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Microstructural Design of Precipitate Strengthened Alloys with Enhanced Mechanical Properties - Experiments and Simulation

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Arizona State University Tempe United States

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Obtain a fundamental understanding of the precise mechanisms for complex dislocation precipitate interactions. b Characterize and quantify morphology of nanoscale theta and theta prime precipitates in three-dimensions nondestructively using Transmission X-Ray Microscopy and understand their evolution and coarsening behavior at high temperatures as a function of time 4D Tomography.c Correlate local mechanical behavior of Al-Cu alloys with their 3D microstructure, by means of in situ miniaturized mechanical testing techniques like nanoindentation and micropillar compression. d Using a combination of experiments and simulations while also incorporating and analyzing the relevant microstructural features, e.g., precipitate size and spacing, nature of interface, and crystallography, determine the optimum microstructure necessary to obtain desired mechanical properties in model alloys.

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Technical Report,11 Aug 2014,10 Aug 2017



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Approved For Public Release;

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