Cu reticulated mesh and stochastic open cellular foams were fabricated by additive manufacturing using electron beam melting. Fabricated densities ranged from 0.73g/cm3 to 6.67g/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 ∼2μm, which provide hardness values ∼75% above commercial Cu products. Plots of stiffness (Young's 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. © 2011 Elsevier B.V.
CITATION STYLE
Ramirez, D. A., Murr, L. E., Li, S. J., Tian, Y. X., Martinez, E., Martinez, J. L., … Wicker, R. B. (2011). Open-cellular copper structures fabricated by additive manufacturing using electron beam melting. Materials Science and Engineering: A, 528(16–17), 5379–5386. https://doi.org/10.1016/j.msea.2011.03.053
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