| Abstract Scope |
Understanding the crystallographic texture development in Al-Mg alloys that are widely employed as interior panels of automotive bodies particularly under dynamic loading is indispensable to study their susceptibility to high-speed forming processes, and performance during the crash events. In this work, texture evolution in Al-4%Mg sheet material subjected to dynamic tensile deformation using split Hopkinson tension bar test is studied using X-ray diffraction and compared to the corresponding responses during the quasi-static test for similar strain levels. Using JMAK analysis, this study reveals that although cube and copper components evolve at both the loading rates, the lattice rotation, rotation path, rotation rate, and the strengths of texture components are significantly different at high strain rate. Also, the deformation texture evolution is found to be non-linear at high strain rate and has a direct implication to the characteristics of grain structure, dislocation density, and misorientation evolution measured using electron backscatter diffraction. |