Per AMS2680 3.7.1 for electron beam (EB) welding of titanium it is generally acceptable to have this bluish vapor deposition, as long as it is not in the weld joint itself.
Per the spec, the weld bead and the adjacent parent material should bear semblance to the unwelded parent material- having...
Also, you can go to a reputable EB weld shop and have them do the weld development for you. Based off there experience they will typically know best which standards your application should be following and can recommend the appropriate testing as well- eliminating some of the guess work.
It's a...
