Elastic modulus of Al–Si/SiC metal matrix composites as a function of volume fraction

Abstract

Aluminum alloy matrix composites have emerged as candidate materials for electronic packaging applications in the field of aerospace semiconductor electronics. Composites prepared by the pressureless infiltration technique with high volume fractions in the range 0.41–0.70 were studied using ultrasonic velocity measurements. For different volume fractions of SiC, the longitudinal velocity and shear velocity were found to be in the range of 7600–9300 m s−1 and 4400–5500 m s−1, respectively. The elastic moduli of the composites were determined from ultrasonic velocities and were analysed as a function of the volume fraction of the reinforcement. The observed variation is discussed in the context of existing theoretical models for the effective elastic moduli of two-phase systems.

Thermal evolution behavior and fluid dynamics during laser additive manufacturing of Al-based nanocomposites: Underlying role of reinforcement weight fraction

“…Thermal evolution behavior and fluid dynamics during laser additive manufacturing of Al-based nanocomposites: Underlying role of reinforcement weight fraction Dongdong Gu 1,2,a) In this study, a three-dimensional transient computational fluid dynamics model was established to investigate the influence of reinforcement weight fraction on thermal evolution behavior and fluid dynamics during selective laser melting (SLM) additive manufacturing of TiC/AlSi10Mg nanocomposites. The powder-to-solid transition and nonlinear variation of thermal physical properties of as-used materials were considered in the numerical model, using the Gaussian distributed volumetric heat source.…”

Simulation on the Effect of Porosity in the Elastic Modulus of SiC Particle Reinforced Al Matrix Composites

“…Therefore, at low volume reinforcement content, the particle shape has little effect on the elastic modulus of the composite. Figure 6 also shows the comparison between H-S bounds on Young's modulus for the Al/SiC system with data from various Al/SiC MMCs experimental results [32][33][34][35][36][37] and the numerical data obtained in this study. In the plot, the gathered experimental data-as well as the numerical predictions on the Young's modulus of the composite-lies near the lower bound of the H-S model.…”

“…), experimental data [32][33][34][35][36][37], numerical data (square The SiC square or angular particle reinforced Al matrix composites endure more load than reinforced with SiC round particles as shown in Figure 7. This plot shows the stress ratio (stress in the particle and the stress in the matrix, It is considered that the composite remains elastic independently of the applied load [31].…”

“…Effect of reinforcement content on the elastic modulus of Al-SiC composite. H-S bounds ( ), experimental data[32][33][34][35][36][37], numerical data (square , circle ) and V-R bounds ( ).…”

Influence of the Micromechanics Models and Volume Fraction Distribution on the Overall Behavior of SiC/Al Functionally Graded Pressurized Cylinders

“…The next step on the development of the UMATs was to implement the various homogenization schemes discussed in this study. In order to establish a baseline for comparison among all models, several experimental studies on Al/SiC MMCs (Premkumar et al, 1992;Liaw et al 1995;El-Eskandarany 1998;Santhosh Kumar et al 2009;Upadhyay and Singh 2012;Qu, Lou, and Li 2016) along with data from various Al/SiC MMCs manufacturers' datasheets (MATWEB 2018), were compiled and presented in Figure 4. The studies encompassed various volume fractions of SiC ranging from 0% to a little over 70%.…”