|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Mechanical Behavior of Ultrafine-grain Gradient Structures Produced via Ambient and Cryogenic Surface Mechanical Attrition Treatment
||Heather Murdoch, Kristopher Darling, A.J. Roberts, Laszlo Kecskes
|On-Site Speaker (Planned)
Variations in the processing temperature of surface mechanical attrition treatments (SMAT) produce significant differences in the resulting ultrafine-grain size gradient microstructure – surface grain size can be reduced by 40-60% through cryogenic processes as compared to ambient; however, the grain size gradient region is significantly shallower. The depth and volume fraction of the grain refined and deformed region has significant impacts on the mechanical properties of the gradient material, notably the tensile ductility.