| 双峰时效对7075合金组织与性能的影响 |
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| 引用本文： | 陈小明, 宋仁国, 何源, 赵坚, 李红霞.双峰时效对7075合金组织与性能的影响[J].宇航材料工艺,2009,39(6). |
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| 作者姓名： | 陈小明 宋仁国 何源 赵坚 李红霞 |
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| 作者单位： | 浙江工业大学机械制造及自动化教育部重点实验室,杭州,310014 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用洛氏硬度计、显微硬度计、光学显微镜(OM)、电子拉伸试验机等技术对7075铝合金时效行为、力学性能及显微组织进行了系统研究.结果表明,7075合金的硬度及强度都具有时效双峰特征.两个时效峰的硬度和强度相差很小,在较低温度下时效第二峰的强度、硬度、塑性、韧性较高.
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| 关 键 词： | 7075合金 双峰时效 组织 性能 |
Effects of Double-Peak Aging on Microstructure and Properties of 7075 Alloy |
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| Chen Xiaoming,Song Renguo,He Yuan,Zhao Jian,Li Hongxia.Effects of Double-Peak Aging on Microstructure and Properties of 7075 Alloy[J].Aerospace Materials & Technology,2009,39(6). |
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| Authors: | Chen Xiaoming Song Renguo He Yuan Zhao Jian Li Hongxia |
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| Abstract: | The aging behavior,mechanical properties and microstructure of 7075 aluminum alloys after overlong aging were studied by means of Rochwell hardometer, microhardness tester, optical microscope (OM) and electronic tensile machine. The results show that the hardness, strength properties all have double peaks with almost the same values of hardness and strength. At lower temperature, the strength, hardness, plasticity and ductility of the alloy at the second ageing peak are higher than those at the first one. |
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| Keywords: | 7075 alloy Double-peak aging Microstructure Property |
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