Title:
WELDED STRUCTURE AND STORAGE TANK
Document Type and Number:
WIPO Patent Application WO/2021/201122
Kind Code:
A1
Abstract:
A welded structure which comprises a matrix comprising a duplex stainless steel and a welded part at which parts of the matrix are welded to each other, in which the matrix comprises specified chemical components, the volume ratio of a ferrite phase in a metal structure of a welded metal in the welded part is 45 to 75%, the ratio of the hardness of the welded metal to the hardness of the matrix is 0.8 to 1.2, and the area ratio of the amount of precipitates generated in the ferrite phase of the welded metal is less than 10%.
Inventors:
ISHIMARU EIICHIRO (JP)
SAKURABA TAKUYA (JP)
KAGA YUJI (JP)
KAKIHARA TOYOHIKO (JP)
SAKURABA TAKUYA (JP)
KAGA YUJI (JP)
KAKIHARA TOYOHIKO (JP)
Application Number:
PCT/JP2021/013907
Publication Date:
October 07, 2021
Filing Date:
March 31, 2021
Export Citation:
Assignee:
NIPPON STEEL STAINLESS STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/58; C22C38/60
Domestic Patent References:
| WO2008062650A1 | 2008-05-29 |
Foreign References:
| JP2010065279A | 2010-03-25 | |||
| JP2011173124A | 2011-09-08 | |||
| JP2014084493A | 2014-05-12 | |||
| JP2020064501A | 2020-04-23 | |||
| JPS5010323B1 | 1975-04-21 | |||
| JP3179194B2 | 2001-06-25 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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