| 7003铝合金时效双峰的组织与性能研究 |
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| 引用本文： | 何源,宋仁国,陈小明.7003铝合金时效双峰的组织与性能研究[J].轻合金加工技术,2011,39(1). |
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| 作者姓名： | 何源 宋仁国 陈小明 |
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| 作者单位： | 浙江工业大学,特种装备制造与先进加工技术教育部/浙江省重点实验室,浙江,杭州,310014 |
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| 基金项目： | 国家自然科学资助基金项目(50771093) |
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| 摘 要： | 采用洛氏硬度计(HRB)、透射电镜(TEM)、高分辨透射电镜(HRTEM)以及电子拉伸试验机等技术,对7003铝合金的时效行为、力学性能、显微组织、抗应力腐蚀性能等进行了系统的研究。结果表明,7003铝合金时效后的硬度、强度都出现时效双峰的现象,合金两个时效峰的硬度和强度差不多;但在393 K的长期时效制度下,时效第二峰时合金的强度、硬度、塑性、韧性、抗应力腐蚀性能都较第一时效峰的高;对应第一个峰值,合金的主要强化相是GP区;对应第二峰值,其主要强化相为η′(MgZn2)相。这两种相都能阻碍位错运动,对合金起到很好的强化作用。
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| 关 键 词： | 7003铝合金 时效双峰 析出相 |
Double peak properties and microstructure of double aged 7003 aluminum alloy |
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| HE Yuan,SONG Ren-guo,CHEN Xiao-ming.Double peak properties and microstructure of double aged 7003 aluminum alloy[J].Light Alloy Fabrication Technology,2011,39(1). |
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| Authors: | HE Yuan SONG Ren-guo CHEN Xiao-ming |
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| Affiliation: | HE Yuan,SONG Ren-guo,CHEN Xiao-ming(Key Laboratory of E&M(Zhejiang University of Technology),Ministry of Education & Zhejiang Province,Hangzhou 310014,China) |
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| Abstract: | The aging behavior,mechanical properties,microstructure and the stress corrosion resistance of 7003 aluminum alloy have been studied by means of Rockwell hardness tester(HRB),transmission electron microscope(TEM),high resolution transmission electron microscope(HRTEM) and electronic tensile strength stretcher.The results show that there are both hardness and strength double peaks appeared in the aged 7003 aluminum alloy.But there is not much different between the first peak and the second peak values.Howeve... |
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| Keywords: | 7003 aluminum alloy double-peaking aging precipitated phase |
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