Title:
MARTENSITIC HEAT-RESISTANT STEEL FOR USE AT 630ºC OR MORE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/246465
Kind Code:
A1
Abstract:
Disclosed in the present invention are a martensitic heat-resistant steel for use at 630ºC or more and a preparation method therefor, which belong to the technical field of metal materials. The heat-resistant steel comprises, in percentages by mass: C: 0.01-0.14%, Si: 0.05-0.50%, Mn: 0.05-0.70%, Cr: 8.5-13%, W: 2.0-3.5%, Mo: 0.1-0.7%, Nb: 0.03-0.07%, V: 0.1-0.3%, Co: 2.8-5%, Cu: 0.8-1.5%, Ni: 0.1-0.5%, B: 0.01-0.015%, N: 0.01-0.08%, Ta: 0.2-0.5%, Zr: 0.1%-0.5%, and Ce + Y: 0.01-0.3%, with the balance being Fe and inevitable impurities. The heat-resistant steel of the present invention has good comprehensive performance.
Inventors:
ZHU LIN (CN)
HUO JIE (CN)
LI XIAO (CN)
CHEN CHU (CN)
GUO XIUBIN (CN)
YI PENGYUE (CN)
HUO JIE (CN)
LI XIAO (CN)
CHEN CHU (CN)
GUO XIUBIN (CN)
YI PENGYUE (CN)
Application Number:
PCT/CN2023/097809
Publication Date:
December 28, 2023
Filing Date:
June 01, 2023
Export Citation:
Assignee:
CHINA FIRST HEAVY INDUSTRIES (CN)
TIANJIN HEAVY EQUIP ENG RES CO (CN)
TIANJIN HEAVY EQUIP ENG RES CO (CN)
International Classes:
C22C38/02; C21D1/18; C21D1/28; C21D6/00; C21D8/06; C22C33/04; C22C38/04; C22C38/06; C22C38/42; C22C38/44; C22C38/46; C22C38/48; C22C38/50; C22C38/52; C22C38/54; C22C38/60
Foreign References:
| JPH1192881A | 1999-04-06 | |||
| CN114622133A | 2022-06-14 | |||
| JPH09184050A | 1997-07-15 | |||
| US4850187A | 1989-07-25 |
Attorney, Agent or Firm:
TALENT PATENT & TRADEMARK FIRM et al. (CN)
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