Microstructural characterization and mechanical properties of Al/Ti joint welded by CMT method-Assisted hybrid magnetic field

被引：82
作者：
Sun, Q. J. [1 ,2 ]
Li, J. Z. [2 ]
Liu, Y. B. [1 ,2 ]
Li, B. P. [2 ]
Xu, P. W. [2 ]
Feng, J. C. [1 ,2 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Shandong Prov Key Lab Special Welding Technol, 2 Wenhuaxi Rd, Weihai 264209, Peoples R China
来源：
MATERIALS & DESIGN | 2017年 / 116卷
基金：
中国国家自然科学基金;
关键词：
External axial magnetic field; Pure titanium TA2; Aluminum alloy 6061-T6; Tensile shear strength; DIFFUSION BEHAVIOR; ALUMINUM-ALLOY; TI/AL JOINT; AL; TI; TITANIUM; GROWTH; TI-6AL-4V; CRACK;
D O I：
10.1016/j.matdes.2016.12.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel external axial magnetic field (EMF) hybrid CMT welding-brazing process was adopted to join pure titanium TA2 and aluminum alloy 6061-T6. The effects of the magnetic intensity and frequency on microstructure and mechanical properties of the resultant joints were revealed. The experimental results indicated that the magnetic field can affect the flowability and surface spreadability of the molten filler metal on TA2 plate, thus forming the reliable Al/Ti joint. Grain refinement, decreased Al-Ti intermetallic compounds, and increased microhardness in both the heat-affected zone and the weld were observed with the applied of the EMF. The microstructure of the interfacial IMC layer was identified as TiAI(3), and its thickness was decreased from 10 pm to 5 pm. In addition, the tensile shear strength of the Al/Ti joint reached a maximum value of 4.105 KN and fractured at the Ti base metal with the coil current and magnetic frequency set at 1.0 A and 10 Hz respectively, increasing by 93.4% compared to the normal welding process. However, the additional magnetic field could be an inverse effect on the process of Al/Ti dissimilar metal joining because of the unstable welding process. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：316 / 324
页数：9
相关论文
共 31 条
[1]  
[Anonymous], METALL MAT T A
[2]   Mechanisms of joining aluminium A6061-T6 and titanium Ti-6Al-4V alloys by cold metal transfer technology [J].
Cao, R. ;
Sun, J. H. ;
Chen, J. H. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2013, 18 (05) :425-433
[3]   Modeling and experimental analysis of fiber laser offset welding of Al-Ti butt joints [J].
Casalino, Giuseppe ;
Mortello, Michelangelo .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2016, 83 (1-4) :89-98
[4]   Yb-YAG laser offset welding of AA5754 and T40 butt joint [J].
Casalino, Giuseppe ;
Mortello, Michelangelo ;
Peyre, Patrice .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2015, 223 :139-149
[5]   Brazing of 6061 aluminum alloy/Ti-6Al-4V using Al-Si-Cu-Ge filler metals [J].
Chang, S. Y. ;
Tsao, L. C. ;
Lei, Y. H. ;
Mao, S. M. ;
Huang, C. H. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2012, 212 (01) :8-14
[6]   Impacts of external longitudinal magnetic field on arc plasma and droplet during short-circuit GMAW [J].
Chang, Yun Long ;
Liu, Xiao Long ;
Lu, Lin ;
Babkin, A. S. ;
Lee, Bo Young ;
Gao, Feng .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2014, 70 (9-12) :1543-1553
[7]   Si diffusion behavior during laser welding-brazing of Al alloy and Ti alloy with Al-12Si filler wire [J].
Chen Shu-hai ;
Li Li-qun ;
Chen Yan-bin ;
Liu De-jian .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 20 (01) :64-70
[8]   Improving interfacial reaction nonhomogeneity during laser welding-brazing aluminum to titanium [J].
Chen, Shuhai ;
Li, Liqun ;
Chen, Yanbin ;
Dai, Jingmin ;
Huang, Jihua .
MATERIALS & DESIGN, 2011, 32 (8-9) :4408-4416
[9]   Microstructure and mechanical properties of Ti-6Al-4V/Al1060 joints by ultrasonic-assisted brazing in air [J].
Chen, Xiaoguang ;
Yan, Jiuchun ;
Ren, Sichao ;
Wei, Jinghui ;
Wang, Qian .
MATERIALS LETTERS, 2013, 95 :197-200
[10]   Influence of interfacial reaction layer morphologies on crack initiation and propagation in Ti/Al joint by laser welding-brazing [J].
Chen, Yanbin ;
Chen, Shuhai ;
Li, Liqun .
MATERIALS & DESIGN, 2010, 31 (01) :227-233
1234