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Reports from Swiss Federal Institute of Technology Describe Recent Advances in Materials Engineering (Fabrication and Deformation of Metallic Glass...

August 27, 2014



Reports from Swiss Federal Institute of Technology Describe Recent Advances in Materials Engineering (Fabrication and Deformation of Metallic Glass Micro-Lattices)

By a News Reporter-Staff News Editor at Journal of Engineering -- New research on Materials Engineering is the subject of a report. According to news originating from Zurich, Switzerland, by VerticalNews correspondents, research stated, "Recent progress in micro-and nanofabrication techniques enables the creation of hierarchically architected microlattices with dimensional control over six orders ofmagnitude, from centimeters down to nanometers. This hierarchical control facilitates the exploration of opportunities to exploit nano-sized material effects in structural materials."

Our news journalists obtained a quote from the research from the Swiss Federal Institute of Technology, "In this work, we present the fabrication, characterization, and properties of hollow metallic glass NiP microlattices. The wall thicknesses, deposited by electroless plating, were varied from approximate to 60nm up to 600 nm, resulting in relative densities spanning from 0.02 to 0.2%. Uniaxial quasi-static compression tests revealed two different regimes in deformation: (i) Structures with a wall thickness above 150 nm failed by catastrophic failure at the nodes and fracture events at the struts, with significant micro-cracking and (ii) Lattices whose wall thickness was below 150 nm failed initially via buckling followed by significant plastic deformation rather than by post-elastic catastrophic fracture."

According to the news editors, the research concluded: "This departure in deformation mechanism from brittle to deformable exhibited by the thin-walled structures is discussed in the framework of brittle-to-ductile transition emergent in nano-sized metallic glasses."

For more information on this research see: Fabrication and Deformation of Metallic Glass Micro-Lattices. Advanced Engineering Materials, 2014;16(7):889-896. Advanced Engineering Materials can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Advanced Engineering Materials - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1527-2648)

The news correspondents report that additional information may be obtained from J. Rys, ETH, Dept. of Mat, CH-8093 Zurich, Switzerland. Additional authors for this research include L. Valdevit, T.A. Schaedler, A.J. Jacobsen, W.B. Carter and J.R. Greer.

Keywords for this news article include: Zurich, Europe, Switzerland, Materials Engineering

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Source: Journal of Engineering


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