摘要
应用多元扩散偶-电子探针微区分析技术及X射线衍射分析方法,测定了Ti-Al-Cr三元系相图1000℃等温截面的含Al量达75at.-%,含Cr量达70at.-%的大部分区域。确定了Ll2结构的三元化合物相及其成分范围,完整地测定了TiAl,Ti3Al,TiAl2及TiAl3的相区范围及相平衡关系。
Isothermal section of phase diagram in Ti-Al-Cr ternary system at 1000℃,which contains wide field upto 75 at.-% Al and 70 at.-% Cr, was determined using a method of multiple diffusion couple-electron probe microanalysis (EMPA) and X-ray diffractionanalysis. Ll2 ternary compound phase and its composition range were determined, and phase ranges and phase equilibrium relationships with regard to TiAl, Ti3Al, TiAl2 and TiAl3 were determined completely. Phase equilibrium relationship between β-Ti and TiCr2 and composition range of phase TiCr2 were defined.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第4期B152-B158,共7页
Acta Metallurgica Sinica
基金
国家自然科学基金
关键词
相图
等温截面
金属间化合物
TiAlG系
Ti-Al-Cr system, phase diagram, isothermal section, intermetallics