|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||D-72: Through-thickness Strain Gradient in a Hot Rolled Al-Mg Alloy Obtained by Nanoindentation and Glancing Angle X-ray Diffraction
||Sepideh Parvinian, Eric Hoar, Mehdi Shafiei, John Hunter, Hamid Garmestani
|On-Site Speaker (Planned)
Combined Nanoindentation and glancing angle X-ray diffraction (GAXD) methods were used to study the mechanical properties of its near-surface microstructures (NSMs) of hot rolled 5xxx aluminum alloy.Analysis of nanoindentation hardness results proved NSMs of this alloy on average is harder than the bulk due to presence of different surface features discussed here.The strain-induced broadening in the diffraction peaks was calculated by Williamson-Hall technique. Both indentation hardness and glancing angle diffraction results confirmed strain gradient as a function of depth in the NSMs of the alloy. Both techniques also showed that the thickness of subsurface layer of hot-rolled sample was approximately 2.5μm at the tested areas. Additionally, reported results provided evidence for the ability to use glancing angle x-ray diffraction as a nondestructive tool for the measurement of thickness of subsurface layers as well as microstrain (non-uniform or plastic strain) as a function of depth.
||Planned: Light Metals