The Study of Thermally Induced Porosity （TIP） in FGH95 and Rene' 95 P/M Superalloy

The densities of HIPed compact of Rene'95 P/M superalloy were measured before and after the solution heat treatment to study the formation of TIP, and it's changes during heat treatment. The present work has found that the amount of TIP increases with the increase of temperature and the time of heating.The temperature and the time of the heat treatment are two important factors for the specification of TIP in powder metallurgy superalloys.