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MM: Fachverband Metall- und Materialphysik

MM 5: Mechanical Properties

MM 5.6: Vortrag

Montag, 1. April 2019, 11:45–12:00, H46

Influence of Post Annealing on The Microstructure and Mechanical Properties of CuSn4/Fe Nanolaminates produced by ARB — •Maher Ghanem, Benoit Merle, Heinz Werner Höppel, and Mathias Göken — Friedrich Alexander Universität (FAU)_Lehrstuhl WW1: Allgemeine Werkstoffeigenschaften

The accumulative roll bonding (ARB) process has been applied to produce laminates with a layer thickness in the submicron to nanometer range. CuSn4/Fe nanolaminates with alternating layers of CuSn4 and Fe (99.88%) were produced by roll-bonding with 50% reduction and annealing at 400 *C following each pass. The rolling was repeated 14 times to achieve a layer thickness of about 100 nm. These nanolaminates were post annealed at different temperatures and the changes in their microstructure and mechanical properties as the number of ARB passes increased were observed. The microstructure was evaluated by means of backscatter electron (BSE) imaging and the mechanical properties of the nanolaminates were investigated through tensile and nanoindentation tests in order to observe the changes both locally and globally. It was found that the strength of the laminated composite could increase by a factor of about 2.5 times compared to single components. This increase in strength is discussed in terms of microstructural and phase interface contributions.