DISPERSED-PARTICLE HARDENING STEEL AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a dispersed-particle hardening steel, fully using reinforcing capability of precipitates and provide a method for producing the same. SOLUTION: The dispersed-particle hardening steel has the precipitate having an NaCl crystal structure satisfying a Baker-Nutting orientation relationship with bcc iron or bct iron serving as a mother phase. The outer diameter d and the thickness t of the precipitate satisfy the relations: a0≤d0≤t≤2a0(wherein a0is the lattice constant of the precipitate; b is the Burgers vector of bcc iron or bct iron; and e is the lattice misfit between the deposit and bcc iron or bct iron and can be expressed as (a0/21/2-a1)/a1using the lattice constant a1of bcc iron or bct iron). COPYRIGHT: (C)2011,JPO&INPIT