|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Thermo-mechanical Response of Materials with Special Emphasis on In-situ Techniques
||Combinatorial In Situ Micromechanics of the Al-Cu System at Low Temperatures
||Yuan Xiao, Bin Gan, Alla S. Sologubenko, Jeff Wheeler
|On-Site Speaker (Planned)
Diffusion couples have long been a fundamental technique in materials science, allowing the exploration of phase diagrams and diffusion constants. With the advent of the Materials Genome Initiative, diffusion couples and multiples are now being used as a high throughput means to investigate a wide range of materials properties. However, so far only the most basic nanoindentation techniques have been used to interrogate mechanical properties of diffusion couples. Here, the potential of applying advanced micromechanical techniques to diffusion couples will be demonstrated in the case of the Al-Cu binary system. Strain rate jump microcompression is employed in situ in the SEM to probe the strain rate sensitivity over a range of compositions from ambient to cryogenic temperatures. This provides insight into the Portevin-LeChatelier effect within a consistent single-crystalline microstructure with varying strain rates, temperatures, solute concentrations and precipitate density.
||Planned: Supplemental Proceedings volume