NANOSTRUCTURED SUPERALLOY STRUCTURAL COMPONENT, AND MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a nanostructured superalloy structural component and its manufacturing method. SOLUTION: The superalloy-containing structural component is so constituted that: it includes a superalloy matrix and a plurality of hard-phase nanoparticles dispersed at grain boundaries within the superalloy matrix; the plurality of hard-phase nanoparticles dispersed at the grain boundaries comprise about 1 to about 30 vol.% of the structural component; and the superalloy matrix and the plurality of hard-phase nanoparticles dispersed at the grain boundaries within the base superalloy matrix are thermo-mechanically processed to form the structural component. The method for manufacturing the structural component includes: a step of introducing dislocations into a superalloy particle matrix, effective to form new grain boundaries within a plurality of superalloy particles; a step of introducing hard-phase dispersoid nanoparticles at a plurality of grain boundaries of the superalloy particles, effective to pin the grain boundaries; and a step of thermo-mechanically processing the superalloy particles and the hard-phase dispersoid nanoparticles to form the superalloy-containing structural component. COPYRIGHT: (C)2008,JPO&INPIT