Fu Hengzhi

TL;DR: In this paper, the formation condition of high-entropy alloys with solid solution structure was investigated, and the results showed that only systems with δ ≥ 2.77 and Δ H ≥−8.8 kJ/mol will form high entropy alloy with simple solid solution.

TL;DR: In this paper, the ultrasonic vibration treatment was applied to the TiAl alloy melt during the solidification aiming at modifying the coarse microstructure and improving the mechanical properties of TiAl.

TL;DR: The ultrasonic refinement efficiency exponentially increases as the ultrasonic vibration time with a theoretic limit maximum value of Elim = 88% and the dominating refinement mechanism is the cavitation-enhanced nucleation rather than Cavitation-induced dendrite fragmentation.

TL;DR: In this article, a mathematical model of the centrifugal filling process was established, and the calculated results show that the center of gravity has an important influence on the filling process and the process of liquid flow and the location of free surface in sprue were simulated based on the Solution Algorithm-Volume of Fraction (SOLA-VOF) technique.

TL;DR: In this paper, heat transfer characteristics were investigated at different stages in cold crucible directional solidification (CCDS) and a dimensionless parameter K (axial-to-radial heat flux density ratio) was defined and used to characterize the direction of heat flux, the effects of the temperature gradient (G L ), the current frequency ( f ), and the pulling rate ( u ) were evaluated.