Simplified prediction model for elastic modulus of particulate reinforced metal matrix composites
(1.重庆市重庆大学国家镁合金材料工程技术中心
2.重庆市重庆大学材料科学与工程学院
3.Chongqing Engineering Research Center for Magnesium Alloys, Chongqing University,Chongqing 400044, China
4.Faculty of Engineering, Chiba University, Chiba, Japan
5.Southwest Aluminum Industry (Group) Co. Ltd, Chongqing 401326, China)
2.重庆市重庆大学材料科学与工程学院
3.Chongqing Engineering Research Center for Magnesium Alloys, Chongqing University,Chongqing 400044, China
4.Faculty of Engineering, Chiba University, Chiba, Japan
5.Southwest Aluminum Industry (Group) Co. Ltd, Chongqing 401326, China)
Abstract: Some structural parameters of the metal matrix composite, including particulate shape and distribution do not influence the elastic modulus. A prediction model for the elastic modulus of particulate reinforced metal matrix Al composite was developed and improved. Expressions of rigidity and flexibility of the rule of mixing were proposed. A five-zone model for elasticity performance calculation of the composite was proposed. The five-zone model is thought to be able to reflect the effects of the MMC interface on elastic modulus of the composite. The model overcomes limitations of the currently-understood rigidity and flexibility of the rule of mixing. The original idea of a five-zone model is to propose particulate/interface interactive zone and matrix/interface interactive zone. By integrating organically with the law of mixing, the new model is found to be capable of predicting the engineering elastic constants of the MMC composite.
Key words: particulate reinforced metal matrix composite; elastic modulus; prediction model