所属单位：航空学院

发表刊物：MATERIALS

关键字：bulk metallic glass matrix composites (BMGCs) meso-mechanics shear band stress-strain relation failure

摘要：A meso-mechanical damage model is developed to predict the tensile damage behaviors of bulk metallic glass composites (BMGCs) toughened by ductile particles. In this model, the deformation behaviors of the BMG matrix and particles are described by the free volume model and Ludwik flow equation, respectively. Weng's dual-phase method is used to establish the relationship between the constituents and the composite system. The strain-based Weibull probability distribution function and percolation theory are adopted in characterizing the evolution of shear bands leading to the progressive failure of BMGCs. Moreover, the present model is performed under strain-controlled loading. Comparing to experiments on various BMGCs, the predictions are in good agreement with the measured results, which confirms that the present model successfully depicts the composite properties, such as yield strength, uniform deformation and strain softening elongation.

ISSN号：1996-1944

是否译文：否

发表时间：2018-02-01

第一作者：姜云鹏

通讯作者：姜云鹏