115 Ni 基超合金γ/γ′界面における変形機構の原子レベル解析

Abstract

A molecular dynamics simulation of tension is conducted on a single crystalline Ni-based superalloy with cuboidal γ' precipitates. The results indicate that a partial dislocation loop nucleated at an edge of cubic γ′precipitate divides into a pair of partial dislocations on a γ/γ′interface of neighboring γ′precipitate.