46th Magnetic Materials Center Seminar
June 1, 2007, 9:00
7th floor seminar room, Sengen

B.S. Rao


Mg-2.4Zn alloys with trace additions of Ag and Ca
C. Mendis
It has been shown that the combined additions of Ag and Ca refines the precipitate microstructures observed in Mg-2.4Zn alloys significantly. In this presentation effect of Zr additions on the peak aged microstructures of the Mg-Zn-Ag-Ca alloys will be presented. The mechanical properties of extruded alloys based on this system and the precipitation hardening response following extrusion will also be presented.

Large room temperature plasticity of bulk metallic glass due to geometry-constrained shear band interaction
K. Mondal
Careful investigation on the effect of aspect ratio on the room temperature plasticity of BMG has been carried out. There could be large increase in plasticity even without catastrophic failure. The critical aspect ratio, below which there would be no failure, depends on the inherent plasticity of BMG and it is much larger than the existing reports in the literature. The possible mechanism for attaining large plasticity of BMG as a function of aspect ratio has been discussed.