Goudar, D M and Raju, K and Srivastava, V C and Rudrakshi, G B (2013) Effect of copper and iron on the wear properties of spray formed Al–28Si alloy. Materials & Design, 51 (IF-2.913). pp. 383-390.
Restricted to NML users only. Others may use ->
In the present study the effect of copper (Cu) and iron (Fe) on the wear behavior of spray formed Al–28Si alloy has been investigated. The spray formed Al–28Si alloy exhibited equiaxed grain morphology with ﬁne and uniform distribution of Si particles in Al matrix and spray formed Al–28Si–5Cu–4Fe alloy exhibited similar morphology with small needles of b-Al 4 FeSi intermetallics and globular shaped h-Al 2 Cu precipitates spread along the boundaries and junctions of grains. Hot pressing has considerably reduced the porosity in spray formed alloys. On the contrary the microstructure of as-cast Al–28Si alloy consisted of coarse primary and eutectic Si unevenly distributed in Al matrix and that of as-cast Al–28Si–5Cu–4Fe alloy consisted of coarse Si particles, long needles of b-Al 4 FeSi 2 and h-Al 2 Cu phases in Al matrix. Spray formed and hot pressed Al–28Si–5Cu–4Fe alloy exhibited higher value of hardness compared to the other alloys. The wear behavior of these alloys under dry sliding conditions showed that the spray formed and hot pressed Al–28Si–5Cu–4Fe alloy exhibited maximum wear resistance and minimum coefﬁcient of friction, while as-cast Al–28Si alloy showed minimum wear resistance and maximum coefﬁcient of friction over the entire range of loads. The high wear resistance of spray formed and hot pressed Al–28Si–5Cu–4Fe alloy is explained in light of its microstructural modiﬁcations induced during spray forming and the topography of worn surfaces.
|Uncontrolled Keywords:||Al-Mg2Si, spray forming, wear behaviour, heat treatment|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Dr. V.C. Srivastava|
|Deposited On:||08 Jul 2013 10:05|
|Last Modified:||08 Jul 2013 10:05|
Repository Staff Only: item control page