Hi AVance!
First off,
"WELDCOME TO THE WORLD'S GREATEST WELDING FORUM!!! :) :) :)"Second, from what you describe as wanting to know a bit more with respect to Titanium, or "Ti..." These links should give you enough information to get you in the right direction so that you can have all you "Ducks in a row" so to speak. :)
http://www.millerwelds.com/resources/articles/TIG-gtaw-titanium-weldingThis one is the design and fabrication manual from TIMET who just happen to be the world leader in Titanium production and expertise... The welding information you're looking for can be found in pages 29 to 38 in the .pdf document in this link:
http://www.timet.com/pdfs/ti-handbook.pdfThis link is Ed Craig's web site, and it takes you right to his link on welding Titanium... An excellent site for giving a visual chart to judge acceptable colors in Ti welds:
http://www.weldreality.com/Titanium%20Data.htmHere is a very good visual page to show you what is acceptable color wise and also gives a tip on how to convert a basting cabinet into a welding chamber for Ti! ;)
Not as technical as the first two links but nonetheless, it's a good link that shows the differences in color, or the lack of color in successful Ti welds! ;)
http://www.weldingtipsandtricks.com/welding-titanium.htmlHere is a workshop being given by the International Titanium Association:
http://www.titanium.org/Category.cfm?CategoryID=221This course is being given by the Edison Welding Institute:
http://www.ewi.org/education/welding_training_detail.asp?IDStandardTraining=5Finally, I'm just going to throw this in for your entertainment regarding hte next generation of fighting vehicles made of Ti Armour and which I personally like the idea!!! :) :) :)
http://weldingdesign.com/processes/news/wdf_11146/This is a .pdf on the microstructure of Titanium welds:
http://www.struers.com/resources/elements/12/38860/e-Structure%203_EN.pdfI'll post more when I gather the links if you need more data, but I think you should have enough for now to decide whether or not you should go to one of the courses I listed above, or you should have enough reference material here to get you back to where you were when you were welding Ti previously. ;)
Respectfully,
Henry