Mechanical anisotropy in electrodeposited nanocrystalline metal/metal composite foams

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 552; pp. 157 - 163
• Main Authors: Lausic, A.T., Bouwhuis, B.A., McCrea, J.L., Palumbo, G., Hibbard, G.D.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 30-08-2012; Elsevier
• Subjects: Anisotropy; Cellular materials; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Electrodeposition; Electrodeposition, electroplating; Electromagnetic shielding; Electroplating; Exact sciences and technology; Ligaments; Materials science; Mechanical and acoustical properties of condensed matter; Mechanical properties of nanoscale materials; Metal foam; Methods of deposition of films and coatings; film growth and epitaxy; Methods of nanofabrication; Microstructure; Nanocrystalline materials; Nanocrystals; Nanoscale materials and structures: fabrication and characterization; Nickel; Physics; Reinforcement; Stiffness; Cellular materials; Nickel; Electroplating; Nanocrystalline materials; Metal foam; Cellular material; Nanostructures; Electromagnetic shielding; Compression strength; Screening; Composite materials; Anisotropy; Electrodeposition; Stiffness; Electrodeposited coatings; Nanocrystal
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2012.05.025

► Composite metal/metal nanocrystalline foams created by electrodeposition. ► Nanocrystalline tube network creates large strength and stiffness increases. ► Nanocrystalline thickness gradients result in significant mechanical anisotropy. ► Analytical models developed to predict in-plane and out-of-plane performance.
Electrodeposition can be used to create new types of nanocrystalline metal/metal composites. In addition to increasing the strength and stiffness of conventional metal foams, electrodeposition also has the effect of introducing mechanical anisotropy to the cellular architecture. Because of electromagnetic shielding effects, outer ligaments receive more electrodeposited material than inner ligaments, creating a gradient in structural reinforcement. This study provides a first examination of the compressive strength and stiffness anisotropy introduced by nanocrystalline electrodeposition.