Foaming of Al-Si by TiH2

被引:13
作者
Sarajan, Zohair [1 ]
Soltani, Mehrdad [2 ]
Khabushan, Jalal Kahani [2 ]
机构
[1] Islamic Azad Univ, Yazd Branch, Dept Mat Sci & Engn, Safaeeyeh, Yazd, Iran
[2] Shahid Sadughi Tech Sch, Dept Mat Engn, Yazd, Iran
关键词
Aluminum; Characterization; Density; Foaming; Structure; TiH2; TITANIUM HYDRIDE; HEAT-TREATMENT; ALUMINUM; TEMPERATURE;
D O I
10.1080/10426914.2011.551964
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Al-6wt%Si alloy foam was prepared by melt foaming method with the addition of titanium hydride as a blowing agent. The effect of thermal decomposition properties of titanium hydride on the alloy melt foaming behavior and the pores structure was studied. The result shows that the number of pores in the foam with stirring time t(s) of 60 to 150 sec is 120 to 220 per unit area (cm(-2)). At the temperature of 550 degrees C there is a uniform cell structure. The porosity of foamed Al-6wt%Si with TiH2 addition of 1.0wt% has been remarkably increased, and 1.0 to 1.5wt% provided a high uniformity of spherical porosity cell structure distribution besides having a favorable decrease in bulk density.
引用
收藏
页码:1293 / 1298
页数:6
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