采用慢应变速率试验(SSRT),在模拟压水堆核电厂高温高压水环境(325℃、15.5 MPa)中,研究了溶解氧(DO)、氯离子和处理方式对316L不锈钢(SS)的应力腐蚀开裂(SCC)倾向的影响规律,并观察了试样断口形貌.结果表明,冷变形和固溶处理的316L不锈钢分别在含0 μg/kg DO+0 μg/kg Cl-,200 μg/kgDO+0 μg/kg Cl-,0 μg/kgDO+30 μg/kg Cl及200 μg/kgDO+30 μg/kg Cl-的高温水环境中都呈现出了不同程度的SCC倾向,且200 μg/kgDO和30 μg/kg Cl-使SCC倾向更为明显.同时,冷变形可大大提高316L不锈钢的屈服强度,但是也提高了SCC敏感性.
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