张振强,许晓静,宋涛,王彬,张允康,罗勇,吴桂潮

• 1:江苏大学先进成形技术研究所

摘要(Abstract)：

采用金相显微镜、扫描电子显微镜和Х射线衍射仪显微分析技术,研究了强化固溶工艺对含Sr 2099(Al-2.52Cu-1.87Li-1.19Zn-0.497Mg-0.309Mn-0.0825Zr-0.0605Sr)型铝锂合金抗晶间腐蚀和抗剥落腐蚀性能的影响。结果表明:与常规固溶(540℃×2 h)+T8时效(121℃×14 h+151℃×48 h)工艺相比,强化固溶(540℃×2 h+550℃×2.67 h)+T8时效(121℃×14 h+151℃×48 h)工艺显著减少了合金中的粗大未溶相,再结晶程度提高,细化了晶粒,且促进等轴晶的形成。按晶间腐蚀标准(GB7998-2005)和剥落腐蚀标准(GB/T 22639-2008),强化固溶+T8时效工艺降低了该合金的抗晶间腐蚀能力,但显著提高了该合金的抗剥落腐蚀能力。

关键词(KeyWords)： Sr;2099铝锂合金;强化固溶;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);; 江苏大学拔尖人才培养工程基金(1211110001)

作者(Author): 张振强,许晓静,宋涛,王彬,张允康,罗勇,吴桂潮

DOI: 10.13289/j.issn.1009-6264.2012.08.018

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