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客机排污口支架断裂失效分析

Hot Working Technology(2013)

Cited 23|Views9
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Abstract
运用外观检查、断口宏微观形态观察、微区能谱分析以及金相检查等技术手段对支架断裂情况进行分析。结果表明:后排污口支架的断裂性质为铝合金剥离晶间腐蚀失效,支架表面涂层局部受到破坏,裸露基体与污水直接接触是导致支架发生剥离腐蚀的直接原因;而短横方向的变形组织则降低了材料抗腐蚀能力。
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Key words
coating,exfoliation corrosion,fracture,aluminum alloy bracket
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