shenyang 110015, peoples r china
关键词	Titanium Aluminides Based On Tial Alloy Design Electronic Structure Of Metals And Alloys Electronic Structure Calculation Deformation-behavior Base Alloys Compound Phase Cr Dissociation Temperature Transition Mechanisms Additions
URL	查看原文
WOS记录号	WOS:000072235100001
引用统计	被引频次：42[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/321006/37774
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Song,D. S. Xu,R. Yang,et al. Theoretical investigation of ductilizing effects of alloying elements on TiAl[J]. Intermetallics,1998,6(3):157-165.
APA	Y. Song,D. S. Xu,R. Yang,D. Li,&Z. Q. Hu.(1998).Theoretical investigation of ductilizing effects of alloying elements on TiAl.Intermetallics,6(3),157-165.
MLA	Y. Song,et al."Theoretical investigation of ductilizing effects of alloying elements on TiAl".Intermetallics 6.3(1998):157-165.