Site occupancy of alloying additions in titanium aluminides and its application to phase equilibrium evaluation

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	Site occupancy of alloying additions in titanium aluminides and its application to phase equilibrium evaluation
	R. Yang; Y. L. Hao; Y. Song; Z. X. Guo
	2000
发表期刊	Zeitschrift Fur Metallkunde
ISSN	0044-3093
卷号	91 期号:4 页码:296-301
摘要	This review summarizes our recent theoretical and experimental investigations of sublattice substitution of alloying elements (V, Cr, Mn, Fe, Co, Ni, Zr, Nh, Mo, Hf, Ta, W, Ga etc.) in titanium aluminides gamma-TiAl and alpha(2)-Ti3Al. Predictions of site preference of the ternary additions in TiAl using binding energy data and the Bragg-Williams model were compared with ALCHEMI measurements. The site occupancies of Cr, Mn and V in TiAl were found to be sensitive to alloy composition, in contrast to those of Nb and Fe. A method of estimating the (gamma + alpha(2)) two-phase equilibrium in ternary Ti-Al-X alloys using the site occupancies of alloying elements in the two phases was developed. Quantitative comparison between prediction and measurement of phase fractions and the boundaries of the (gamma + alpha(2)) two-phase field for a series of ternary systems with small amounts of alloying additions showed good agreement.
部门归属	cas, inst met res, shenyang 110015, peoples r china. toyohashi univ technol, dept prod syst engn, toyohashi, aichi 4418580, japan. univ london queen mary & westfield coll, dept mat, london e1 4ns, england.;yang, r (reprint author), cas, inst met res, 72 wenhua rd, shenyang 110015, peoples r china
关键词	Tial-base Alloys Substitution Behavior General Formulation Ti3al Alchemi Ternary Cr Elements Mn
URL	查看原文
WOS记录号	WOS:000087044100008
引用统计	被引频次：9[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/321006/37220
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. Yang,Y. L. Hao,Y. Song,et al. Site occupancy of alloying additions in titanium aluminides and its application to phase equilibrium evaluation[J]. Zeitschrift Fur Metallkunde,2000,91(4):296-301.
APA	R. Yang,Y. L. Hao,Y. Song,&Z. X. Guo.(2000).Site occupancy of alloying additions in titanium aluminides and its application to phase equilibrium evaluation.Zeitschrift Fur Metallkunde,91(4),296-301.
MLA	R. Yang,et al."Site occupancy of alloying additions in titanium aluminides and its application to phase equilibrium evaluation".Zeitschrift Fur Metallkunde 91.4(2000):296-301.