压力容器2026，Vol.43Issue(3)：15-24,10.DOI:10.3969/j.issn.1001-4837.2026.03.002
临氢爆破片用超高纯316L不锈钢材料洁净度研究
Research on the cleanliness of ultra-high purity 316L stainless steel material for hydrogen pressure rupture discs
摘要
Abstract
This study focuses on the application of expansion technology to rupture disc safety relief devices for high-pressure hydrogen storage vessels,using ultra-high purity(UHP)AISI 316L austenitic stainless steel.Internal inclusions act as hydrogen traps and corrosion initiation sites,directly influencing the material's susceptibility to hydrogen embrittlement as well as the triggering accuracy and reliability of the rupture disc.Currently,the industry lacks a systematic evaluation and comparison of cleanliness and inclusion control for such materials.In this study,a systematic quality assessment was carried out by comparing materials produced by different manufacturers using vacuum induction melting combined with vacuum arc remelting(Material A),as well as the argon-oxygen decarburization process followed by VAR(Material B).Innovatively,this study employed a combination of microscopic characterization techniques including metallographic microscopy,scanning electron microscopy,and energy-dispersive X-ray spectroscopy,coupled with thermodynamic calculations to simulate the evolution of inclusions during cooling.This approach revealed the characteristics and distribution patterns of inclusions resulting from different processes and sources.The results indicate that among the evaluated samples,Material B produced by China Factory A exhibited the best cleanliness,with both inclusion density and area fraction significantly lower than those of the other samples.This finding is in strong agreement with the thermodynamic simulation predictions,confirming the reliability of the adopted methodology.The results provide important guidance for the selection and process optimization of ultra-high purity 316L stainless steel used in critical hydrogen-containing rupture disc safety components,and also offer a reference framework for the quality assessment and control of similar high-cleanliness materials.关键词
超高纯316L不锈钢/临氢爆破片/非金属夹杂物/洁净度Key words
ultra-high purity 316L stainless steel/hydrogen-resistant rupture disc/non-metallic inclusions/cleanliness level分类
机械制造引用本文复制引用
杨超,骆辉,周忠警,江一凡..临氢爆破片用超高纯316L不锈钢材料洁净度研究[J].压力容器,2026,43(3):15-24,10.基金项目
国家重点研发计划(2021YFB4000803) （2021YFB4000803）
国家市场监督管理总局科技计划项目(2024MK212) （2024MK212）
