Al-5Ti-C master alloy was prepared and used to modify hypereutectic Al-20%Si alloy. The microstructure evolution and mechanical properties of hypereutectic Al-20%Si alloy with Al-5Ti-C master alloy additions (0, 0.4, 0.6, 1.0, 1.6 and 2.0 wt%) were investigated. The results show that, Al-5Ti-C master alloy (0.6 wt%, 10 min) can significantly refine both eutectic and primary Si of hypereutectic ...

Three types of Al-5Ti master alloys were synthesized by a method of thermal explosion reaction in pure molten aluminum. Performance comparison of Al-5Ti master alloy in grain refinement of commercial purity Al with different additions (0.6%, 1.0%, 1.6%, 2.0%, and 3.0%) and holding time (10, 30, 60 and 120 min) were investigated. The results show that Al-5Ti master alloy with blocky TiAl₃ partic...

The Al-5Cu alloys were prepared by different treatment methods, including adding a refiner Al-5Ti-1B, exerting rotating magnetic field (RMF), and compound of both RMF. effects methods on the microstructure, properties, solid solubility alloy investigated. optimal parameters addition amount confirmed experiment. Results show that either RMF or Al-5Ti-1B alone can refine grain size, refining effe...

To investigate the effect of rare earth on size and distribution TiB2 phase in aluminum alloy refiner, Al-5Ti-1B-RE master was fabricated, its microstructure constitutions were investigated by combination first principles calculations experimental investigation. The calculated results reveal that Ce has most effective modification ability due to positive adsorption energy largest charge transfe...

Modification mechanism and uniaxial fatigue properties of A356.2 alloy treated by Al-6Sr-7La traditional Al-5Ti-1B/Al-10Sr (hereinafter refers to alloy) were investigated constant stress amplitude method. Microstructure, dislocation Si twinning the alloys studied thermal analysis, scanning electron microscopy (SEM) transmission (TEM). The results showed that possesses better refining modificati...

In situ synchrotron X-radiography was carried out on Al–13Cu and Al–13Cu–7Si alloys with without addition of Al–5Ti–1B master alloy. The effects Si content grain growth the solute-suppressed nucleation zone (SSNZ) were quantitatively studied. average size can be refined to 164 ?m alloy inoculated by Al–5Ti–1B. After 7% content, a large number TiB2 sites in melt lost inoculating ability due “Si ...

Al-5Ti-B and Al-5Ti-B-Gd master alloy refiners were fabricated by fluorine salt casting method. The microstructure phase constitution of the alloys investigated scanning electron microscopy (SEM), transmission (TEM) X-ray diffraction (XRD). results show that Al-Ti-B refiner consists Al3Ti TiB2 phase. After Gd is introduced into intermediate alloy, Ti2Al20Gd appears in size significantly reduced...

This paper describes several models for enzyme mediated transport across a cell membrane. A standard Michaelis-Menten model (based on empirical descriptions) is compared to a deterministic model (based on the idealization of the plasma membrane as a tri-Iamellar structure) and to a stochastic model (having the additional assumption of compartmentation of the tri-Iamellar membrane). Lineweaver-B...

Abstract This paper studies the precipitation regularity of TiAl 3 compound in different temperature, holding time and cooling rate. Besides, this influence Al-5Ti-1B on mechanical properties 7050 alloy such as aluminum grain size, microstructure strength through changing amount Al-5Ti-1B. Through water cooling, solute Ti forms new fine compounds firstly. While natural is easy to grow up around...