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Vol.43, No.12, 815 ~ 820, 2005
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| Title |
| Special Edition : Symposium on Mechanical Behavior of Materials(2) ; Ti-based Bulk Metallic Glass Matrix Composite With High Plasticity |
| 김유찬 Yu Chan Kim , 김기배 Ki Bae Kim , 에릭플러리 Eric Fleury , 이재철 Jae Chul Lee , 김도향 Do Hyang Kim |
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| Abstract |
| W-rich particle reinforced Ti-based bulk metallic glass (BMG) matrix composites with a compressive strength approaching 3 GPa and a fracture strain of approximately 12% were developed. A composite microstructure consisted of um-scale W-rich solid solution particles distributed in the BMG matrix was successfully obtained by injection casting. In contrast to most existing BMG matrix composites, in which the improved ductility was only obtained at the expense of the strength, the composites developed in this study exhibited a significant enhancement in their strength, as well as an improvement in the plasticity. This improvement in the plasticity was attributed to the blocking and circumscription of the shear band propagation, leading to the formation of a large number of shear bands. |
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| Key Words |
| Ti-based alloy, Metallic glass matrix composite, Mechanical property, Eshelby`s equivalent inclusion model |
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