Selection of temper and Mg content to optimise the Quality Index of Al-7Si-Mg casting alloys

Influences of alloying elements, solution treatment time and quenching media on quality indices of 413-type Al–Si casting alloys

“…The concept expressed in Eq. (1) has the drawback of lacking the proper theoretical background or physical meaning which was covered by Cáceres and co-workers [20][21][22][23][24]. Cáceres defined a relative quality index q = E f /E * which expresses the ratio of the engineering strain at failure (E f ) and the engineering strain at the onset of necking (E * ); accordingly, the samples which fracture before the onset of necking will be of a lesser quality than those which fracture at or beyond the onset of necking.…”

“…Furthermore, these quality maps may be used to select the most favorable processing conditions for castings so as to obtain the highest quality and the best mechanical properties possible, including alternative heat treatment procedures, the addition of alloying elements, and changes in solidification conditions. It should be noted that the quality charts concept was used as a selection tool for engineering materials in several studies [19,20,[23][24][25][28][29][30][31][32][33].…”

On the characteristics of automotive low arm-suspension system parts made of aluminum casting alloys

“…These different types of hardening phase result in a wide variation in the strength coefficient values K of the heat-treated materials through the T6 temper parameters. 20,21 Based on the required tensile properties, the quality requirements and the cost, several metallurgical parameters may be selected among these, namely the 357 and 354 alloys investigated and heat treatment times, the most suitable parameters for a specific automotive engineering application especially for suspension system parts. Regarding design and materials selection for automotive parts, the 357-type aluminium alloys show better quality (strength and ductility) index values than 354-type alloys.…”

Effects of aging parameters on the quality of 413-type commercial alloys

“…It should be noted that the quality indices and the quality chart concept were used as a selection tool to recommend the optimum heat treatment and aging procedures for aluminum alloys such as A356 and A357 casting alloys [8,[23][24][25], and A201 Al-Cu castings [26]. However, to the best of our knowledge, the evaluation of the heat treatment procedures for 413-type casting alloys using this concept has not been investigated in the literature except for an earlier publication by the authors reported in [17].…”