Title:
CRYOGENIC STEEL AND HEAT TREATMENT PROCESS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/126862
Kind Code:
A1
Abstract:
Provided is cryogenic steel. The cryogenic steel is composed of the following elements in percentage by mass: 0.005%-0.015% of C, 1.5%-4.5% of Ni, 5.0%-10.0% of Mn, 1.0%-3.0% of Al, 1.5%-3.0% of Cu, less than or equal to 0.004% of S, less than or equal to 0.003% of P, 0.003%-0.005% of N, 0.0005%-0.001% of O, 0.0005-0.005% of Ca and the balance being Fe. Further provided is a heat treatment process for the cryogenic steel. By means of the cryogenic steel and the heat treatment process thereof provided in the present invention, nickel-saving and nanoprecipitation-strengthened cryogenic steel with high low-temperature plasticity and toughness can be obtained, the application cost is low, cold deformation treatment is not required, the heat treatment process is simple, and has high economic applicability.
Inventors:
LI WEI (CN)
JIN XUEJUN (CN)
LI YONG (CN)
JIN XUEJUN (CN)
LI YONG (CN)
Application Number:
PCT/CN2021/078443
Publication Date:
June 23, 2022
Filing Date:
March 01, 2021
Export Citation:
Assignee:
UNIV SHANGHAI JIAOTONG (CN)
International Classes:
C22C38/06; C21D1/20; C21D6/00; C22C33/04; C22C38/04; C22C38/08; C22C38/16
Domestic Patent References:
| WO2020128579A1 | 2020-06-25 |
Foreign References:
| CN107699803A | 2018-02-16 | |||
| CN105648314A | 2016-06-08 | |||
| CN104928592A | 2015-09-23 | |||
| CN103160730A | 2013-06-19 | |||
| JPS57181366A | 1982-11-08 | |||
| JP2008031553A | 2008-02-14 |
Other References:
LI YONG; LI WEI; MIN NA; LIU WENQING; ZHANG CAIYI; JIN XUEJUN: "Mechanical response of a medium manganese steel with encapsulated austenite", SCRIPTA MATERIALIA, vol. 178, 22 November 2019 (2019-11-22), NL , pages 211 - 217, XP086007557, ISSN: 1359-6462, DOI: 10.1016/j.scriptamat.2019.11.033
Attorney, Agent or Firm:
NANJING JIUZHI INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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