The quantitative relationship between microstructure and mechanical property of a melt spun Al–Mg alloy

Melt spinning induces sub-micrometric/micrometric grained structure and dislocations in 7075 Al alloy

“…[12] (~1.3 Â 10 14 m À2 ) albeit the former's smaller thickness (~40 mm for the former vs. 50e90 mm for the latter) and thus the higher cooling rate and the shorter solidification timeframe. We suggest that the difference in the dislocation densities between the two melt spun Al alloys may be primarily attributed to the difference in the enthalpies of mixing between Al and the alloying elements, which is discussed as follows.…”

“…[15], the grain sizes in the as-melt spun moderately alloyed commercial AleZneMgeCu alloys (e.g., 7075 Al alloy) are unavailable in the published scientific literature. Most recently, Lin et al [12] revealed a relatively high density of dislocations (~1.3 Â 10 14 m À2 ) in the meltspun 5083 Al alloy with the composition of Ale4.7Mge 0.76Mne0.14Cre0.22Fe (wt%), i.e., Ale5.22Mge0.37Mne0.073Cre 0.11Fe (at%). They suggested that the presence of the high density of dislocations may be attributable to the insufficient timeframe for completely disordered atoms in liquid state to be reorganized into perfectly ordered crystal lattice.…”

The Effects of Nb Addition on the Microstructure and Mechanical Properties of Melt Spun Al-7075 Alloy

“…Aluminum and its alloys, especially Al-7075 series ones, are frequently used in aviation and automotive industries due to their low density, high strength, ductility and fatigue resistance [1][2][3][4]. Although the Al-7075 alloy has excellent properties, researchers are still working to improve some of the properties of this material [2,5,6]. In order to further improve the mechanical properties of aluminum alloys, researchers make microstructure modifications by means of various additive elements such as Co, Ni, V, Sc, Ti, B and / or use new generation production techniques [7][8][9].…”

“…In order to further improve the mechanical properties of aluminum alloys, researchers make microstructure modifications by means of various additive elements such as Co, Ni, V, Sc, Ti, B and / or use new generation production techniques [7][8][9]. Methods such as precipitation hardening [10][11][12], deformation hardening [13,14], semi-solid casting [15,16] and/or various rapid solidification [2,5,[17][18][19] are applied to aluminum alloys whose strength cannot be increased by quenching. Many alloying elements are added to the aluminum alloy to refine the grain size by operating the heterogeneous nucleation mechanism.…”

Electrochemical Behavior of Al–Al9Co2 Alloys in Sulfuric Acid

“…During the last decades, rapidly solidified (RS) or intensively cooled Al-alloys have attracted significant attention owing to improved properties, such as mechanical properties and corrosion resistance. More specifically, many works have reported that RS of Al-alloys has led to refined microstructures as compared to the conventionally cast counterparts [1][2][3], supersaturation of Al with transition metals (TM), alkaline earth metals or metalloids [1,2,[4][5][6][7], formation of intermetallic compound (IC) phases (their morphology depending on the cooling rate and the content of the solute element in the alloys [1,2,4]), and formation of semi-crystalline or amorphous phases [8,9].…”