Isothermal section of Al-Ti-Zr ternary system at 1073 K  

Al-Ti-Zr三元系1073K等温截面的测定（英文）

作　　者：吕凯丽[1] 杨冯[1] 谢止云 刘华山[1] 蔡格梅[1] 金展鹏[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2016年第11期3052-3058,共7页中国有色金属学报（英文版）

基　　金：Project(51171210)supported by the National Natural Science Foundation of China;Project(2014CB6644002)supported by the Major State Basic Research Development Program of China

摘　　要：Through alloy sampling combined with diffusion triple technique, phase equilibria in Al-Ti-Zr ternary system at 1073 Kwere experimentally determined with electron probe microanalysis （EPMA）. Experimental results show that there is a solid solutionβ（Ti,Zr） which dissolves Al up to 16.3% （mole fraction）. Ti and Zr can substitute each other in most Ti-Al and Al-Zr binaryintermediate phases to a certain degree while the maximum solubility of Zr in Ti3Al and TiAl reaches up to 17.9% and 4.0% （molefraction）, respectively. The isothermal section consists of 16 single-phased regions, 27 two-phased regions and 14 three-phasedregions. No ternary phase was detected.采用合金样与扩散偶相结合的方法,利用电子探针射线显微分析(EPMA)对Al-Ti-Zr三元系的1073 K等温截面的相关系进行实验测定。结果表明:截面中存在一个Al含量(摩尔分数)达到16.3%的β(Ti,Zr)固溶体。Ti和Zr可以在大多数Al-Zr和Ti-Al二元中间化合物中相互取代。其中,Zr在Ti_3Al和Ti Al中的最大固溶度分别达到17.9%和4.0%。该等温截面共包含16个单相区,27个两相区和14个三相平衡,没有检测到三元化合物。

关 键 词：Al-Ti-Zr ternary system phase equilibrium diffusion triple SOLUBILITY 

分 类 号：TG146.22[一般工业技术—材料科学与工程]