公开(公告)号：US11767574B2

公开(公告)日：2023-09-26

申请号：US17865670

申请日：2022-07-15

Applicant: Harbin Engineering University

Inventor： Zhongwu Zhang ,  Junpeng Li

IPC: C21D9/46 ,  C21D8/02 ,  C21D1/28 ,  C21D1/18 ,  C21D6/00 ,  C22C38/52 ,  C22C38/50 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC classification number: C21D9/46 ,  C21D1/18 ,  C21D1/28 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/50 ,  C22C38/52

Abstract: Disclosed is an ultrahigh-strength maraging stainless steel with multiphase strengthening and a preparation method thereof. The stainless steel has a composition in mass percentage as follows: 1.0-5.0% of Co, 6.0-10.0% of Ni, 11.0-17.0% of Cr, 0.3-2.0% of Ti, 3.0-7.0% of Mo, 0.08-1.0% of Mn, 0.08-0.5% of Si, 0.02% or less of C, 0.003% or less of P, 0.003% or less of S, and Fe as a balance.