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Materials 2011, 4(4), 782-790; doi:10.3390/ma4040782
Article

Open-Cellular Co-Base and Ni-Base Superalloys Fabricated by Electron Beam Melting

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Received: 17 March 2011 / Revised: 30 March 2011 / Accepted: 6 April 2011 / Published: 14 April 2011
(This article belongs to the Special Issue Aerospace Materials)
Download PDF [763 KB, 15 April 2011; original version 14 April 2011]

Abstract

Reticulated mesh samples of Co-29Cr-6Mo alloy and Ni-21Cr-9Mo-4Nb alloy (625) and stochastic foam samples of Co-29Cr-6Mo alloy fabricated by electron beam melting were characterized by optical metallography, and the dynamic stiffness (Young’s modulus) was measured by resonant frequency analysis. The relative stiffness (E/Es) versus relative density (ρ/ρs) plotted on a log-log basis resulted in a fitted straight line with a slope n ≅ 2, consistent with that for ideal open cellular materials.
Keywords: superalloys; mesh and foam structures; dynamic stiffness; electron beam melting; microstructures superalloys; mesh and foam structures; dynamic stiffness; electron beam melting; microstructures
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Murr, L.; Li, S.; Tian, Y.; Amato, K.; Martinez, E.; Medina, F. Open-Cellular Co-Base and Ni-Base Superalloys Fabricated by Electron Beam Melting. Materials 2011, 4, 782-790.

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