Effect of temperature on the indentation behavior of closed-cell aluminum foam

Effect of temperature on the indentation behavior of closed-cell aluminum foam
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温度对闭孔泡沫铝压痕行为的影响

DOI:
10.1016/j.msea.2012.04.062
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发表时间:
2012-07
影响因子:
6.4
通讯作者:
Tang LQ
Tang LQ
中科院分区:
材料科学1区
文献类型:
--
作者:
Li ZB;Zheng ZJ;Yu JL;Tang LQ

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采用平端和半端冲头对闭孔泡沫铝在不同温度下的深压痕响应进行了实验研究,并与单轴压缩下的深压痕响应进行了比较。横截面图显示,变形大致局限于压头直接下方的材料,尽管有轻微的横向扩散。塑性崩塌强度、撕裂能和能量吸收与温度有关。提出了考虑压痕深度效应和试验温度效应的撕裂能经验公式。
Deep indentation response of closed-cell aluminum foam under different temperatures was experimentally investigated by using flat-ended and hemispherical-ended punches and compared with that under uniaxial compression. Cross-sectional views show that the deformation is roughly confined to the material directly underneath the indenter though has slight lateral spread. The plastic collapse strength, tear energy and energy absorption are found to be temperature dependent. An empirical formula incorporating indentation depth effect and test temperature effect is presented for the tear energy.
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