The Mechanical Properties Of Thermal Residual Stress Effect On Particles Enhanced Mg Matrix Composite

Particle reinforced composites (PRMMCs) reinforced phase and matrix phase have a great difference of thermal expansion coefficient of the composites have led to the internal thermal residual stress, the thermal residual stress compression yield strength of the composites is higher than the tensile yield strength of lead, and the proportional limit of the material is close to or slightly lower than the single matrix alloy. Therefore, the thermal residual stress in the particle reinforced composite material mechanics performance change must be studied.In this paper, metal matrix composites reinforced by particles (PRMMCs) as the research object,Introduces the difference of thermal expansion coefficient of composite matrix and enhance phase,description of the process of thermal residual stress generated,and the calculate the effect of residual stress on the mechanical properties of composite,to illustrate the importance of the study.By finite element method, they are applied to static and dynamic loads, comparison of thermal effect of residual stress on the static and dynamic mechanical properties of PRMMC.Through the PRMMC thermal residual stress simulation experiments, to understand the deformation characteristics of composite internal under different external loads. Hope that through the analysis of the thermal residual stress, it could provide certain guidance mechanical magnesium matrix composites for particle reinforced analysis.