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

Metals

Shantanu V. Madge¹  Dmitri V. Louzguine-Luzgin²  Akihisa Inoue² 

[1] National Metallurgical Laboratory, Jamshedpur 831007, India;WPI-AIMR, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan; E-Mails:

关键词: plasticity;    bulk metallic glasses;    composites;    toughness;   

DOI  :  10.3390/met3010041

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.