MANUFACTURING PROCESS OF NI BASED SUPERALLOY AND MEMBER OF NI BASED SUPERALLOY, NI BASED SUPERALLOY, MEMBER OF NI BASED SUPERALLOY, FORGED BILLET OF NI BASED SUPERALLOY, COMPONENT OF NI BASED SUPERALLOY, STRUCTURE OF NI BASED SUPERALLOY, BOILER TUBE, COMBUSTOR LINER, GAS TURBINE BLADE, AND GAS TURBINE DISK

摘要

To provide a manufacturing process of a Ni based superalloy and a member of the Ni based superalloy which achieves both of excellent workability in a manufacturing step of the Ni based superalloy of the precipitation strengthening type which contains much amount of the gamma prime phase and excellent high temperature strength of the Ni based superalloy. The manufacturing process of a Ni based superalloy includes a step for softening the Ni based superalloy and improving the workability, in which the step for softening the Ni based superalloy and improving the workability is a step for precipitating the gamma prime phase that is incoherent with a gamma phase that is a matrix by 20 vol% or more.