Phase equilibria of the Ti-Al-Nb system at 1300 °C

被引：23
|
作者：
Xu, Shuai [1 ]
Xu, Yong [2 ]
Liang, Yongfeng [1 ]
Xu, Xiangjun [3 ]
Gao, Shubo [1 ]
Wang, Yanli [1 ]
He, Jianping [1 ]
Lin, Junpin [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Shandong Jianzhu Univ, Sch Mat Sci & Engn, Jinan 250101, Shandong, Peoples R China
[3] Yangtze Normal Univ, Sch Mech & Elect Engn, Chongqing 408100, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 724卷
基金：
中国国家自然科学基金;
关键词：
TiAl alloy; Intermetallics; Phase diagram; Microstructure; 1400-DEGREES-C ISOTHERMAL SECTION; THERMODYNAMIC ASSESSMENT; ALLOYS; TRANSFORMATIONS; MICROSTRUCTURE; REEVALUATION;
D O I：
10.1016/j.jallcom.2017.06.195
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Phase equilibria in the Ti-Al-Nb system at 1300 degrees C were studied using X-ray diffraction, scanning electron microscopy and electron probe microanalysis. Using the results, an isothermal section at 1300 degrees C for this system was constructed. No ternary compound was observed in this work. The isothermal section is characterized by four three-phase regions (alpha + beta + gamma, beta + gamma + sigma, sigma + delta + beta and sigma +gamma + epsilon) plus the corresponding two-phase regions. The locations and areas of the tie-triangles are different from the previous results. The homogeneity range of alpha, gamma, sigma, delta and epsilon is located along a constant Al concentration. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：339 / 347
页数：9
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