| 摘要 |
Provided is a method for producing a Fe-Ni-based super heat-resistant alloy, whereby it becomes possible to prevent the abnormal growth of crystal grains to produce a fine crystal grain structure having an ASTM crystal grain size number of 9 or greater. A method for producing a Fe-Ni-based super heat-resistant alloy, said method comprising at least a hot working step of carrying out a hot working of a material having a specified chemical composition, wherein the hot working step comprises at least a substep of carrying out a hot working of the material at 930 to 1010ºC in such a manner that the relationship represented by the formula: [equivalent strain] ≥ 0.139×[equivalent strain rate (/sec)]-0.30 can be satisfied in the whole area of the material. |
