Hot Isostatic Pressing with Vitreous Tools

This paper discusses the use of powder metallurgy to produce gas turbine components. Various methods of manufacture are mentioned, with particular emphasis on hot isostatic pressing. Because rippling, buckling, and similar problems are associated with HIP, the use of glass or vitreous containers was attempted and found very satisfactory. The use of Astrology, Inco 718, IN-100, and Rene 95 in this technique is described. The success of these alloys, the wide shape flexibility, and the wide operating temperature range prompt the authors to feel many materials can be produced by this process.