许晓静,朱金鑫,杨帆,丁清,汪成松,黄晶

• 1:江苏大学先进制造与现代装备技术工程研究院

摘要(Abstract)：

采用拉伸试验、X射线衍射分析(XRD)、电子背散射衍射分析(EBSD)、晶间腐蚀试验和剥落腐蚀试验等方法,研究了压缩大变形(20%压缩、45%压缩)对7085铝合金固溶-时效组织性能的影响。结果表明:压缩大变形能提高合金的拉伸强度(从440.9 MPa分别提升到481.2 MPa和514.5 MPa),显著细化晶粒尺寸(平均晶粒尺寸从31.580μm分别降低到7.414μm和6.469μm),压缩大变形还能提高合金的抗晶间腐蚀性能和抗剥落腐蚀性能,定量分析显示,压缩大变形处理显著提高了位错强化和小角度强化的总强化。

关键词(KeyWords)： 7085铝合金;压缩大变形量;屈服强度;位错强化;小角度晶界强化

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);; 江苏省高校研究生科研创新计划项目(CXLX12_0620)

作者(Author): 许晓静,朱金鑫,杨帆,丁清,汪成松,黄晶

DOI: 10.13289/j.issn.1009-6264.2016.12.007

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