Bending property enhancements of Zr55Cu30Al10Ni5 bulk metallic glass: Effects of various surface modifications
作者： Chia-Chi Yu , Jinn P. Chu , Cheng-Min Lee , Wahyu Diyatmika , M.H. Chang
DOI: 10.1016/J.MSEA.2015.03.016
关键词:
摘要: Abstract Effects of various surface modifications on four-point bending property improvements Zr55Cu30Al10Ni5 bulk metallic glass (BMG) are systematically studied. Surface investigated include thin-film coating, artificial scratches and femtosecond laser patterning. After modifications, the negligible plastic strain 3-mm-thick BMG is found to markedly enhance ~9.2%, without sacrificing its extraordinary strength. Instead, yield fracture strengths in surface-modified samples increased ~2.8 GPa ~4.0 GPa, respectively, corresponding a rise ~66% from those as-cast samples. In addition, with exhibit distinct shear band morphologies. Relationships between offset, spacing bent established. Our experimental results demonstrate that able survive flow abrupt through proper designs which large numbers bands formed distribute effectively upon loading.
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