Simulation study of block press molding of Al-Fe metals with different morphologies
In this paper,the Al-Fe composite metal containing 40%of Al is taken as the research object,and the granular 40Al-Fe composite metal and chip Al-Fe composite metal are pressed and predeformed respectively,focusing on the second hot compression deformation of the chip Al-Fe composite metal preformed billet,to study the effect of pressing predeformation and hot compression on the formability and interface of Al-Fe composite metal.The results show that the granular 40Al-Fe composite metal preforms(density of 4.54 g/cm3)at a pressure of 16 MPa have good formability and form a dense interface.Pressure of 16 MPa when the chip-like 40Al-Fe composite metal prefabricated billet(density of 3.50 g/cm3)can be molded but there are holes in the interface,Al chips are mainly"lamellar","dogtooth","circle","wave",after the second hot compression deformation"circle"Al chips into a whole,"dogtooth"and"wavy","dogtooth"and"wavy"."Circle-like","wave-like",after the second thermal compression deformation"circle-like"Al shavings connected to a whole,"dogtooth-like"and"wave-like"Al shavings,"dogtooth-like"and"wave-like"Al shavings,"dogtooth-like"and"wave-like"Al shavings."Wave-like"Al chips are evolved into"lamellar",after the second thermal compression deformation Fe chips are still"lamellar","blocky",without obvious deformation occurs.The deformation temperature of 300℃,deformation rate of 0.5 s-1,and the degree of deformation of 0.1 are the best parameters of the current production process,at which time the shavings of 40Al-Fe composite metal have the best formability and good interfacial bonding(density of 4.66 g/cm3).
万方数据
维普
