Improved plasticity of bulk metallic glasses upon cold rolling
Received 24 October 2009; received in revised form 10 December 2009; accepted 13 January 2010. published online 18 January 2010.
The intrinsic plasticity of Zr44Ti11Cu9.8Ni10.2Be25 and Zr55Ti5Al10Cu20 Ni10 bulk metallic glasses (BMGs) are improved from 0.5% up to 15% plastic strain due to the introduction of microstructural inhomogeneities upon cold rolling at room temperature. This approach shows an easy way to overcome the intrinsic brittleness of the BMGs by modifying their physical properties, which enables easy nucleation and branching of multiple shear bands upon unconstrained loading during the compression test.
aAdvanced Materials Division, Korea Institute of Industrial Technology, Incheon 406-840, Republic of Korea
bDepartment of Materials Processing, Applied Plasticity Research Group, Korea Institute of Materials Science, Changwon, Gyeongnam 641-831, Republic of Korea
cDepartment of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, West Bengal, India
dLeibniz-Institute IFW Dresden, Institute for Complex Materials, Helmholtzstr 20, D-01069 Dresden, Germany
eTU Dresden, Institute of Materials Science, D-01062 Dresden, Germany
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