Sliding wear of laser alloyed coatings on Al-12% Si

Laser surface alloying of aluminium with WC+Co+NiCr for improved wear resistance

“…The process has also been successfully applied for development of SiC, Al 2 O 3 , Cr 2 C 3 dispersed magnesium matrix composite in magnesium and SiC dispersion iron matrix composite on mild steel [4][5][6]. In the past, attempts have also been made to enhance the wear resistance of aluminum by surface alloying with Ni, Fe, Cu, Mo and Cr [7][8][9][10][11][12][13]. Attempts have also been made to improve wear resistance of aluminium by laser composite surfacing with silicon carbide and titanium carbide [14,15].…”

Laser cladding of MMC coatings on aluminium substrate: influence of composition and microstructure on mechanical properties

“…Several authors have already investigated the formation of intermetallic aluminium compounds (alloys AI-Ni [1,3], AI-Fe [8], AI-Cu [9,10], AI-Mo [11] and Al-Cr [12]) and the silicon precipitation in Al-Si alloys [13,14]. Another field of study have consisted in the development of metal matrix composites (MMC) coatings.…”

Optimization of Laser Cladding Process Using Taguchi and EM Methods for MMC Coating Production

“…Many studies on laser surface treatment have been carried out with the goal of improving the mechanical characteristics of cladded coatings (hardness, elastic modulus and wear resistance). These studies are done on steel [3][4], aluminium [5][6][7][8][9][10][11] and magnesium [12] substrates. Several authors have already investigated the formation of intermetallic compounds such as AlyXz(alloys AI-Ni [5], AIFe [6], AI-Cu [7], AI-Mo [8] and AI-Cr [9]) for aluminium treatment and MgyXz (alloys Mg-Al [12]) for magnesium treatment.…”