Abstract

In the present work, 6061 Al-B_4C sintered composites containing different B_4C contents were fabricated and their characteristic were investigated as a function of sintering temperature. For this, composite powders and their compacts with B_4C various contents from 0 to 40 wt.% were fabricated using a planetary ball milling equipment and cold isostatic pressing, respectively, and then they were sintered in the temperature ranges of 580 to 660°C. Above sintering temperature of 640°C, real density was decreased due to the occurrence of sweat phenomena. In addition, it was realized that sinterability of 6061Al-B_4C composite material was lowered with increasing B_4C content, resulting in the decrease in its real density and at the same time in the increment of porosity.

• Keywords: 6061Al-B_4C composite;Sintering characteristic;B_4C content;