supported by the National Natural Science Foundation of China(Grant Nos.52071223 and 52007186);the National Key Research and Development Program of China(Grant Nos.2022YFA1603904 and 2022YFB3804003);the Key Program of the Chinese Academy of Sciences(Grant No.ZDRW-CN2021-2-4-1);the Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2020B1515120084 and 2021A1515110299);the Guangdong Province Youth Top Talent Program(Grant No.2021TQ06C118);the Scientific Instrument Developing Project of Chinese Academy of Sciences(Grant No.YJKYYQ20200070);the fund of the State Key Laboratory of Technologies in Space Cryogenic Propellants(Grant No.E2AWB10401).
We report the mechanical performance and microstructural characteristics of a Fe-Cr-Ni-Mn-N alloy at cryogenic temperatures.The exceptionally high yield strength of 1.5 GPa combined with a high strainhardening rate an...