Stepped-diameter rods of 3- and 4mm diameter were cast to explore the effects of changing the niobium content of a previously studied Bulk Metallic Glass Composite (BMGC) alloy. 4mm specimens were found to be fully crystalline containing a B2 CuZr phase as well as a Cu10Zr7 intermetallic phase identified in XRD. 3mm specimens were found to have more varied microstructures, including one composition that produced possible core-shell structured precipitates. No amorphous material was confirmed, however DSC data suggests a phase transformation took place in the 3mm specimens that did not occur in the 4mm specimens.

Document Type

Final Report

Author's School

McKelvey School of Engineering

Author's Department

Mechanical Engineering and Materials Science

Class Name

Mechanical Engineering and Material Sciences Independent Study

Date of Submission