WebFeb 28, 2024 · When the best refinement effect is achieved (Zr content is 0.4 mass%), the increase in nucleation temperature tends to level off. When the Zr content is lower than 0.4 mass%, Tmin and TG,α increase with the increase of Zr content, and TG,α is greater than Tmin. There is a recalescence phenomenon. WebIt was clarified that Zr solutes have synergistic effects in improving the mechanical properties of Ti alloys by both grain refinement and solid-solution phenomena. Furthermore, the Zr solution behavior in the powder metallurgy Ti-4 wt.% Fe alloy, which is one of the α + β dual phase alloys, was investigated . Zr solutes caused both α-Ti ...
Revisiting the Role of Solutes in Grain Refinement of …
WebThe effect of separate solute additions of Al, Zr, Sr, Si, and Ca on grain size of Mg has been investigated. Increasing the Al content in hypoeutectic Mg-Al alloys resulted in a continuous reduction in grain size up to 5 wt pct Al, reaching a relatively constant grain size for higher Al contents (above 5 wt pct). The effect of Sr additions was investigated in … WebApr 12, 2024 · The grain refinement mechanisms of solute atom Zr and Al 3 Zr are different, which leads to the difference in grain refinement effect. The refining effect of Al 3 Zr phase is much better than that of solute atomic Zr, which occupies a dominant position. Wang et al. studied the counter mats with rubber backing
Modeling of grain refinement: Part I. Effect of the solute …
WebJul 18, 2024 · Experimental data on grain size in hypoeutectic alloys with various solute concentrations are collected and analyzed. Curves of grain size as functions of composition are plotted and compared with the relevant phase diagrams. These curves indicate that the minimum in grain size occurs at the solubility limit of the solute on a phase diagram, and … WebNov 18, 2015 · Obviously, this is attributed to the combined effect of solid solution strengthening, which reduces ductility, and grain refinement that concurrently increases both strength and ductility. Compared with Al, Mg marginally improves the elongation of Zn alloys even though it increases the yield strength substantially. Fig. 5 WebApr 1, 2011 · In the absence of interaction of solutes, this parameter Q measures the effect of solute in grain refinement of the alloy [199]. Higher Q-value implies more rapid … counter meaning in chinese