Gas tungsten arc welding with a pure Cu filler wire was carried out to join the TC4 titanium alloy and 304 stainless steel. Filling pure Cu filler wire assisted with regulating welding current could effectively restrain the concentrated generation of Ti–Fe brittle intermetallic compounds. Three joining modes exist in the fusion welding titanium alloy and stainless steel. In the partial fusion welding mode, the TiCu phase decreased and the fine granular τ2 phase formed in the Ti/Cu interfacial zone, simultaneously, the molten zone consisted of a Cu solid solution and α-(Fe, Cr) phase formed at the Cu/Fe interface, resulting in mechanical interlocking effect and consequent high tensile strength of 363 MPa. Increasing the welding current would lead to the alloying of TixCuy phases, and then enhance the Ti/Cu interface.
LeyensC, PetersM.Titanium and titanium alloys: fundamentals and applications. Weinheim Germany: Wiley-VCH; 2003. doi:10.1002/3527602119.
2.
TomashchukI, SallamandP, BelyavinaN, . Evolution of microstructures and mechanical properties during dissimilar electron beam welding of titanium alloy to stainless steel via copper interlayer. Mater Sci Eng A. 2013;585:114–122. doi:10.1016/j.msea.2013.07.050
3.
NorouziE, AtapourM, ShamanianM, . Effect of bonding temperature on the microstructure and mechanical properties of Ti-6Al-4 V to AISI 304 transient liquid phase bonded joint. Mater Des. 2016;99:543–551. doi:10.1016/j.matdes.2016.03.101
4.
ChuQ, BaiR, ZhangM, . Microstructure and mechanical properties of titanium/steel bimetallic joints. Mater Charact. 2017;132:330–337. doi:10.1016/j.matchar.2017.08.025
5.
ChenS, ZhangM, HuangJ, . Microstructures and mechanical property of laser butt welding of titanium alloy to stainless steel. Mater Des. 2014;53:504–511. doi:10.1016/j.matdes.2013.07.044
6.
WangT, ZhangB, FengJ, . Effect of a copper filler metal on the microstructure and mechanical properties of electron beam welded titanium–stainless steel joint. Mater Charact. 2012;73:104–113. doi:10.1016/j.matchar.2012.08.004
7.
LiB, ChenZ, HeW, . Effect of titanium grain orientation on the growth of compounds at diffusion bonded titanium/steel interfaces. Mater Charact. 2019;148:243–251. doi:10.1016/j.matchar.2018.12.029
8.
SathishT, Dinesh KumarS, MuthukumarK, . Temperature distribution analysis on diffusion bonded joints of Ti-6Al-4 V with AISI 4140 medium carbon steel. Mater Today Proc. 2020;21:847–856. doi:10.1016/j.matpr.2019.07.601
9.
LiS, ChenY, KangJ, . Interfacial microstructures and mechanical properties of dissimilar titanium alloy and steel friction stir butt-welds. J Manuf Process. 2019;40:160–168. doi:10.1016/j.jmapro.2019.03.015
10.
LiuH, AokiY, AokiY, . Principle for obtaining high joint quality in dissimilar friction welding of Ti-6Al-4 V alloy and SUS316L stainless steel. J Mater Sci Technol. 2020;46:211–224. doi:10.1016/j.jmst.2019.10.037
11.
DongH, YangZ, YangG, . Vacuum brazing of TiAl alloy to 40Cr steel with Ti60Ni22Cu10Zr8 alloy foil as filler metal. Mater Sci Eng A. 2013;561:252–258. doi:10.1016/j.msea.2012.11.014
12.
LeeJG, LeeM-K.Microstructure and mechanical behavior of a titanium-to-stainless steel dissimilar joint brazed with Ag-Cu alloy filler and an Ag interlayer. Mater Charact. 2017;129:98–103. doi:10.1016/j.matchar.2017.04.032
13.
XiaY, DongH, ZhangR, . Interfacial microstructure and shear strength of Ti6Al4V alloy/316 L stainless steel joint brazed with Ti33.3Zr16.7Cu50−xNix amorphous filler metals. Mater Des. 2020;187:108380. doi:10.1016/j.matdes.2019.108380
14.
