The effect of lanthanum on the microstructure and high temperature mechanical properties of a beta-solidifying TiAl alloy

被引：19
|
作者：
Hadi, Morteza [1 ]
Meratian, Mahmood [1 ]
Shafyei, Ali [1 ]
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 618卷
关键词：
Intermetallics; Mechanical properties; Microstructure; Scanning electron microscopy; SOLIDIFICATION BEHAVIOR; DESIGN;
D O I：
10.1016/j.jallcom.2014.08.124
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：
The effect of lanthanum (La) on the microstructure and high temperature mechanical properties of Ti-43.5Al-4Nb-1Mo-0.1B alloy was examined by high temperature compression tests, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results showed that the volume fraction and the mean size of dispersed oxide particles were increased with increasing La content. Besides, a small amount of La-addition was effective in improving the peak flow stress, particularly for 0.2 at.% La-added specimen, showing 14% and 44% enhancement at 900 and 1000 degrees C, respectively. The microstructure of hot deformed samples also indicated that small and closely spaced oxide particles had retarding effect on dynamic recrystallization. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：27 / 32
页数：6
相关论文
共 50 条
  • [1] The effect of lanthanum on the microstructure and high temperature mechanical properties of a beta-solidifying TiAl alloy
    [J]. Hadi, Morteza, 1600, Elsevier Ltd (618):
  • [2] The effect of lanthanum on the microstructure and high temperature mechanical properties of a beta-solidifying TiAl alloy
    Hadi, Morteza
    Meratian, Mahmood
    Shafyei, Ali
    [J]. Journal of Alloys and Compounds, 2015, 618 (01) : 27 - 32
  • [3] The effect of lanthanum on the microstructure and high temperature mechanical properties of a beta-solidifying TiAl alloy
    Hadi, Morteza
    Meratian, Mahmood
    Shafyei, Ali
    [J]. Journal of Alloys and Compounds, 2015, 618 : 27 - 32
  • [4] Microstructure and properties of a beta-solidifying TiAl-based alloy with different refiners
    Ning Cui
    Xiao-Peng Wang
    Fan-Tao Kong
    Yu-Yong Chen
    Hai-Tao Zhou
    [J]. Rare Metals, 2016, 35 (01) : 42 - 47
  • [5] Microstructure and properties of a beta-solidifying TiAl-based alloy with different refiners
    Ning Cui
    Xiao-Peng Wang
    Fan-Tao Kong
    Yu-Yong Chen
    Hai-Tao Zhou
    [J]. Rare Metals, 2016, 35 : 42 - 47
  • [6] Microstructure and properties of a beta-solidifying TiAl-based alloy with different refiners
    Cui, Ning
    Wang, Xiao-Peng
    Kong, Fan-Tao
    Chen, Yu-Yong
    Zhou, Hai-Tao
    [J]. RARE METALS, 2016, 35 (01) : 42 - 47
  • [7] Effect of thermal exposure on microstructure evolution and mechanical properties of cast beta-solidifying TiAl-based alloy doped with Gd
    Panin, P. V.
    Zavodov, A. V.
    Lukina, E. A.
    [J]. INTERMETALLICS, 2022, 145
  • [8] Determination of Critical Points of Variable Composition Beta-Solidifying TiAl-Alloy
    P. V. Panin
    E. A. Lukina
    A. S. Kochetkov
    A. L. Yakovlev
    S. I. Pakhomkin
    K. A. Speransky
    [J]. Metallurgist, 2021, 65 : 454 - 464
  • [9] Determination of Critical Points of Variable Composition Beta-Solidifying TiAl-Alloy
    Panin, P. V.
    Lukina, E. A.
    Kochetkov, A. S.
    Yakovlev, A. L.
    Pakhomkin, S. I.
    Speransky, K. A.
    [J]. METALLURGIST, 2021, 65 (3-4) : 454 - 464
  • [10] Effect of Multi-Directional Forging on the Microstructure and Mechanical Properties of -Solidifying TiAl Alloy
    Cui, Ning
    Wu, Qianqian
    Bi, Kexiao
    Wang, Jin
    Xu, Tiewei
    Kong, Fantao
    [J]. MATERIALS, 2019, 12 (09):
12345