Study of Dry Wear Behavior and Resistance in Samples of a Horizontally Solidified and T6/Heat-Treated Automotive AlSiMg Alloy

Solidification and Heat-treatment Conditions Affecting the Tensile Properties and Fracture Feature of an Automotive AlSiMg Alloy

“…Experimental temperature curves were obtained and used to determine the solidi cation thermal parameters, such as growth and cooling rates (V L and T R , respectively). Additional details on the operational procedures of the experiments can be consulted in our recently published works [6,19,[21][22][23].…”

“…Recent studies reported that the microstructure scale of as-cast ingots directional solidi ed has effects on heat treatment parameters, and plays a crucial role in the extent of morphological transition of the undissolved phases from acicular to spheroidized in aluminum alloys [17,18]. In a previous works published by the authors regarding AlSiMg automotive alloy subjected to T6-heat treatment, were stated that spheroidized-like eutectic Si particles and Chinese script iron-rich phase were favored after heat treatment in re ned microstructure scale conditions, resulting in different behaviors between as-cast and HT samples subjected to responses to microhardness and wear resistance [6,19].…”

“…In this step, the in uence of the thermal solidi cation parameters, such as growth and cooling rates on the length of the dendritic microstructure as well as on the size, distribution and morphology of the Mg 2 Si/Fe intermetallic compounds (ICMs) and, in turn, on the hardness and tensile properties were investigated. In a second stage [6, 19,24], T6 heat treatment under different conditions has been applied to the as-cast samples resulting from the work of References [20][21][22][23].…”

“…More recently, comparative studies on solidi cation and T6-heat treatment conditions in Al-7Si-xMg (wt.%) cast aluminum alloys have been carried out [6,18,19,24]. Barbosa et al [6] and Azevedo et al [19] analyzed the interrelation between the horizontal solidi cation and treatment processes parameters on the microhardness and wear performance from the work of References [22,23].…”

“…More recently, comparative studies on solidi cation and T6-heat treatment conditions in Al-7Si-xMg (wt.%) cast aluminum alloys have been carried out [6,18,19,24]. Barbosa et al [6] and Azevedo et al [19] analyzed the interrelation between the horizontal solidi cation and treatment processes parameters on the microhardness and wear performance from the work of References [22,23]. Chen et al [24] developed investigations to analyze the in uence of Mg composition and heat treatment conditions on the mechanical properties of Al-7Si-xMg cast aluminum alloys (x ≅ 0.26, 0.4 and 0.58 wt.%).…”