材料科学
微观结构
非晶态金属
剪切带
复合材料
可塑性
枝晶(数学)
相(物质)
剪切(地质)
韧性
复合数
金属
冶金
合金
化学
有机化学
数学
几何学
作者
C. C. Hays,C. P. Kim,William L. Johnson
标识
DOI:10.1103/physrevlett.84.2901
摘要
Results are presented for a ductile metal reinforced bulk metallic glass matrix composite based on glass forming compositions in the Zr-Ti-Cu-Ni-Be system. Primary dendrite growth and solute partitioning in the molten state yields a microstructure consisting of a ductile crystalline Ti-Zr-Nb beta phase, with bcc structure, in a Zr-Ti-Nb-Cu-Ni-Be bulk metallic glass matrix. Under unconstrained mechanical loading organized shear band patterns develop throughout the sample. This results in a dramatic increase in the plastic strain to failure, impact resistance, and toughness of the metallic glass.
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