应变强化对奥氏体不锈钢制压力容器应力腐蚀行为的影响
Effect of Cold-Stretching on Stress Corrosion Behavior of Austenitic Stainless Steel Pressure Vessel
DOI: 10.12677/MET.2020.95046, PDF,    科研立项经费支持
作者: 韩 豫, 周 微：宁波工程学院，浙江 宁波；张起侨：镇海石化工程股份有限公司，浙江 宁波
关键词: 奥氏体不锈钢；应变强化；应力腐蚀；残余应力；Austenitic Stainless Steel； Cold-Stretching； Stress Corrosion； Residual Stress
摘要: 将S30408奥氏体不锈钢制作成焊接试板，并对部分试板进行应变强化预处理。通过慢应变速率试验，研究应变强化前后S30408母材及焊接接头在高温氯离子环境下的应力腐蚀开裂敏感性。结果表明：母材试样的应力腐蚀敏感性随应变强化量的增加而增加，而应变强化后的焊接接头试样，由于塑性变形消除了焊接残余应力，因此没有表现出明显的应力腐蚀倾向。
Abstract: S30408 austenitic stainless steel was processed into welding test plates, and some of which were cold stretched. Through the slow strain rate test, the stress corrosion cracking (SCC) susceptibility of S30408 base metal and welded joints under high temperature chloride environment before and after cold stretching was studied. The results indicate that the SCC susceptibility of the base metal specimens increases with the increasing level of cold stretching, while the cold-stretched welded joint specimens have no obvious SCC tendency because the plastic deformation eliminates the weld-ing residual stress.
文章引用：韩豫, 周微, 张起侨. 应变强化对奥氏体不锈钢制压力容器应力腐蚀行为的影响[J]. 机械工程与技术, 2020, 9(5): 428-433. https://doi.org/10.12677/MET.2020.95046

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