Microstructure and microhardness of melt-spun Al–25Si–5Fe–XCo (X=0, 1, 3, 5) alloys

Effect of Si Addition on Microstructure and Tribological Properties of Al-0.1Mg-0.35Ni-(4, 6, 8, 10) wt %Si Alloy

“…In some cases, debris control transfers from the sample surface on the disc surface due to a difference in hardness. Figure 15 shows the hardness vs. wt % Si plot for Al-0.1Mg-0.35Ni- (4,6,8,10) wt %Si alloys in the aged condition. It is observed that the hardness increases linearly with an increase in the Si content.…”

“…The increasing YS with the increasing Si content in the aged condition are also due to the presence of intermediate phase Al 3 Ni. Figure 18 shows the %elongation vs. wt % Si plot for the Al-0.1Mg-0.35Ni- (4,6,8,10) wt %Si alloy combination in the aged condition. The %elongation does not vary significantly with the increasing Si content as observed from the Figure 18.…”

“…Wear rate results Figure 19 shows the wear rate vs. wt % Si plot for Al-0.1Mg-0.35Ni- (4,6,8,10) wt %Si alloys in the aged condition. The wear rate was found to decrease with the increasing Si content and this behaviour was attributed to the formation of an intermediate phase Al 3 Ni.…”

“…The effect of Co on the Al-Fe-Si alloy and found an increase in the hardness was observed after the Co addition [7]. The effect of Co addition on the Al-5Fe-25Si alloy by determining the micro hardness and an increase in the micro-hardness was observed after the Co addition upto 5 wt % [8]. The effect of Ti addition into Al-Mg alloy was studied [9] and they have observed an increased yield strength (YS) and tensile strength (UTS) for the alloy.…”

“…The hardness and tensile strength increased, wear rate decreases and the coefficient of friction CoF remained constant. Further, the impact of Si addition on the behaviour of the Al-0.1Mg-0.35Ni- (4,6,8,10) wt %Si is also evaluated in this study. Finally, it is concluded that the Si addition significantly improves of tribological properties of the Al-0.1Mg-0.35Ni-(4, 6, 8, 10) wt %Si alloy.…”