Sensitivity analysis of mechanical properties and ductile/brittle behaviors in aluminum‐silicon alloy to loading rate and nano‐particles, considering interaction effects

Abstract

Aluminum‐silicon alloys have been widely used in automotive industries. To know mechanical properties of such materials is essential for engineers to have a superior design for components. Therefore, in this article, the sensitivity analysis of mechanical and fracture features in the aluminum alloy has been performed to find the effect of the loading rate and nano‐particles. For this objective, tensile tests were performed on casting standard specimens. Then, obtained experimental data were analyzed by the Minitab software, using the factorial method. In addition, the interaction between the effect of the loading rate and the addition of nano‐particles, on mechanical properties and ductile/brittle behaviors, was also investigated. Obtained results indicated that the yield stress, the elastic modulus and the elongation were sensitive to the interaction of both factors (the multiply of the nano‐particle addition and the loading rate). Besides, the fracture surface illustrated that by increasing the loading rate and the addition of nano‐particles, the brittleness of the material increased.

Bending cyclic behavior and scatter-band analysis of aluminum alloys under beneficial and detrimental conditions through high-cycle fatigue regime

“…These bending stress levels were 120, 150, 180, and 210 MPa. More details for the fabrication of the studied materials could be found in the literature by Aroo et al [1], Azadi et al [3], Rezanezhad et al [10], and Zolfaghari et al [11]. In addition, more details of fatigue testing and the geometry of standard cylindrical samples could be followed in the literature by Parast et al [12], Sharifi et al [13], and Khisheh et al [14].…”

“…Moreover, the improvement in the corrosion-fatigue lifetime of components is to be noticed in the automotive industry. Various ways to increase the service lifetime are heat treatments, in addition to the recent knowledge edge of nano-particles [3]. In this field of study, different articles have been widely published until now.…”

“…In the literature review, almost all works were presented through qualitative analysis. In only rare articles such as Azadi et al [3], the quantitative analysis was performed on fatigue and corrosion-fatigue phenomena of materials. Based on a claimed novelty in this research, the sensitivity analysis of the stress, the pre-corrosion, the addition of nano-particles, and the heat treatment was done on the fatigue lifetime of aluminum alloys.…”

Validation of Archimedes Method and Acid Dissolution Test for Volume Fraction Determination of Aluminum Alloy Composites Reinforced with Ceramic Particles

“…Combination of superior mechanical properties and higher strength to weight ratio are the attracting features of Metal Matrix Composites (MMCs) leading to engineering applications in various industries like aeronautical, automobile, aerospace and marine industries [1][2][3][4]. Recently the complex shaped products are produced by powder metallurgy technique using metal matrix composites as alternative options to the conventional alloys [5]. There are several interesting advantages of MMCs like possessing homogeneous mechanical properties, economical in cost and feasible processing techniques when compared to that of conventional engineering materials.…”