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温度对高温水中奥氏体不锈钢应力腐蚀开裂速率的影响
          
Effects of Temperature on Stress Corrosion Cracking of Austenitic Stainless Steels in High Temperature Water

摘    要
温度是影响核电站材料在高温水冷却剂中应力腐蚀开裂的关键参数之一。测试和分析了温度对不同外加应力水平下不同屈服强度奥氏体不锈钢在高温纯水中应力腐蚀开裂速率的影响。发现在110 ℃~288 ℃温度范围内,冷加工316L不锈钢的应力腐蚀开裂扩展速率为热激活过程。应力腐蚀开裂速率的表观活化能与温度区间、应力强度因子大小和屈服强度有关。分析了试验结果与文献报道的温度影响奥氏体不锈钢应力腐蚀开裂的几种类型和相关联的因素。
标    签 奥氏体不锈钢   应力腐蚀开裂   核电站   高温水   热激活能   Austenitic stainless steel   stress corrosion cracking   nuclear power plant   high temperature water   thermal activation energy  
 
Abstract
Temperature is one of the key factors for stress corrosion cracking (SCC) of nuclear power plant materials in high temperature water coolants. This paper analyzed the effects of temperature on SCC growth rates of austenitic stainless steels with different yield strengths at two stress intensity factors in high purity water. It was found that SCC growth rate was thermally activated from 110 to 288 ℃. The apparent thermal activation energy was affected by temperature range itself,stress intensity factor and yield strength. Experimental results and reported types of the temperature effect on SCC of austenitic stainless steels as well as correlated factors were analyzed.

中图分类号 172.8   DOI 10.11973/fsyfh-201509002

 
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所属栏目 试验研究

基金项目 上海市浦江人才计划(12PJ1403600);教育部博士点基金博导类项目(20123108110021);上海市科委国际科技合作项目(13520721200)

收稿日期 2014/9/6

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备注吕战鹏(1967-),研究员,博士,从事金属腐蚀与防护研究。

引用该论文: L Zhan-peng,CHEN Jun-jie. Effects of Temperature on Stress Corrosion Cracking of Austenitic Stainless Steels in High Temperature Water[J]. Corrosion & Protection, 2015, 36(9): 803


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