压缩变形对6063铝合金的变形特性和析出相粒子回溶的影响
许晓嫦,刘志义,党朋,于文斌,宁爱林
摘要(Abstract):
通过硬度测试、透射电镜图像和X射线衍射图谱分析,研究了6063铝合金在压缩变形过程中的显微组织和性能变化。结果表明:在压缩变形初期,6063铝合金在过饱和态,峰时效态和过时效态的硬度均呈近似直线上升,它们的硬化能力按下列顺序降低:峰时效、过饱和态、过时效。出现硬度下降后,压缩率则按上列顺序增大。强塑性变形过程中出现析出相析出和回溶有利于降低加工硬化引起的脆性。
关键词(KeyWords): 6063铝合金;强塑性变形;回溶;时效;压缩变形
基金项目(Foundation): 国家自然科学基金资助项目(50571069);; 湖南省自然科学基金资助项目(05JJ40005)
作者(Author): 许晓嫦,刘志义,党朋,于文斌,宁爱林
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