Using coupled micropillar compression and micro-Laue diffraction to investigate deformation mechanisms in a complex metallic alloy Al13Co4

DOI: 10.1063/1.4944486

Authors: Ayan Bhowmik (University of Cambridge; Imperial College London) , Igor Dolbnya (Diamond Light Source) , Thomas Britton (Imperial College London) , Nicholas Jones (University of Cambridge) , Giorgio Sernicola (Imperial College London) , Claudia Walter (University of Cambridge) , Peter Gille (Ludwig-Maximilians-Universität München) , David Dye (Imperial College London) , William Clegg (Newcastle University) , Finn Giuliani (Imperial College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Applied Physics Letters , VOL 108

State: Published (Approved)
Published: March 2016
Diamond Proposal Number(s): 8179

Abstract: In this study, we have used in-situ micro-Laue diffraction combined with micropillar compression of focused ion beam milled Al13Co4 complex metallic alloy to investigate the evolution of deformation in Al13Co4. 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 × 1013 m−2.

Journal Keywords: Deformation; Bending moment; Materials modification; Focused ion beam; Transmission electron microscopy; Mechanical stress; Crystal lattices; X-ray diffraction; Plasticity; Crystallographic defects

Diamond Keywords: Alloys

Subject Areas: Materials


Instruments: B16-Test Beamline

Other Facilities: 34-ID-E at APS

Added On: 31/03/2016 10:58

Documents:
1.4944486.pdf

Discipline Tags:

Materials Science Metallurgy

Technical Tags:

Diffraction