Abstract
Butt joining of titanium alloy Ti–2Al–Mn to aluminum 1060 using AlSi5 filler wire was conducted using pulsed gas metal arc welding. Joining mechanism of Ti–2Al–Mn/Al 1060 dissimilar joint with different welding heat input was investigated. Formations of precipitation and Ti/Al interface were discussed in detail. Fusion zone near aluminum is composed of α-Al dendrites and Al–Si hypoeutectic structures. A few TiAl3 precipitations appear in the weld metal owing to metallurgical reactions of Al with dissolved Ti. When the welding heat input was in the range of 1.87–2.10 kJ/cm, titanium alloy Ti–2Al–Mn and Al 1060 were joined together by the formation of a complex Ti/Al interface. With a low welding heat input, a serrate TiAl3 interfacial reaction layer was formed near Ti/Al interface. With the increasing of the welding heat input, α-Ti, Ti7Al5Si12, and TiAl3 layers were formed orderly from Ti–2Al–Mn to weld metal.
Similar content being viewed by others
References
Kreimeyer M, Wagner F, Vollertsen F (2005) Laser processing of aluminum titanium tailored blanks. Opt Lasers Eng 43:1021–1035
Meoller F, Grden M, Thomy C, Vollertsen F (2011) Combined laser beam welding and brazing process for aluminum titanium hybrid structures. Phys Procedia 12:215–223
Chen YB, Chen SH, Li LQ (2009) Effects of heat input on microstructure and mechanical property of Al/Ti joints by rectangular spot laser welding-brazing method. Int J Adv Manuf Technol 44:265–272
Ma ZP, Wang CW, Yu HC, Yan JC, Shen HR (2013) The microstructure and mechanical properties of fluxless gas tungsten arc welding-brazing joints made between titanium and aluminum alloys. Mater Des 45:72–79
Dressler U, Biallas G, Alfaro Mercado U (2009) Friction stir welding of titanium alloy TiAl6V4 to aluminium alloy AA2024-T3. Mater Sci Eng A 526:113–117
Chen YC, Nakata K (2009) Microstructural characterization and mechanical properties in friction stir welding of aluminum and titanium dissimilar alloys. Mater Des 30:469–474
Wei YN, Li JL, Xiong JT, Huang F, Zhang FS, Raza SH (2012) Joining aluminum to titanium alloy by friction stir lap welding with cutting pin. Mater Charact 71:1–5
Kenevisi MS, Mousavi Khoie SM (2012) A study on the effect of bonding time on the properties of Al7075 to Ti-6Al-4V diffusion bonded joint. Mater Lett 76:144–146
AlHazaa AN, Khan TI (2010) Diffusion bonding of Al7075 to Ti-6Al-4V using Cu coatings and Sn-3.6Ag-1Cu interlayers. J Alloys Compd 494:351–358
Song ZH, Nakata K, Wu AP, Liao JS (2013) Interfacial microstructure and mechanical property of Ti6Al4V/A6061 dissimilar joint by direct laser brazing without filler metal and groove. Mater Sci Eng A 560:111–120
Zhu ZQ, Lee KY, Wang XL (2012) Ultrasonic welding of dissimilar metals, AA6061 and Ti6Al4V. Int J Adv Manuf Technol 59:569–574
Chen SH, Li LQ, Chen YB, Huang JH (2011) Joining mechanism of Ti/Al dissimilar alloys during laser welding-brazing process. J Alloys Compd 509:891–898
Chen YB, Chen SH, Li LQ (2010) Influence of interfacial reaction layer morphologies on crack initiation and propagation in Ti/Al joint by laser welding-brazing. Mater Des 31:227–233
Chen SH, Li LQ, Chen YB, Liu DJ (2010) Si diffusion behavior during laser welding-brazing of Al alloy and Ti alloy with Al-12Si filler wire. Trans Nonferrous Metals Soc China 20:64–70
Enjo T, Ikeuchi K, Horinouchi T (1986) Effect of impurity in aluminum on diffusion welding of aluminum to titanium. Trans JWRI 15(1):61–68
Hansen SC, Loper CR Jr (2000) Effect of antimony on the phase equilibrium of binary Al-Si alloys. Calphad 3:339–352
Wang B, Jiang SS, Zhang KF (2013) Pulse current auxiliary TLP diffusion bonding of SiCp/2024Al composite sheet using Al-Cu-Ti powder interlayer. Int J Adv Manuf Technol 65:1779–1784
Gupta SP (2003) Intermetallic compounds in diffusion couples of Ti with an Al-Si eutectic alloy. Mater Charact 49:321–330
Mirjalili M, Soltanieh M, Matsuura K, Ohno M (2013) On the kinetics of TiAl3 intermetallic layer formation in the titanium and aluminum diffusion couple. Intermetallics 32:297–302
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Shouzheng, W., Yajiang, L., Juan, W. et al. Microstructure and joining mechanism of Ti/Al dissimilar joint by pulsed gas metal arc welding. Int J Adv Manuf Technol 70, 1137–1142 (2014). https://doi.org/10.1007/s00170-013-5290-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00170-013-5290-5