Title:
HIGH-TOUGHNESS ULTRAHIGH-STRENGTH STEEL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/093119
Kind Code:
A1
Abstract:
The present application relates to the technical field of metal materials, and discloses a high-toughness ultrahigh-strength steel and a manufacturing method therefor, used for solving the problems that existing low-alloy ultrahigh-strength steel is poor in toughness and hardenability. The high-toughness ultrahigh-strength steel is prepared from the following elements in percentage by mass: C: 0.27％-0.35％; Si: 1.10％-1.70％; Mn: 0.70％-1.10％; Cr: 1.00％-1.40％; Ni: 0.10％-0.50％; Mo: 0.05％-0.50％; W: 0.05％-0.10％; Nb: 0.01％-0.04％; and the balance of iron and inevitable impurities. The steel of the present application is good in obdurability and hardenability.
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Inventors:
NING JING (CN)
SU JIE (CN)
YANG ZHUOYUE (CN)
GAO QI (CN)
DING YALI (CN)
CHEN JIAYAN (CN)
WANG AO (CN)
LIU GENG (CN)
SU JIE (CN)
YANG ZHUOYUE (CN)
GAO QI (CN)
DING YALI (CN)
CHEN JIAYAN (CN)
WANG AO (CN)
LIU GENG (CN)
Application Number:
PCT/CN2022/109923
Publication Date:
June 01, 2023
Filing Date:
August 03, 2022
Export Citation:
Assignee:
CENTRAL IRON & STEEL RES INST (CN)
International Classes:
C22C38/02; C21D1/18; C21D1/26; C21D1/28; C21D6/00; C21D8/00; C22C33/04; C22C38/04; C22C38/34; C22C38/44; C22C38/46; C22C38/48
Foreign References:
| CN114107821A | 2022-03-01 | |||
| CN106065455A | 2016-11-02 | |||
| CN101024870A | 2007-08-29 | |||
| US20210189517A1 | 2021-06-24 | |||
| JP2010125511A | 2010-06-10 |
Attorney, Agent or Firm:
BEIJING TIANDA INTELLECTUAL PROPERTY OFFICE (CN)
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