WangT, ZhangB, WangH, . Microstructures and mechanical properties of electron beam-welded titanium-steel joints with vanadium, nickel, copper and silver filler metals. J Mater Eng Perform. 2014;23:1498–1504. doi:10.1007/s11665-014-0897-8
15.
TomashchukI, GreveyD, SallamandP.Dissimilar laser welding of AISI 316L stainless steel to Ti6–Al4–6 V alloy via pure vanadium interlayer. Mater Sci Eng A. 2015;622:37–45. doi:10.1016/j.msea.2014.10.084
16.
ZhangY, ZhouJ, SunD, . Two pass laser welding of TC4 titanium alloy to 301L stainless steel via pure V interlayer. J Mater Res Technol. 2020;9:1400–1404. doi:10.1016/j.jmrt.2019.11.066
17.
ZhangY, SunDQ, GuXY, . Nd:YAG pulsed laser welding of TC4 Ti alloy to 301L stainless steel using Ta/V/Fe composite interlayer. Mater Lett. 2018;212:54–57. doi:10.1016/j.matlet.2017.10.057
18.
FangY, JiangX, SongT, . Pulsed laser welding of Ti-6Al-4 V titanium alloy to AISI 316L stainless steel using Cu/Nb bilayer. Mater Lett. 2019;244:163–166. doi:10.1016/j.matlet.2019.02.075
19.
WangT, ZhangB, ChenG, . High strength electron beam welded titanium–stainless steel joint with V/Cu based composite filler metals. Vacuum. 2013;94:41–47. doi:10.1016/j.vacuum.2013.01.015
20.
LiuK, LiY, WangJ.Improving the interfacial microstructure evolution of Ti/stainless steel GTA welding joint by employing Cu filler metal. Mater Manuf Process. 2016;31:2165–2173. doi:10.1080/10426914.2016.1151042
21.
PardalG, GangulyS, WilliamsS, . Dissimilar metal joining of stainless steel and titanium using copper as transition metal. Int J Adv Manuf Technol. 2016;86:1139–1150. doi:10.1007/s00170-015-8110-2
22.
MouG, HuaX, WuD, . Microstructure and mechanical properties of cold metal transfer welding-brazing of titanium alloy (TC4) to stainless steel (304L) using V-shaped groove joints. J Mater Process Technol. 2019;266:696–706. doi:10.1016/j.jmatprotec.2018.09.019
23.
MouG, HuaX, ShenC, . Effects of thermal distribution strategy on a Ti-6Al-4 V/304L dissimilar joint fabricated using the variable polarity cold metal transfer arc-brazing method. Mater Des. 2020;191:108619. doi:10.1016/j.matdes.2020.108619
24.
MouG, HuaX, WangM, . Effect of axial magnetic field on cold metal transfer arc-brazing of Ti6Al4V to 304L steel. J Mater Process Technol. 2020;275:116322. doi:10.1016/j.jmatprotec.2019.116322
25.
ChengZ, HuangJ, YeZ, . Interfacial microstructure evolution and mechanical properties of TC4 alloy/304 stainless steel joints with different joining modes. J Manuf Process. 2018;36:115–125. doi:10.1016/j.jmapro.2018.09.027
26.
ChengZ, HuangJ, YeZ, . Butt brazing of titanium alloys/stainless steel plates by MIG-TIG double-sided arc welding process with copper filler metal. J Mater Res Technol. 2019;8:1566–1570. doi:10.1016/j.jmrt.2018.06.009
27.
LiuH, ChengZ, HuangJ, . Feasibility study of different filler metals on MIG-TIG double-sided arc brazing of titanium alloy-stainless steel. J Manuf Process. 2019;47:183–191. doi:10.1016/j.jmapro.2019.09.029
28.
SunQ, JinP, LiuY, . Wetting of liquid copper on TC4 titanium alloy and 304 stainless steel at 1273–1433 K. Mater Des. 2019;169:107667. doi:10.1016/j.matdes.2019.107667
van BeekJA, KodentsovAA, van LooFJJ.Phase equilibria in the Cu•Fe•Ti system at 1123 K. J Alloys Compd. 1995;217:97–103. doi:10.1016/0925-8388(94)01302-X
CaoR, FengZ, ChenJH.Microstructures and properties of titanium–copper lap welded joints by cold metal transfer technology. Mater Des. 2014;53:192–201. doi:10.1016/j.matdes.2013.06.030
