Published in Journal of Materials Engineering and Performance
The half-Heusler alloy TiNiSn is a promising material for high-temperature thermoelectric applications due to its good thermal stability and semiconductor-like electrical properties. Numerous synthesis techniques have been utilized to make TiNiSn, but a comparative study on its thermoelectric properties with respect to processing parameters has not...
Published in Journal of Materials Engineering and Performance
In this paper, the constitutive modeling and hot deformation behavior of SP-700 titanium alloy was investigated by performing isothermal hot compression tests in the temperature range of 700-950 °C and strain rates of 0.001, 0.1, and 1 s−1. The flow curves of the alloy indicated that the yield point phenomenon occurs at strain rates of 0.1 and 1 s−...
Published in Journal of Materials Engineering and Performance
A FeCrCuMnNi high-entropy alloy was produced using vacuum induction melting, starting from high-purity raw materials. The microstructure and mechanical properties of the as-cast FeCrCuMnNi alloy were studied, considering x-ray diffraction (XRD), scanning electron microscopy, and hardness and tensile tests. XRD results revealed the existence of two ...
Published in Journal of Materials Engineering and Performance
An experimental study is presented of ultra-fine coal fly ash (CFA) aluminum matrix composites produced by successive high-power ring milling of CFA, oscillating microgrid mixing of the CFA–aluminum melt, gravity casting and rapid cooling. Samples corresponding to different CFA concentrations and particle size distributions (1 μm average, or less) ...
Published in Journal of Materials Engineering and Performance
Ductile damage model has been widely regarded as a valuable method to predict the failure of sheet metal. Based on the thermodynamic theory and continuum damage mechanics, the fully coupled ductile damage model can be developed, which also can better predict the initiation and growth of the fracture. But the identifications of model parameters with...
Published in Journal of Materials Engineering and Performance
Contact tube wear is the bottleneck of industrial application for non-copper-coated solid wire. It is crucial that we understand the wear mechanism of contact tube so that we can decrease contact tube wear. The effects of temperature and heat input on contact tube wear were investigated in this work. The results demonstrated that fatigue peeling wa...
Published in Journal of Materials Engineering and Performance
In this study, the effects of compound modification with Bi and Sb and solution treatment on the microstructures evolution and the mechanical properties of Al-20 wt.% Mg2Si composites were investigated. The specimens were observed by optical microscope, scanning electron microscope equipped with an energy-dispersive spectrometer and x-ray diffracti...
Published in Journal of Materials Engineering and Performance
The multiscale model of pearlitic transformation, including the finite element solution of the second Fick’s equation with moving boundary in the microscale and Fourier equation in the macroscale, is presented in this paper. According to the mixed-mode approach, both the volume diffusion and the interface mobility were considered. Model describes s...
Published in Journal of Materials Engineering and Performance
Bulk hardness and tensile properties of an AA6063 Al-Mg-Si alloy specimens subjected to artificial age-hardening treatment over a wide range of temperatures (373-523 K) and time durations (5 min to 60 days) have been determined and analyzed to predict complete aging kinetics and yield strength. The predictions have been made using simplified hardne...
Published in Journal of Materials Engineering and Performance
In this paper a systematic study has been undertaken to study the effect of forging on microstructure, mechanical properties and acoustic emission (AE) characteristics of Al alloy (2014)—10 wt.% SiC metal-matrix composites. Hammer forging was carried out at a temperature of 470 °C in an open die, with a deformation ratio of 3.5:1. Microstructural a...
