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Published August 2013 | public
Journal Article

Effect of cooling rate on the volume fraction of B2 phases in a CuZrAlCo metallic glass matrix composite


The material properties of bulk metallic glass matrix composites (BMGMCs) depend strongly on the morphology and elastic constants of the included crystalline phase. Transformation induced plasticity (TRIP) BMGMCs based on the Cu–Zr system are alternatives to traditional dendrite-reinforced BMGMCs. Samples of a representative alloy, Zr_(48)Cu_(47.5)Al_4Co_(0.5), are fabricated in various dimensions and characterized using DSC, SEM, and ultrasonic measurement of elastic constants. It is shown that the Cu–Zr system uniquely softens during crystallization, and the microstructure of the alloy depends strongly on the rate of cooling. We conclude by discussing how combinations of part design and alloy development could be used to utilize these alloys in applications.

Additional Information

© 2013 Elsevier Ltd. Received 31 December 2012. Accepted 25 March 2013. Available online 19 April 2013. This work was supported by the National Aeronautics and Space Administration (NASA), Exploration Systems Mission Directorate, under Contract No. MSFC-NRA10, and the Air Force Office of Scientific Research under grant no. RF01152700/PO60020925. Some graduate student support was provided by the Office of Naval Research, under grant N0000-14-07-1-1115.

Additional details

August 19, 2023
October 24, 2023