It would still need to be under warranty to do that. Generally they wont ever take anything back if its not under warranty, otherwise they would lose too much money.
Plus, I believe it's only XFX that offers the double (re: transferable) lifetime warranty. Most regular warranties are for the original purchaser only, regardless of time frame. Now, IF the part is still under warranty, and IF your friend is the original purchaser, then HE might be able to get it replaced.