许晓静,吴桂潮,王彬,张福豹,罗勇,宋涛,成城,潘励,程晓农

• 1:江苏大学先进成形技术研究所

摘要(Abstract)：

对一种Sr微合金化的7085型铝合金的晶间腐蚀性能和剥落腐蚀性能进行了研究。结果表明,该合金经均匀化退火、热压缩变形加工、强化固溶(470℃×2 h+480℃×2 h+490℃×2 h)处理、冷水淬火、T6(120℃×24 h)时效处理后,具有很好的抗晶间腐蚀性能和抗剥落腐蚀性能,其抗腐蚀性能明显优于7075-T6合金。按GB 7998-2005(ASTM G110-1992)晶间腐蚀试验标准,该合金未发生晶间腐蚀,仅发生点蚀。按GB/T 22639-2008(ASTM G34-2001)剥落腐蚀试验标准,其剥落腐蚀等级为PA级。该合金所具有的优异抗腐蚀性能与其具有较低的合金元素总量(10.073%)、较高的w(Zn)/w(Mg)(4.97)比和w(Cu)/w(Mg)(1.06)比以及Zr和Sr的微合金化作用(细化组织、抑制再结晶)是一致的。

关键词(KeyWords)： 7085型铝合金;锶微合金化;晶间腐蚀;剥落腐蚀

Abstract:

Keywords:

基金项目(Foundation): 江苏省工业科技支撑计划项目(BE2008118);; 江苏大学拔尖人才基金(1211110001)

作者(Author): 许晓静,吴桂潮,王彬,张福豹,罗勇,宋涛,成城,潘励,程晓农

DOI: 10.13289/j.issn.1009-6264.2011.05.006

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