Grain Type post weld in Grade 1 titanium
Grain Type post weld in Grade 1 titanium
(OP)
Hi Folks,
I have attached an old image of a butt joint laser weld from thin sheet grade 1 titanium . The quality of the image is poor however I am slighty confused as to what the grain structure and type of this sample is post weld. I can see both alpha and beta phases present which should not be considering grade of material - is this correct?
Care to comment?
I have attached an old image of a butt joint laser weld from thin sheet grade 1 titanium . The quality of the image is poor however I am slighty confused as to what the grain structure and type of this sample is post weld. I can see both alpha and beta phases present which should not be considering grade of material - is this correct?
Care to comment?





RE: Grain Type post weld in Grade 1 titanium
If you are actually seeing beta-phase constituents you have a contaminant (iron) that was introduced.
RE: Grain Type post weld in Grade 1 titanium
I agree with metengr, the weld should not have any beta phase unless there is contamination, etc. Here is an excellent article by George Vander Voort on metallography of titanium alloys, with some images of CP titanium showing essentially alpha phase only:
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RE: Grain Type post weld in Grade 1 titanium