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Published December 29, 1997 | public
Journal Article Open

Bulk metallic glass matrix composites


Composites with a bulk metallic glass matrix were synthesized and characterized. This was made possible by the recent development of bulk metallic glasses that exhibit high resistance to crystallization in the undercooled liquid state. In this letter, experimental methods for processing metallic glass composites are introduced. Three different bulk metallic glass forming alloys were used as the matrix materials. Both ceramics and metals were introduced as reinforcement into the metallic glass. The metallic glass matrix remained amorphous after adding up to a 30 vol% fraction of particles or short wires. X-ray diffraction patterns of the composites show only peaks from the second phase particles superimposed on the broad diffuse maxima from the amorphous phase. Optical micrographs reveal uniformly distributed particles in the matrix. The glass transition of the amorphous matrix and the crystallization behavior of the composites were studied by calorimetric methods.

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©1997 American Institute of Physics. Received 22 September 1997; accepted 28 October 1997. The authors would like to thank U. Koster, R. Busch, R.B. Dandliker, and R.D. Conner for valuable discussions. This work was jointly supported by the U.S. Army Research Office and the U.S. Air Force Office of Scientific Research under ARO Grant No. DAAH04-95-1-0233.


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