Investigation of Friction and Dry Sliding Wear Behaviors of Al6063/SiC Metal Matrix Composite
摘要
In the present article, an attempt has been made to develop a conventional low-cost method of producing aluminum–silicon carbide (Al-SiC) metal matrix composite (MMC) and investigate the influence of percentage variation, applied load, and sliding distance on the dry sliding wear of Al-SiC MMC. Here, five different composition samples of Al-SiC composites with varying weight fractions of SiC (i.e., 5, 10, 15, 20, and 25%) were prepared using the stir-casting technique. Al6063 and SiC powder (400 grit size) were used to prepare the samples. Then the dry sliding wear tests on prepared samples were carried out using a Pin-on-Disk wear test rate with normal loads of 10, 20, and 30 N at a constant sliding velocity of 3.769 m/s and varying sliding distances of 1131, 2262, and 3393 m. Wear loss, wear rate, and the coefficient of friction (CoF) were measured in the wear test. Taguchi method was used to optimize the process parameters leading to minimum wear rate and CoF. It was observed that the addition of SiC up to 15% improves the wear behavior, but the addition of SiC above 15% increases the wear rate. Furthermore, it was observed from the ANOVA analysis that the applied load (41.93%) has the greatest influence on the wear rate of samples, while the percentage of SiC (72.91%) has the greatest influence on the CoF of samples.