Influence of atomized powder size on microstructures and mechanical properties of rapidly solidified Al–Cr–Y–Zr aluminum alloys

Formation of Fine Multicomponent Precipitates and Enhanced Precipitation-Hardening in an Al–Cr–Pr–Zr Alloy

“…The Al 3 Zr particles containing Cr and Pr are still coherent with Al matrix for the Al1.0Cr1.4Pr1.6Zr alloy after longtime isothermal treatment. Figure 6 shows bright-field TEM images and SEAD patterns of submicron dispersed phases in the Al1.0Cr1.4Pr and Al1.0Cr1.4Pr1.6Zr alloys after 17) investigated dispersed phases formed in the rapid solidified AlCrYZr alloy and suggested that the YCr 2 Al 20 particles with CeCr 2 Al 20 -type structure are fine and uniformly distributed during a low temperature forming process, but obviously coarsen, even then become massive phase during high temperature extrusion and thermal explosion. Figure 7 shows the dependence of the microhardness on the homogenization time for the Al1.0Cr1.4Pr, Al1.6Zr and Al1.0Cr1.4Pr1.6Zr alloys after homogenized at 500°C.…”

Kinetics of Hydrogen Desorption from Rapidly Solidified Al-Cr Alloys

“…Note that RS alloys on basis of Al-Cr system are an example of heat-resistant lightweight structural materials because of their high-temperature mechanical properties and enhanced thermal stability. 12,13) In the study, thermal desorption spectroscopy (TDS) was applied to detect hydrogen evolution from RS alloys. In fact, hydrogen is the only gas that is appreciably soluble in aluminium and its alloys.…”