外压型不锈钢波纹管膨胀节开裂分析
Physical Testing and Chemical Analysis(Part A:Physical Testing)(2011)
Abstract
奥氏体不锈钢外压轴向型波纹管膨胀节在使用较短时间后发生了开裂。采用化学成分分析、金相检验和断口分析等方法对开裂的原因进行了分析。结果表明:波纹管膨胀节的工作介质过热蒸汽中含有腐蚀性氯离子,在服役环境下受到拉伸应力的作用,导致其发生了应力腐蚀开裂。
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Key words
austenitic stainless steel,bellows expansion-joint,stress corrosion cracking
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