Effects of T9I6 thermo-mechanical process on microstructure, mechanical properties and ballistic resistance of 2519A aluminum alloy

被引：14
|
作者：
Gu, Gang [1 ,2 ]
Ye, Ling-ying [1 ,2 ]
Jiang, Hai-chun [1 ,2 ]
Sun, Da-xiang [1 ,2 ]
Zhang, Pan [1 ,2 ]
Zhang, Xin-ming [1 ,2 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Cent S Univ, Key Lab Nonferrous Mat Sci & Engn, Minist Educ, Changsha 410083, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷 / 07期
关键词：
2519A aluminum alloy; T9I6 thermo-mechanical treatment; mechanical properties; microstructure; ballistic resistance; PRECIPITATION; PLATE;
D O I：
10.1016/S1003-6326(14)63347-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effects of T9I6 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 T9I6 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-T9I6 alloy (30 mm in thickness) is 715 m/s. The microstructure varies near the sidewalls of crater. The interrupted ageing contributes to these excellent properties of the alloy. During T9I6 process, the precipitation of Guinier Preston (GP) zone is finer and denser during the interrupted ageing, thus resulting in well precipitated strengthening phase.
引用
收藏
页码：2295 / 2300
页数：6
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