| T916形变热处理工艺对2519A铝合金组织、力学性能及抗弹性能的影响 |
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| 引用本文： | 顾刚,;叶凌英,;蒋海春,;孙大翔,;张盼,;张新明.T916形变热处理工艺对2519A铝合金组织、力学性能及抗弹性能的影响[J].中国有色金属学会会刊,2014,24(7):2295-2300. |
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| 作者姓名： | 顾刚 ;叶凌英 ;蒋海春 ;孙大翔 ;张盼 ;张新明 |
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| 作者单位： | [1]中南大学材料科学与工程学院,长沙410083; [2]中南大学有色金属材料科学与工程教育部重点实验室,长沙410083 |
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| 基金项目： | Project （2012CB619501） supported by the National Basic Research Program of China |
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| 摘 要： | 借助金相显微镜、透射电镜、拉伸测试、抗弹性能测试等手段研究T916新型形变热处理对2519A铝合金组织、力学性能和抗弹性能的影响。经T916工艺处理的2519A铝合金，其屈服强度、抗拉强度、伸长率分别达到501MPa、540MPa、14％。30mm厚的2519A-T916铝合金板材的极限穿透速度达715m／s。弹坑侧壁组织随着弹孔深度的变化而变化。T916热处理工艺中的断续时效阶段是2519A铝合金性能提升的关键。低温下的时效使得GP区变得密集，从而使得后续相的析出也变得更为密集、细小。
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| 关 键 词： | 2519A铝合金 T916形变热处理工艺 力学性能 微观组织 抗弹性能 |
| 收稿时间： | 17 October 2013 |
Effects of T916 thermo-mechanical process on microstructure,mechanical properties and ballistic resistance of 2519A aluminum alloy |
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| Gang GU,Ling-ying YE,Hai-chun JIANG,Da-xiang SUN,Pan ZHANG,Xin-ming ZHANG.Effects of T916 thermo-mechanical process on microstructure,mechanical properties and ballistic resistance of 2519A aluminum alloy[J].Transactions of Nonferrous Metals Society of China,2014,24(7):2295-2300. |
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| Authors: | Gang GU Ling-ying YE Hai-chun JIANG Da-xiang SUN Pan ZHANG Xin-ming ZHANG |
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| Affiliation: | Gang GU, Ling-ying YE, Hai-chun JIANG, Da-xiang SUN, Pan ZHANG, Xin-ming ZHANG( 1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. Key Laboratory of Nonferrous Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, China) |
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| Abstract: | The effects of T916 thermo-mechanical process on microstructures, mechanical properties and ballistic resistance of 2519A aluminum alloy were investigated by optical microscopy （OM）, transmission electron microscopy （TEM）, tensile tests and ballistic resistance test. After T916 treatment, the yield strength, tensile strength and elongation rate of 2519A aluminum alloy reach 501 MPa, 540 MPa and 14%, respectively. And the ballistic limit velocity of 2519A-T916 alloy （30 mm in thickness） is 715 rn/s. The microstructure varies near the sidewalls of crater. The interrupted ageing contributes to these excellent properties of the alloy. During T916 process, the precipitation of Guinier Preston （GP） zone is finer and denser during the interrupted ageing, thus resulting in well precipitated strengthening phase. |
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| Keywords: | 2519A aluminum alloy T916 thermo-mechanical treatment mechanical properties microstructure ballistic resistance |
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