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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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 24; no. 7; pp. 2295 - 2300
Main Author 顾刚 叶凌英 蒋海春 孙大翔 张盼 张新明
Format Journal Article
LanguageEnglish
Published 2014
Subjects
2519A铝合金
T916形变热处理工艺
力学性能
微观组织
抗弹性能
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ISSN1003-6326

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Bibliography:43-1239/TG
2519A aluminum alloy; T916 thermo-mechanical treatment; mechanical properties; microstructure; ballistic resistance
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.
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）
ISSN:1003-6326