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In contrast to the description provided by Archard’s equation, material loss under a wearing force is more or less nonlinear. Excluding the wear regime transition and other possible factors such as oxidation, this nonlinear relationship may result from variations in the mechanical behavior of materials such as strain hardening. Although this is a classic topic, relevant issues have still not been...
The effect of the roasting characteristics of vanadium-rich slag on its vanadium leaching behavior was investigated to enable its effective utilization. Thermodynamic analysis of the sodium roasting of vanadium-rich slag was performed for the first time. The effect of the roasting temperature, roasting time, quantity of sodium carbonate (Na2CO3) added, and particle size of the raw material on the...
An icosahedral quasicrystal phase (I-phase)-containing Mg-8Sn-6Zn-2(wt.%)Al (TZA862) alloy was subjected to ECAP and subsequent double aging. Thereafter, the age-hardening microstructure and tensile properties of the as-ECAPed TZA862 alloy were investigated. The results indicated that the grain size, fraction and orientation of the precipitates as well as the texture were affected by the double-aging...
To improve the mechanical properties of hot-deformed Nd-Fe-B magnets, anisotropic Nd-Fe-B magnets doped with SiC whiskers were fabricated by hot-pressing and hot-deformation processes. The influence of the SiC whiskers on the microstructure and magnetic and mechanical properties of the Nd-Fe-B magnets was investigated. The bending strength of the hot-deformed Nd-Fe-B magnets reinforced with SiC whiskers...
Casting dies made of tool steel are subject to impact, abrasion, and cyclic thermo-mechanical loading that can result in damage such as wear, corrosion, and cracking. To repair these defects, materials enveloping the defects need to be machined off and then refilled. In this study, V-shaped defects with varied sidewall inclination angles were prepared on H13 tool steel substrates and refilled with...
The influence of V2O5 content on the gas-based direct reduction of Hongge vanadium titanomagnetite pellets (HVTMP) was investigated with simulated shaft furnace gases, and the content levels were selected as 0 wt.%, 2 wt.%, 4 wt.%, and 6 wt.%, respectively. The results indicated that, with the increase of V2O5 content, the reduction was accelerated at an early stage due to the increase of the original...
Transient temperature history is vital in direct laser deposition (DLD) as it reveals the cooling rate at specific temperatures. Cooling rate directly relates to phase transformation and types of microstructure formed in deposits. In this paper, finite element analysis simulation was employed to study the transient temperature history and cooling rate at different experimental setups in the Ti–48Al–2Cr–2Nb...
In this work, a process of vacuum carbothermal reduction was proposed for treating tin anode slime containing antimony and lead. During vacuum carbothermal reduction, the antimony and lead were selectively removed simultaneously by reducing and decomposing the less volatile mixed oxide of lead and antimony into the more volatile Sb2O3 and PbO. Then the tin was enriched in the distilland and primarily...
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