基于液氢储运的超低温不锈钢微观组织演变与力学性能研究进展
RESEARCH PROGRESS OF MICROSTRUCTURE EVOLUTION AND MECHANICAL PROPERTIES OF ULTRA-LOW TEMPERATURE STAINLESS STEEL BASED ON LIQUID HYDROGEN STORAGE AND TRANSPORTATION
程旺军 1崔栋栋 2孙耀宁 2曾月2
作者信息
- 1. 新疆大学机械工程学院,乌鲁木齐 830017;新疆大学机械工程博士后科研流动站,乌鲁木齐 830017
- 2. 新疆大学机械工程学院,乌鲁木齐 830017
- 折叠
摘要
针对不锈钢在低温服役过程中面临高强低韧、低耐磨以及氢脆等一系列问题,阐述3种典型的氢脆理论,并分析不锈钢超低温下材料化学成分、应变量和应变速率等参量对其力学性能的影响规律,从微观角度明晰不锈钢超低温下的组织演变机制,揭示位错组态、滑移带、机械孪晶、奥氏体相、马氏体相的变化与力学性能改变的内在联系,对改善加工工艺、调控材料化学成分比例以及减小晶粒尺寸3种强化手段进行机理分析.最后介绍不锈钢在氢能储运领域中的典型应用以及未来发展趋势.
Abstract
The stainless steel faces a series of problems such as high strength、low toughness、low wear resistance and hydrogen embrittlement in the process of ultra-low temperature service.Three typical hydrogen embrittlement theories were described.The influence of chemical composition,deformation amount and strain rate on mechanical properties of stainless steel was analyzed at ultra-low temperature conditions.The mechanism of microstructure evolution of stainless steels was clarified at ultra-low temperature conditions.The interrelationship between microstructure and mechanical properties was revealed regarding dislocation configuration,slip band,mechanical twins,austenitic and martensitic phases.Moreover,the mechanism analyses were carried out by improving the processing technology,adjusting the chemical composition ratio,and reducing the grain size.Finally,typical application and future development of stainless steels were discussed in hydrogen energy storage and transportation.
关键词
氢能/液氢/不锈钢/力学性能/微观组织/马氏体相变/超低温Key words
hydrogen energy/liquid hydrogen/stainless steel/mechanical properties/microstructure/martensitic transformation/ultra-low temperature引用本文复制引用
基金项目
新疆维吾尔自治区自然科学基金(2022D01C653)
中国博士后科学基金面上项目(2022M722666)
新疆维吾尔自治区"天池英才"高层次人才项目(51052300536)
出版年
2024
NETL
NSTL
万方数据