摘要
分析了06Cr19Ni10奥氏体不锈钢产生晶间腐蚀的原理及影响奥氏体不锈钢晶间腐蚀的因素,介绍晶间腐蚀试验标准和常用试验方法,提出控制和减少奥氏体不锈钢晶间腐蚀的措施.氧化性的酸性腐蚀介质会加剧06Cr19Ni10奥氏体不锈钢晶间腐蚀;奥氏体不锈钢的敏化温度大约在427~816℃区间,其中对晶间腐蚀最敏感的温度是在650℃;晶间腐蚀的速度会随着奥氏体晶粒度的减小而减小;对晶间腐蚀影响最大的元素是碳元素.为此,合理调控化学组分,严格控制环境温度,进行固溶处理,控制晶粒度,提高其耐蚀性,降低由于晶间腐蚀导致的失效以及由此引发的安全事故.
This paper gives an introduction to the principles and the influencing factors affecting the inter-granular corrosion of 06Cr19Ni10 austenitic stainless steel and the testing standards and the commonly used testing methods,and then presents some measures to control and reduce the inter-granular corrosion of austenitic stainless steel.The Oxidation of acid corrosive medium will exacerbate the inter-granular corrosion of 06Cr19Ni10 austenitic stainless steel;the sensitization temperature of Austenitic stainless steel falls in the range from 427℃to 816℃,and the most sensitive temperature of inter-granular corrosion is at 650 ℃;the speed of inter-granular corrosion will decrease with the decrease of the austenitic grain size;Carbon is found to have a maximum impact in causing the inter-granular corrosion.Therefore,the reasonable control of the chemical composition,the strict control of the environment temperature,and the doing of solid solution treatment and the control of grain size so as to improve its corrosion resistance and reduction of the failure resulted from inter-granular corrosion are all crucial to avoid safety accidents.
出处
《内江师范学院学报》
2015年第4期18-20,38,共4页
Journal of Neijiang Normal University
关键词
奥氏体不锈钢
晶间腐蚀
影响因素
防控措施
austenitic stainless steel
inter-granular corrosion
influencing factors
the preventive and control measures
