中文摘要：

在高温水环境中，采用慢应变速率拉伸实验方法研究了温度对316L不锈钢应力腐蚀开裂的影响规律，并通过扫描电镜（SEM）对试样断口形貌进行分析．结果表明：在高温水环境中，温度为200～345℃时316L不锈钢具有应力腐蚀开裂敏感性；材料脆性指标随温度升高而增大，应力腐蚀开裂敏感性增强，断口分析与之吻合；250℃是316L不锈钢发生应力腐蚀开裂的敏感温度，断口边缘形貌呈现明显脆性断裂特征．

英文摘要：

The effect of temperature on stress corrosion cracking （SCC） of 316L stainless steel in high-temperature water was investigated using slow strain rate tests. The fracture morphology of 316 L stainless steel SCC specimens were analyzed with the aid of SEM. The strain-stress results showed that 316 L stainless steel exhibited SCC sensitivity in high-temperature water from 200 ℃to 345 ℃, and its brittlement increased with increase temperature, indicating that the SCC sensitivity of 316 L stainless steel was raised. The fractography analysis results also proved this susceptibility clearly. The SCC sensitive temperature of 316 L stainless steel is 250 ℃, at which the edge fractography morphology of the specimens presented brittle fracture characteristics.