Effect of cooling rate on the microstructure of electron beam welded joints of two-phase TiAl-based alloy

被引：1
|
作者：
陈国庆
张秉刚
何景山
冯吉才
机构：
[1] State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology
来源：
China Welding | 2007年 / 02期
关键词：
TiAl-based alloy; electron beam welding; cooling rate; structure;
D O I：
暂无
中图分类号：
TG456.3 [真空电子束焊];
学科分类号：
080201 ; 080503 ;
摘要：
The analysis of the microstructural characterization and phase composition of electron beam welded joint zones of Ti-43Al-9V-0.3Y alloy has been done in this study. The welded seam is mainly composed of B2 phase, the partial γ+α2 two-phase lamellar structure and granular γm phase. And the lanthanon Y existed as YAl2 phase and served as grain refined. The impact of different cooling rates on joint microstructure, fracture characteristic and tensile strength were investigated. The high cooling rate restrained the structural transformation and resulted in the ordering structure. The fracture of the joint was brittle cleavage fracture because the ordering structure went against restraining the crack propagation. With the decrease of cooling rate, the transformation amounts of lamellar structure increased, and the fracture presented the layered and cross-layered characteristic.
引用
收藏
页码：11 / 15
页数：5
相关论文
共 50 条
  • [1] Microstructure and transformation of electron beam welded joints of TiAl base alloy
    Chen, Guoqing
    Zhang, Binggang
    He, Jingshan
    Feng, Jicai
    Hanjie Xuebao/Transactions of the China Welding Institution, 2007, 28 (05): : 81 - 84
  • [2] Microstructural characterization of electron beam welded joints of TiAl-based intermetallic compound
    Wu, HQ
    Feng, JC
    He, JS
    Zhou, L
    RARE METALS, 2005, 24 (01) : 82 - 86
  • [3] Microstructural characterization of electron beam welded joints of TiAl-based intermetallic compound
    WU Huiqiang
    Rare Metals, 2005, (01) : 82 - 86
  • [4] Microstructural characterization of electron beam welded joints of TiAl-based in-termetallic compound
    WU Huiqiang
    工程科学学报, 2005, (02) : 221 - 221
  • [5] Effect of TiN on Phase Transformation Texture and Grain Refinement in Laser Beam Welded TiAl-Based Alloy
    Wang, Mengfei
    Jie, Liu
    Yong, Peng
    Wang, Kehong
    CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG, 2022, 49 (16):
  • [6] Effects of heating rate on microstructure of TiAl-based alloy
    Peng, Chao-Qun
    Huang, Bai-Yun
    He, Yue-Hui
    Zhongnan Gongye Daxue Xuebao/Journal of Central South University of Technology, 2002, 33 (01):
  • [7] RELATIONSHIP BETWEEN MICROSTRUCTURE AND COOLING RATE IN AIR-HARDENABLE TIAL-BASED ALLOY
    Frkanova, Katarina
    Lapin, Juraj
    21ST INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS (METAL 2012), 2012, : 1227 - 1233
  • [8] Microstructure of composite cementation layer on two-phase TiAl-Based alloy and its effects on oxidation resistance
    Liang, W
    Ma, XX
    Bian, LP
    Zhao, XG
    Zhang, J
    Zou, DX
    ADVANCED MATERIALS PROCESSING II, 2003, 437-4 : 443 - 446
  • [9] Effect of Post-weld Heat Treatment on Microstructure and Mechanical Properties of Laser Beam Welded TiAl-based Alloy
    Liu, Jie
    Ventzke, Volker
    Staron, Peter
    Schell, Norbert
    Kashaev, Nikolai
    Huber, Norbert
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (01): : 16 - 28
  • [10] Effect of Post-weld Heat Treatment on Microstructure and Mechanical Properties of Laser Beam Welded TiAl-based Alloy
    Jie Liu
    Volker Ventzke
    Peter Staron
    Norbert Schell
    Nikolai Kashaev
    Norbert Huber
    Metallurgical and Materials Transactions A, 2014, 45 : 16 - 28
12345