Effects of strain rate and SiC particle on the compressive property of SiCp/AlSi9Mg composite foams
Effects of strain rate and SiC particle on the compressive property of SiCp/AlSi9Mg composite foams
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DOI：
10.1016/j.msea.2007.11.025
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发表时间：
2008-07
期刊：
影响因子：
6.4
通讯作者：
Sirong Yu;Yanru Luo;Jiaan Liu
中科院分区：
文献类型：
--
作者：
Sirong Yu;Yanru Luo;Jiaan Liu
以CaCO 3为发泡剂，采用熔体直接发泡法制备了SiC颗粒增强AlSi 9 Mg复合泡沫（SiCp/AlSi 9 Mg复合泡沫）。利用CMT 5205电子万能试验机和分离式霍普金森压杆系统分别研究了复合泡沫材料的静态和动态压缩行为。实验结果表明：SiCp/AlSi 9 Mg复合泡沫材料的屈服应力随应变速率的增加而增大，在高应变速率压缩过程中发生应变硬化，SiCp/AlSi 9 Mg复合泡沫材料比Al和Al合金泡沫材料对应变速率更敏感。不同SiC颗粒体积分数的SiCp/AlSi 9 Mg泡沫复合材料在高应变速率下的屈服应力随SiC颗粒体积分数的增加而增大。
The AlSi9Mg composite foams reinforced by SiC particles (SiCp/AlSi9Mg composite foams) were fabricated with the direct foaming route of melt using CaCO3blowing agent. The static and dynamic compressive behaviors of the composite foams were investigated utilizing CMT5205 electron universal testing machine and a Split Hopkinson Pressure Bar system, respectively. The experimental results show that the yield stress of SiCp/AlSi9Mg composite foams increases with increasing strain rate, the strain hardening occurs during the compression at high strain rate, and SiCp/AlSi9Mg composite foams is more sensitive to the strain rate than Al and Al alloy foams. The yield stress of SiCp/AlSi9Mg composite foams with different volume fractions of SiC particles at high strain rate increases with the increase of the volume fraction of SiC particles.