The effect of shock-loading on the aging behavior of an Al-Mg-Si alloy

被引：0
作者：
R. S. Yassar
M. Cai
D. P. Field
X. Chen
J. Asay
机构：
[1] Washington State University,School of Mechanical and Materials Engineering
[2] Washington State University,Physics department
[3] Washington State University,Institute of Shock Physics
来源：
Journal of Materials Science | 2006年 / 41卷
关键词：
Polymer; Precipitation; Electron Microscopy; Mechanical Property; Transmission Electron Microscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The impact of pre-shock loading on the precipitation reactions in an Al-Mg-Si alloy (AA6022) was studied by means of differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and hardness measurements. The samples were solutionized and quenched in water prior to subsequent shock-loading and aging treatment. The TEM and DSC results show that, while shock-loading prior to aging facilitated the precipitation of Q ′ and β, no significant effect on β′′ precipitates was observed. The hardness studies indicate that pre-shock loading strengthens the material by forming a high concentration of microstructural defects, however the resultant mechanical properties of the shocked sample are comparable to those without shock processing at the peak of aging. It was found that the rate of overaging is higher in shocked samples, which is in agreement with the DSC and TEM results.
引用
收藏
页码：1711 / 1720
页数：9
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