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

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].…”

“…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.…”

“…The melt spinning method stands out because it produces high cooling rates such as 10 7 K/s and is suitable for mass production [6,9,21,22]. Rapid solidification process in aluminum alloys provides benefits such as reduction of segregation, grain size refinement, suppression or elimination of coarse segregation phases, modification of secondary phases in terms of size and shape, increase of chemical homogeneity, minimization of time or temperature in aging processes [2,5,21,23,24]. Unlike traditional production methods, the grain size of the materials produced by rapid solidification is finer.…”

Novel Ballistic Processing of Thick Films: Structural Evolution and Mechanical Behavior

“…[9] Microstructures of Al films produced via PFMS have been primarily on the microscale, with grain sizes typically ranging from a few tenths of micrometers to a few tens of micrometers, with evidence of significant dislocation densities. [10] In this present article, we present a new process, ballistic processing (BP)/manufacturing, [11] where projectiles or carriers are accelerated at high speeds (which can exceed 400 m s À1 ) into a molten metal curtain, during which the projectile is rapidly coated with a film of molten material. The advantage of such an approach includes the ability to produce films with thicknesses much lower than those produced through PFMS or splat quenching, in addition to the ability to produce thousands to potentially millions of standalone microscale and nanoscale components almost instantaneously using masking techniques.…”