Influence of the filler metal on the properties of Ti-6Al-4V electron beam weldments. Part I: Welding procedures and microstructural characterization
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2009-11-05
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The use of different procedures for electron beam welding of 17 mm thick Ti-6Al-4V plate and the difficulties found in this process are analysed. When this alloy was welded autogeneously the presence of significant amounts of α martensite was observed, recommending looking for another solution. In the early trials a V joint design was used but distortions and defects were detected in the welds when multi-pass procedures were considered. Consequently, for the remaining weldments K or I joint configurations were selected. Initially, Ti-6Al-4V wire was preferred in order to match mechanical properties with base material but no significant improvement was found leading to consideration of using a less alloyed filler metal. Different commercially pure titanium filler metals have been employed to optimise the performance of the fusion zone of electron beam weldments. In a second paper [1] the influence of the welding procedure on the mechanical properties of the various joints will be discussed.
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Irisarri , A M , Barreda , J L & Azpiroz , X 2009 , ' Influence of the filler metal on the properties of Ti-6Al-4V electron beam weldments. Part I : Welding procedures and microstructural characterization ' , Vacuum , vol. 84 , no. 3 , pp. 393-399 . https://doi.org/10.1016/j.vacuum.2009.08.003