New class of plastic bulk metallic glass.
An intrinsic plastic Cu(45)Zr(46)Al(7)Ti(2) bulk metallic glass (BMG) with high strength and superior compressive plastic strain of up to 32.5% was successfully fabricated by copper mold casting. The superior compressive plastic strain was attributed to a large amount of randomly distributed free volume induced by Ti minor alloying, which results in extensive shear band formation, branching, interaction and self-healing of minor cracks. The mechanism of plasticity presented here suggests that the creation of a large amount of free volume in BMGs by minor alloying or other methods might be a promising new way to enhance the plasticity of BMGs.
Chen
L Y
LY
International Center for New-Structured Materials, Zhejiang University, Hangzhou 310027, People's Republic of China.
Fu
Z D
ZD
Zhang
G Q
GQ
Hao
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XP
Jiang
Q K
QK
Wang
X D
XD
Cao
Q P
QP
Franz
H
H
Liu
Y G
YG
Xie
H S
HS
Zhang
S L
SL
Wang
B Y
BY
Zeng
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Jiang
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JZ