Cryogenic mechanical properties and tribological behaviors of AISI stainless 316L steel cooled by liquid nitrogen

IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Cryogenics Pub Date : 2025-03-15 DOI:10.1016/j.cryogenics.2025.104058
Jimin Xu , Longgui He , Shuo Cheng , Xiaoliang Fang
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引用次数: 0

Abstract

The use of stainless steel instead of traditional aerospace-grade aluminum alloys and carbon fiber-reinforced polymers is promising to further reduce the launch cost of reusable rockets. In this study, the mechanical properties and tribological behaviors of AISI 316L stainless steel under cryogenic conditions were comprehensively investigated through experiments. Liquid nitrogen was employed to cool the samples and simulate the cryogenic fluid environment inside rockets for safety considerations. Tests of Rockwell hardness, tensile strength, dynamic toughness, falling-ball impact fatigue behaviors, and tribological behaviors under both room-temperature and cryogenic conditions were performed using commercial and self-developed devices. Compared with the test results at room temperature, 316L samples cooled by liquid nitrogen reveled higher hardness, greater tensile strength, enhanced impact fatigue resistance, and improved wear resistance. The improved performance of 316L under cryogenic conditions is beneficial for the application in liquid rocket. However, cryogenic dynamic toughness and impact fatigue tests demonstrates a reduction in the plasticity of 316L cooled by liquid nitrogen, which should be taken into consideration in engineering to avoid sudden failure.
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来源期刊
Cryogenics
Cryogenics 物理-热力学
CiteScore
3.80
自引率
9.50%
发文量
0
审稿时长
2.1 months
期刊介绍: Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics
期刊最新文献
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