Title:
PRECIPITATION-HARDENING-TYPE AUSTENITIC ALLOY STEEL MATERIAL AND METHOD FOR MANUFACTURING SAME, AND PRECIPITATION-HARDENING-TYPE AUSTENITIC ALLOY HEAT-TREATED STEEL MATERIAL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/145423
Kind Code:
A1
Abstract:
Provided is a method for manufacturing an austenitic alloy steel material with which it is possible to improve mechanical properties even without improving the steel composition and to expect an increase in the service life of a component in a high-pressure hydrogen environment. A method for manufacturing a precipitation-hardening-type austenitic alloy steel material including a hot forging step for preparing a forging material having a composition of a precipitation-hardening-type austenitic alloy steel material, and performing hot forging a plurality of times so that the total forging ratio is 30 or above to obtain a forged material. The method preferably includes a heat treatment step for further performing a solution heat treatment and an aging treatment on the forged material to obtain a heat-treated steel material.
Inventors:
FUJIYOSHI MASARU (JP)
TAKUWA OSAMU (JP)
TAKEHARA RYUJI (JP)
TAKUWA OSAMU (JP)
TAKEHARA RYUJI (JP)
Application Number:
PCT/JP2023/000383
Publication Date:
August 03, 2023
Filing Date:
January 11, 2023
Export Citation:
Assignee:
PROTERIAL LTD (JP)
International Classes:
B21J1/04; B21J1/06; C21D6/00; C21D8/00; C22C30/00; C22C38/00; C22C38/58; C22C38/60; C22F1/00; C22F1/16
Domestic Patent References:
| WO2016152985A1 | 2016-09-29 |
Foreign References:
| JP2006334607A | 2006-12-14 | |||
| JP2017036477A | 2017-02-16 | |||
| JP2016074946A | 2016-05-12 | |||
| CN111235434A | 2020-06-05 |
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