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AZ31D镁合金固溶处理组织的耐蚀性

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  • Key Words:AZ31D镁合金;;铸态;;固溶处理;;耐蚀性;;NaCl溶液

  • Abstract:用金相显微镜(OM)、扫描电镜(SEM)、能量分散谱仪(EDS)和X射线衍射仪(XRD)研究了AZ31D镁合金铸态和固溶组织的特征。为了揭示其腐蚀特征和机理,在NaCl溶液中进行了浸泡试验和极化腐蚀试验。结果显示:由于铸态组织成分不均匀和第二相晶界集中析出,在NaCl溶液中形成了梅花状腐蚀花纹;固溶组织在NaCl溶液中虽具点蚀特征,但耐蚀性仍优于铸态组织。

  • Volume:v.37;No.162

  • Issue:05

  • Translation or Not:no

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