Plastic deformation behavior of Fe₄₀Ni₄₀P₁₄B₆ bulk metallic glass investigated by nanoindentation

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• 作者：Chongqing Zhang ; Kefu Yao
• 关键词：Fe₄₀Ni₄₀P₁₄B₆ bulk metallic glass ; nanoindentation tests ; compressing tests ; “ ; pop-in” ; characteristics ; shear bands ; compressive plastic strain
• 刊名：Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material
• 出版年：2007
• 出版时间：June 2007
• 年：2007
• 卷：14
• 期：Supplement 1
• 页码：68-72
• 全文大小：465 K

文摘

Fe₄₀Ni₄₀P₁₄B₆ bulk metallic glass rods have been prepared by water quenching the fluxed alloy. The deformation behavior was investigated by nanoindentation tests and compressing tests. The average hardness and elastic modulus of the as-prepared Fe₄₀Ni₄₀P₁₄B₆ BMG (bulk metallic glass) measured by nanoindentation tests are 8.347 and 176.61 GPa respectively. The displacement-load curve shows “pop-in” characteristics which correspond to the loading rate bursts. Many shear bands around the indent were observed. The as-prepared Fe-based BMG exhibits a compressive plastic strain of 5.21 % , which is much larger than that of other Fe-based glassy alloys and most of other BMGs.