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论文类型：期刊论文

发表时间：2012-12-01

发表刊物：5th International Conference on Solidification Science and Processing

收录刊物：SCIE、CPCI-S

卷号：65

期号：6,SI

页面范围：577-580

ISSN号：0972-2815

关键字：Bulk metallic glass; ZrAlCo; Atomic-cluster-plus-glue-atom model; Mechanical property

摘要：In the present work we have studied the formation of bulk metallic glass in the Zr-Co-Al system. Using the atomic-cluster-plus-glue-atom model, a cluster formula composition, [Co2Al2Zr7](Co2Zr) = Zr57.1Co28.6Al14.3), was derived to explore bulk metallic glass formation. Glass rod of 10 mm diameter can be made at this composition by copper mold casting. The glass alloy exhibited an undercooled liquid span of 43 K at a constant differential calorimetric heating rate of 40 K/min. Under uniaxial compression at room temperature, the alloy exhibited a yield strength of 2,100 MPa and a plastic strain of 10 %.