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首页> 外文期刊>Metallurgical and Materials Transactions A >Effect of Strain Rate on Plastic Flow in Zr-Based Metallic-Glass-Reinforced Porous Tungsten Matrix Composites
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Effect of Strain Rate on Plastic Flow in Zr-Based Metallic-Glass-Reinforced Porous Tungsten Matrix Composites

机译：应变速率对Zr基金属玻璃增强多孔钨基复合材料塑性流动的影响

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摘要

The rate-dependent deformation of Zr38Ti17Cu10.5Co12Be22.5 bulk metallic-glass-reinforced porous tungsten matrix composites was investigated over a wide range of strain rates. The composites were examined in two forms: the as-cast composite and the as-extruded composite by extrusion. In addition to showing greater strain hardening, the as-cast composite also shows much more obvious strain rate dependence of flow stress than the as-extruded composite. Microhardness tests were performed on the tungsten and the metallic glass phase in both composites, respectively. The results from the microhardness measurements indicate that the strain rate sensitivity of the as-extruded composite is primarily a result of strain rate sensitivity of the tungsten phase.
机译：Zr 38 Ti 17 Cu 10.5 Co 12 Be 22.5 在宽应变率范围内研究了块状金属玻璃纤维增​​强的多孔钨基复合材料。检验复合材料有两种形式：铸态复合材料和挤压复合材料。除了表现出更大的应变硬化外，铸态复合材料还显示出比铸态复合材料更明显的流变应变率依赖性。分别对两种复合材料中的钨和金属玻璃相进行了显微硬度测试。显微硬度测量的结果表明，挤出复合材料的应变速率敏感性主要是钨相的应变速率敏感性的结果。

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