Title:
STRONG AND DUCTILE MEDIUM MANGANESE STEEL AND METHOD OF MAKING
Document Type and Number:
WIPO Patent Application WO/2022/068201
Kind Code:
A1
Abstract:
An ultra-strong, ductile and cheap medium manganese steel comprises in percentage by mass: 8-12 wt. %Mn, 0.2-0.4 wt. %C, 1-3 wt. %Al, 0.05-0.39 wt. %V, and the balance of Fe. The manufacturing method of the ultra-strong and ductile medium manganese steel includes the steps of: (a) hot rolling an ingot at 900-1200℃ into a steel sheet (or plate, or bar); (b) air cooling or water quenching the steel sheet to room temperature or warm rolling temperature, (c) warm rolling the steel sheet at 350-750℃ with 30-60%thickness reduction; (d) air cooling or water quenched the steel sheet to room temperature; (e) annealing the steel sheet at 600-650℃ for 0-300 minutes and (f) air cooling or water quenched the sheet to room temperature.
Inventors:
HUANG MINGXIN (CN)
HUANG CHENGPENG (CN)
HUANG CHENGPENG (CN)
Application Number:
PCT/CN2021/091837
Publication Date:
April 07, 2022
Filing Date:
May 06, 2021
Export Citation:
Assignee:
UNIV HONG KONG (CN)
International Classes:
C21D8/02; C22C38/04; C22C38/02; C22C38/24
Domestic Patent References:
| WO2019134102A1 | 2019-07-11 |
Foreign References:
| CN105861933A | 2016-08-17 | |||
| CN104328360A | 2015-02-04 | |||
| CN104379791A | 2015-02-25 | |||
| CN109790611A | 2019-05-21 | |||
| CN104593675A | 2015-05-06 | |||
| EP2383353A2 | 2011-11-02 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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