Method for producing an austenitic steel Fe-Cr-Ni strengthened by an oxide dispersion

Abstract

The invention relates to a method for producing an austenitic steel Fe—Cr—Ni strengthened by an oxide dispersion, said method comprising the following steps: a) providing (100) an austenitic steel Fe—Cr—Ni powder; b) carrying out (200) a grinding operation, known as cryogenic grinding, on the austenitic steel Fe—Cr—Ni powder at a temperature of between −50° C. and −196° C. ; c) providing (300) a powder of oxides ; d) carrying out (400) a co-grinding of the austenitic steel Fe—Cr—Ni powder with the oxide powder thus supplied to obtain an austenitic steel Fe—Cr—Ni powder strengthened by an oxide dispersion; and e) producing (500) the austenitic steel Fe—Cr—Ni strengthened by an oxide dispersion from the powder thus produced.

Dependencies are inferred from the claim text.