Microstructure and mechanical properties of medium-thickness TC4 titanium alloy narrow gap welded joint

被引：0
|
作者：
Feng, Xudong [1 ]
Xu, Youwei [1 ]
Shi, Yu [1 ]
Gu, Yufen [1 ]
Zhang, Wenzhu [1 ]
机构：
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
来源：
MATERIALS LETTERS | 2024年 / 374卷
基金：
中国国家自然科学基金;
关键词：
Welding; Microstructure; Mechanical properties; TI-6AL-4V JOINTS; MORPHOLOGY; TENSILE;
D O I：
10.1016/j.matlet.2024.137150
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, narrow-gap hot wire vibrating tungsten inert gas arc welding (TIP-TIG) technology was employed to achieve reliable welding of 20 mm thick TC4 alloy plates. Microstructure and mechanical properties of different regions within the welded joint were particularly investigated. The results show that the heat-affected zone (HAZ) exhibited a typical bimodal microstructure consisting of equiaxial alpha phase, alpha' phase, and (3 phase. Meanwhile, the weld center showed a basket-weave pattern of alpha phase and (3 phase. Microhardness gradually decreased from the base metal towards the weld center, with an average microhardness of 315 HV0.2 at the weld center. The welded joints exhibited an average tensile strength of 1043 MPa, and all samples underwent ductile fracture.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Mechanical properties and microstructure of friction welded joint of hydrogen TC4 titanium alloy
    College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100124, China
    不详
    Beijing Gongye Daxue Xuebao J. Beijing Univ. Technol., 2009, 6 (732-737):
  • [2] Microstructure and mechanical properties of TC4 titanium alloy laser beam welded joint
    张书权
    王守武
    王立跃
    胥锴
    戈军委
    张伟
    China Welding, 2024, 33 (04) : 58 - 64
  • [3] Mechanical properties and microstructure features of linear friction welded TC4 titanium alloy joint
    Ma, Tiejun
    Yang, Siqian
    Zhang, Yong
    Li, Wenya
    Hanjie Xuebao/Transactions of the China Welding Institution, 2007, 28 (10): : 17 - 20
  • [4] Microstructure along thickness direction of friction stir welded TC4 titanium alloy joint
    Ji, Shude
    Wen, Quan
    Ma, Lin
    Li, Jizhong
    Zhang, Li
    Jinshu Xuebao/Acta Metallurgica Sinica, 2015, 51 (11): : 1391 - 1399
  • [5] MICROSTRUCTURE ALONG THICKNESS DIRECTION OF FRICTION STIR WELDED TC4 TITANIUM ALLOY JOINT
    Ji Shude
    Wen Quan
    Ma Lin
    Li Jizhong
    Zhang Li
    ACTA METALLURGICA SINICA, 2015, 51 (11) : 1391 - 1399
  • [6] Microstructure and Properties of 40 mm-thick TC4 Titanium Alloy Welded Joint by Narrow-gap Laser Welding with Filler Wire
    Xu K.
    Lei Z.
    Huang R.
    Yin L.
    Fang N.
    Zou J.
    Cao H.
    Cailiao Daobao/Materials Reports, 2022, 36 (02):
  • [7] Microstructure and mechanical properties of electron beam welded TC4/TA7 dissimilar titanium alloy joint
    Li, Lize
    Wang, Shaogang
    Huang, Wei
    Jin, Yang
    JOURNAL OF MANUFACTURING PROCESSES, 2020, 50 : 295 - 304
  • [8] Microstructure and mechanical properties of TC4 titanium alloy K-TIG welded joints
    Cui, Shu-wan
    Shi, Yong-hua
    Zhang, Cheng-shi
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2021, 31 (02) : 416 - 425
  • [9] Effect of welding heat input on microstructure and properties of TC4 titanium alloy ultra-narrow gap welded joint by laser welding with filler wire
    Fang, Naiwen
    Guo, Erjun
    Huang, Ruisheng
    Yin, Limeng
    Chen, Yongsheng
    Zeng, Caiyou
    Cao, Hao
    Zou, Jipeng
    Xu, Kaixin
    MATERIALS RESEARCH EXPRESS, 2021, 8 (01)
  • [10] Microstructure Transformation Characteristic of Friction Stir Welded Joint of TC4 Titanium Alloy
    Wang Wen
    Li Yao
    Wang Qingjuan
    Wang Kuaishe
    Hai Minna
    RARE METAL MATERIALS AND ENGINEERING, 2014, 43 (05) : 1143 - 1147
12345