REFRACTORY METALS AND ALLOYS

Questions:

1. What are refractory metals and alloys?
2. What are some of the specific refractory metals and alloys?
3. At what temperature does these refractory metals melt?
4. Can the refractory metals or their alloys be heat treated to change their properties?
5. In what applications are the refractory metals and alloys used?
6. Can tantalum be welded?
7. Can niobium be welded?
8. Can molybdenum be welded?
9. Can tungsten be welded?
10. Can rhenium be welded?

to be continued