Next Article in Journal
Nanotoxicology of Metal Oxide Nanoparticles
Next Article in Special Issue
On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires
Previous Article in Journal
Epitaxial Growth of Hard Ferrimagnetic Mn3Ge Film on Rhodium Buffer Layer
Previous Article in Special Issue
Effect of Milling Time and the Consolidation Process on the Properties of Al Matrix Composites Reinforced with Fe-Based Glassy Particles
Article Menu

Export Article

Open AccessArticle
Metals 2015, 5(2), 920-933; doi:10.3390/met5020920

Mechanical and Structural Investigation of Porous Bulk Metallic Glasses

1
Institute for Complex Materials, Leibniz Institute for Solid State and Materials Research Helmholtzstrasse 20, D-01069 Dresden, Germany
2
Politehnica University of Timisoara, P-ta Victoriei 2, RO-300006 Timisoara, Romania
3
TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: K. C. Chan and Jordi Sort Viñas
Received: 28 April 2015 / Revised: 20 May 2015 / Accepted: 25 May 2015 / Published: 2 June 2015
(This article belongs to the Special Issue Metallic Glasses)
View Full-Text   |   Download PDF [2959 KB, uploaded 2 June 2015]   |  

Abstract

The intrinsic properties of advanced alloy systems can be altered by changing their microstructural features. Here, we present a highly efficient method to produce and characterize structures with systematically-designed pores embedded inside. The fabrication stage involves a combination of photolithography and deep reactive ion etching of a Si template replicated using the concept of thermoplastic forming. Pt- and Zr-based bulk metallic glasses (BMGs) were evaluated through uniaxial tensile test, followed by scanning electron microscope (SEM) fractographic and shear band analysis. Compositional investigation of the fracture surface performed via energy dispersive X-ray spectroscopy (EDX), as well as Auger spectroscopy (AES) shows a moderate amount of interdiffusion (5 at.% maximum) of the constituent elements between the deformed and undeformed regions. Furthermore, length-scale effects on the mechanical behavior of porous BMGs were explored through molecular dynamics (MD) simulations, where shear band formation is observed for a material width of 18 nm. View Full-Text
Keywords: bulk metallic glass; porous materials; Si lithography; thermoplastic forming; mechanical testing; shear band; microstructure; toughening mechanism; MD simulations; compositional analysis bulk metallic glass; porous materials; Si lithography; thermoplastic forming; mechanical testing; shear band; microstructure; toughening mechanism; MD simulations; compositional analysis
Figures

Figure 1

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. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sarac, B.; Sopu, D.; Park, E.; Hufenbach, J.K.; Oswald, S.; Stoica, M.; Eckert, J. Mechanical and Structural Investigation of Porous Bulk Metallic Glasses. Metals 2015, 5, 920-933.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top