铝合金材料AA-6061-T6和AA-6061-OA的动态拉伸力学性能(英文)

Dynamic Tensile Deformation of Aluminum Alloy 6061-T6 and 6061-OA

铝合金材料蜂窝夹层板结构具有在较低体重情况下的高硬度和高抗冲击性能力。近年来许多关于其在低应变率下冲击能量吸收性质的文献纷纷涌现,但是对于其在高应变率下的能量吸收力学性能的研究却非常贫乏。为了更好地研究铝合金材料蜂窝夹层板结构在高应变率下的能量吸收力学性能,其结构组成材料本身的动态力学性能必须首先得到充分研究。本文介绍和总结了铝合金材料AA-6061的两种热处理成品,T6与OA,在室温(24℃)与低温( -170℃)下的动态拉伸力学性能。在本研究中,霍普金生拉伸杆被应用,拉伸应变率为103每秒。

Aluminum-based sandwich panels with textile cores possess high stiffness and strength at low weight. Recent works have documented the energy absorbing characteristics of these materials at low strain rates. However, very little information exists on the energy absorption of these structures at high strain rates. In order to address this, the behavior of their individual constituents over a range of strain rates is first needed. In this paper the quasi- static and dynamic tension deformation behaviors of aluminum alloy 6061 in two different heat treatments -- T6 and over-aged （OA） -- are reported at both room and low test temperatures.