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Mechanical properties of Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6) metallic glass matrix particulate composites

Conner, R. D. and Choi-Yim, H. and Johnson, W. L. (1999) Mechanical properties of Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6) metallic glass matrix particulate composites. Journal of Materials Research, 14 (8). pp. 3292-3297. ISSN 0884-2914. doi:10.1557/JMR.1999.0445.

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To increase the toughness of a metallic glass with the nominal composition Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6), it was used as the matrix in particulate composites reinforced with W, WC, Ta, and SiC. The composites were tested in compression and tension experiments. Compressive strain to failure increased by more than 300% compared with the unreinforced Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6), and energy to break of the tensile samples increased by more than 50%. The increase in toughness came from the particles restricting shear band propagation, promoting the generation of multiple shear bands and additional fracture surface area. There was direct evidence of viscous flow of the metallic glass matrix within the confines of the shear bands.

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Additional Information:© 1999 Materials Research Society. Received 7 May 1998; accepted 3 May 1999. This work was performed with the support of the United States Army Research Office under Grant No. DAAH04-95-1-0233.
Funding AgencyGrant Number
Army Research Office (ARO)DAAH04-95-1-0233
Issue or Number:8
Record Number:CaltechAUTHORS:20120111-074245517
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28741
Deposited By: Tony Diaz
Deposited On:11 Jan 2012 23:15
Last Modified:09 Nov 2021 17:00

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