| Title |
Effect of Heat Treatment and HIPing on the Creep Properties of a Nickel Base Superalloy IN 713 LC |
| Authors |
김영석(Y . S . Kim); 김승언(S . E . Kim); 박로광(N . K . Park); 김학민(H . M . Kim) |
| Abstract |
In this study, the effect of heat treatment and hot isostatic pressing (HIP) on the creep-rupture properties of IN 713 LC was investigated, with special attention paid to illustrate the role of carbides at 760℃/587㎫ creep. The rupture life after ageing treatment was increased with increasing temperature for solution heat- treatment and HIP, and with decreasing time for the given temperatures. HIP did not increase the creep-rupture properties, because the failure was governed mainly by the brittle grain boundary fracture. The variation of the creep-rupture life with exposure time at solution heat-treatment temperatures, 1176℃ and 1205℃, and at ageing temperatures, 926℃, was due to the irreversible change in the kinds and shapes of the carbides near grain boundaries. |