Using coupled micropillar compression and micro-Laue diffraction to investigate deformation mechanisms in a complex metallic alloy Al_(13)Co_4

摘要

In this study, we have used in-situ micro-Laue diffraction combined with micropillar compression of focused ion beam milled Al_(13)Co_4 complex metallic alloy to investigate the evolution of deformation in Al_(13)Co_4. Streaking of the Laue spots shows that the onset of plastic flow occurs at stresses as low as 0.8 GPa, although macroscopic yield only becomes apparent at 2 GPa. The measured misorientations, obtained from peak splitting, enable the geometrically necessary dislocation density to be estimated as 1.1 × 10~(13)m~(-2).