Study of the Inert-Gas Arc Welding of Titanium and its Alloys (2nd Report)

On the Structural Change of the Heat Affected Zone in Titanium Welds

Abstract

In this investigation, were studied about the structural change of the heat affected zone in titanium welds.
The structures in titanium welds were, in order from the base metal to the weld metal, α, grown α, α'+α and α' (all of these are H.C.P. structure).
The zone which were thought to have been heated about 900°C or so, was softest and the structure was grown α.
In the tensile test of titanium butt joints, the specimens were failued in this part, however the destruction had plenty of ductility.