Titanium/steel composite structural materials have the advantages of both materials,and have great advantages in product lightweight,low cost,energy saving and consumption reduction.Therefore,titanium/steel dissimilar metal welding has high economic value and broad applicative prospects.At present,titanium/steel dissimilar metal welding is mainly carried out by brazing,pressure welding and fusion welding.Brazing generally has the problems of low production efficiency and poor strength of welded joints.Pressure welding also has the problem of low welding production efficiency compared with fusion welding,and moreover,strict requirements on the joint form.Fusion welding has stronger adaptability,higher welding production efficiency,better mechanical properties of joints,and is more conducive to industrial production applications.Therefore,for titanium/steel dissimilar metal welding,fusion welding is the most promising technological route at present.This paper summarizes the research status of titanium/steel dissimilar metal fusion welding from the aspects of laser welding,arc welding,electron beam welding,etc.,and offers a critical and prospective discussion about the existing problems and future trends.
titanium/steeldissimilar metal weldingfusion weldinglaser weldingarc welding
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