公开(公告)号：US20170167005A1

公开(公告)日：2017-06-15

申请号：US15324047

申请日：2015-03-18

Applicant: HITACHI, LTD.

Inventor： Takahiro ISHIZAKI ,  Junya KANEDA

IPC: C22C38/50 ,  B22F3/24 ,  B22F1/00 ,  G21C7/10 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B22F3/15 ,  C22C38/48

CPC classification number: C22C38/50 ,  B22F1/00 ,  B22F1/0011 ,  B22F3/15 ,  B22F3/24 ,  B22F2003/247 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/48 ,  G21C7/10 ,  G21D1/00

Abstract: An object of the present invention is to provide austenitic stainless steel having a high strength and high corrosion resistance while improving resistance to irradiation and reducing irradiation-induced stress corrosion cracking. A solution is as follows. Austenitic stainless steel of the present invention contains Cr: 16 to 26%, Ni: 8 to 22%, O: 0.02 to 0.4%, C: 0.08% or less, and N: 0.1% or less by weight, and further contains at least one kind of Zr: 0.2 to 2.8%, Ta: 0.4 to 5. 0%, and Ti: 0.2 to 2.6%, the balance being Fe and unavoidable impurities, wherein Zr, Ta, and Ti are precipitated as precipitates of one or more kinds of oxide particles, carbide particles, nitride particles, and composite particles thereof.