摘要:某石化公司的Inconel 800合金波纹管在临时停工后产生裂纹,通过化学成分分析、宏观和微观形貌观察、扫描电镜及能谱分析、透射电镜观察等方法对裂纹产生的原因进行了分析。结果表明:由于波纹管在使用过程中发生敏化现象,且停工期间处于连多硫酸介质中,从而发生了晶间腐蚀,所产生的微裂纹为裂纹源;在应力作用下,微裂纹扩展并导致应力腐蚀裂纹的形成。
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