Structure and mechanical properties of bulk glass-forming Ni–Nb–Sn alloys

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• 作者：Haein Choi-Yim ; Donghua Xu ; Mary Laura Lind ; Jö ; rg F. Lö ; ffler and William L. Johnson
• 关键词：Metallic glasses ; Composites ; Mechanical properties ; Phase separation
• 刊名：Scripta Materialia
• 出版年：2006
• 出版时间：2006
• 年：2006
• 卷：54
• 期：2
• 页码：187-190
• 全文大小：195 K

文摘

Ternary alloys of composition Ni₆₀Nb_40−xSn_x, with 3 direct.com/scidirimg/entities/2a7d.gif"" alt=""less-than-or-equals, slant"" border=0> x < 9, were found to form bulk metallic glasses. These alloys exhibit a high elastic modulus and measured compressive yield strength between 1.8 and 2.8 GPa. The measured yield strength of these ternary alloys depends strongly on their Sn content and is generally lower than the strength estimated from modulus and hardness. The tendency to phase separation suggested by small-angle neutron scattering experiments is used to account for the obvious discrepancy between the measured and the theoretical strengths.