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• Madge, SV.
• Louzguine-Luzgin, DV.
• Inoue, A
• Greer, ALindsay
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• Louzguine-Luzgin, DV.
• Inoue, A
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• Louzguine-Luzgin, DV.
• Inoue, A
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Metals 2013, 3(1), 41-48; doi:10.3390/met3010041

Article

Large Compressive Plasticity in a La-Based Glass-Crystal Composite

Shantanu V. Madge ^1,2,* , Dmitri V. Louzguine-Luzgin ² , Akihisa Inoue ²  and Alan Lindsay Greer ^2,3

¹ National Metallurgical Laboratory, Jamshedpur 831007, India ² WPI-AIMR, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan ³ Department of Materials Science & Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK

* Author to whom correspondence should be addressed.

Received: 28 November 2012; in revised form: 16 December 2012 / Accepted: 18 December 2012 / Published: 27 December 2012

(This article belongs to the Special Issue Amorphous Alloys)

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Abstract: La₅₅Al₂₅Cu₁₀Ni₁₀ metallic glass has been reinforced with 325-mesh Ta particles to obtain ex situ glass-crystal composites. The composites show a high compressive plasticity (40%) with a minor reduction (~8%) in yield strength—a combination unprecedented for La-based systems and even surpassing some Zr-based glassy composites that utilize a tougher matrix. However, it is also found that the plastic strain is apparently sensitive to defects, like oxides, in the glassy matrix.

Keywords: plasticity; bulk metallic glasses; composites; toughness

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