轻工机械2011，Vol.29Issue(4)：21-25,5.DOI:10.3969/j.issn.1005-2895.2011.04.006
双级时效工艺对7050铝合金组织与性能的影响
Effect of Two-stage of Aging Processing on Microstructure and Properties of 7050 Aluminum Alloy
摘要
Abstract
The two-stage long-term aging of 7050 aluminum alloy in the process of age-hardening properties and microstructure were studied by hardness test, tensile test, X-ray diffraction phase and scanning electron microscopy(SEM). The results show that two-stage long-term aging of 7050 aluminum alloy both of hardness and strength properties have double peaks, and the hardness and strengh of second peak are slightly higher than the first peak's. The relation model between the hardness with aging time and aging of the structure from melting has been established with the F-R source movement critical shear stress theory and explain the strengthen mechanism of second-phase particles in the second peak of the 7050 aluminum alloy.关键词
金相分析/7050铝合金/双级“双峰”/时效硬化特性Key words
metallographic analysis/7050 aluminum alloy/two-stage "double peak" /age-hardening properties分类
矿业与冶金引用本文复制引用
任建平,宋仁国..双级时效工艺对7050铝合金组织与性能的影响[J].轻工机械,2011,29(4):21-25,5.基金项目
国家自然科学基金资助项目(50771093) （50771093）
