Characterization of Metallic Glasses

1. Characterization of Metallic Glasses Faculty: Ghatu Subhash Students: Hao Li and Hongwen Zhang • Background • Metallic glasses (amorphous metals) have high strength similar to ceramics and ductility similar to metals. They are increasingly used in recreational and military applications • Understanding their mechanical behavior is vital to better utilization of these materials • Xxxxx Place Background Figure Here • Research Objective • To determine static and dynamic behavior using hopkinson pressure bar and nanoindentation • Identify the influence of compositional variations on mechanical behavior • Development of constitutive models for deformation and fracture • Identify the mechanism for shearband formation

2. ShortProjectTitle Place Figure Here • Determination of Compressive Strength • The compressive strength under dynamic loading is lower than that under quasi-static loading. • Substitution of Hf for Zr increases compressive strength for both dynamic and quasi-static compression. 0 0.2 0.4 0.6 0.8 1.0 0.6 1.0 Zr+Hf=52.5 Zr+Hf=57 Zr/Zr+Hf Fracture strength of metallic glasses under quasi-static and dynamic compression Place Figure Here • Result 2 • Xxxxx • Xxxxx • Xxxxx