Title:
AUSTENITIC STAINLESS STEEL, AND REACTOR INTERNAL
Document Type and Number:
WIPO Patent Application WO/2019/235014
Kind Code:
A1
Abstract:
An austenitic stainless steel which comprises a mixed grain structure composed of columnar crystals having an average crystal grain diameter of 20 μm or less and equiaxed crystals having an average crystal grain diameter of 5.0 μm or less, wherein the areal ratio of the columnar crystals in the mixed grain structure is 20% or more, and the total average crystal grain diameter is 5.0 μm or less. It becomes possible to provide a material having excellent irradiation resistance and mechanical properties.
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Inventors:
ISHIZAKI TAKAHIRO (JP)
MARUNO YUSAKU (JP)
AOTA KINYA (JP)
YANG YINGJUAN (JP)
MARUNO YUSAKU (JP)
AOTA KINYA (JP)
YANG YINGJUAN (JP)
Application Number:
PCT/JP2019/009613
Publication Date:
December 12, 2019
Filing Date:
March 11, 2019
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
C22C38/00; C22C38/58; G21C5/00; G21D1/00; B22F3/105; B22F3/16
Domestic Patent References:
WO2017073422A1 | 2017-05-04 | |||
WO2017057838A1 | 2017-04-06 | |||
WO2019064641A1 | 2019-04-04 |
Foreign References:
JPS62197247A | 1987-08-31 | |||
JP2001347349A | 2001-12-18 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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