Crystallization kinetics and consolidation of mechanically alloyed Al70Y16Ni10Co4 glassy powders

Deformation-induced crystallization in amorphous Al85Ni10La5 alloy

“…These glasses exist therefore only in limited sample dimensions such as powders, flakes or ribbons, which require consolidation to a bulk material for any structural application. As shown in the literature, consolidation by hot pressing [10,11] and hot extrusion [11,12] has to be performed at rather high temperatures (around the crystallization onset and higher) to obtain sufficiently compacted samples with low porosity. As a consequence of the high processing temperature, the bulk materials consolidated in one of these ways are usually completely crystallized and brittle.…”

Structure and mechanical properties of Al–Mg alloys produced by copper mold casting

“…For the samples with compositions in the range 5 ≤ x ≤ 20, which display high strength combined with remarkable plastic deformation, the specific strength sharply increases from 143 kNm/kg for x = 5 to 265 kNm/kg for the sample with x = 20. These values of specific strength are higher than those reported for lightweight materials, such as Al-based composites reinforced with ceramic particles [24,25] (about 110 kNm/kg) and with metallic glasses [26] (about 105 kNm/kg), and they are of the same magnitude of high-strength nanostructured Al-based alloys [27] (280 kNm/kg) and Mg-based metallic glasses [28] (290 kNm/kg).…”

Liquid phase separation and microstructure characterization in a designed Al-based amorphous matrix composite with spherical crystalline particles

“…5. It suggests that the crystal Al has precipitated from the Al-based amorphous matrix phase [47][48][49][50]. The XRD analysis shows the nanocrystal ␣-Al is with face-centered cubic structure and a lattice parameter a = 0.4049 nm.…”