|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Extreme Strengthening in Gradient Structured Aluminum Alloy
||Jordan Moering, Xiaolong Ma, Yuntian Zhu, Suveen Nigel Mathaudhu
|On-Site Speaker (Planned)
Gradient structures have been shown to exhibit both increased strength and ductility, lending themselves to great promise in the use of structural metals. The prevailing theory of this paradoxical behavior derives from the complex stress state under which the gradient deforms, particularly in uniaxial tension. In this work, commercial purity aluminum alloys are shown to exhibit improvements in yield strength by nearly 300% while still retaining good ductility. Microstructural Electron Back Scattered Diffraction analysis suggests that additional slip systems arising from the out of plain strain may operate in the graded aluminum that are not present in the coarse grained control sample.