Author/Authors :
Ramirez، نويسنده , , D.A. and Murr، نويسنده , , L.E. and Li، نويسنده , , S.J. and Tian، نويسنده , , Y.X. and Martinez، نويسنده , , E. and Martinez، نويسنده , , J.L. and Machado، نويسنده , , B.I. and Gaytan، نويسنده , , S.M. and Medina، نويسنده , , F. and Wicker، نويسنده , , R.B.، نويسنده ,
Abstract :
Cu reticulated mesh and stochastic open cellular foams were fabricated by additive manufacturing using electron beam melting. Fabricated densities ranged from 0.73 g/cm3 to 6.67 g/cm3. The precursor Cu powder contained Cu2O precipitates and the fabricated components contained arrays of Cu2O precipitates and interconnected dislocation microstructures having average spacings of ∼2 μm, which provide hardness values ∼75% above commercial Cu products. Plots of stiffness (Youngʹs modulus) versus density and relative stiffness versus relative density were in very close agreement with the Gibson–Ashby model for open cellular foams. These open cellular structure components exhibit considerable potential for novel, complex, multi-functional electrical and thermal management systems, especially complex, monolithic heat exchange devices.
