Proceedings of the 1986 Vacuum Metallurgy Conference on Speciality Metals Melting and Processing : Pittsburgh, Pennsylvania, June 9-11, 1986 / nork Vacuum Metallurgy Conference on Specialty Metals Melting and Processing (1986 : Pittsburgh, Pa.), Lherbier, L. W., Bhat, G. K., American Vacuum Society. Vacuum Metallurgy Division, ASM International. Primary Metal Working Division, Iron and Steel Society. Process Technology Committee