Mechanical and Structural Investigation of Porous Bulk Metallic Glasses
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Influence of Pore Design
Sample Name | σy (MPa) | εy (-) | E (GPa) | W (MJ/m3) |
---|---|---|---|---|
Zr-BMG bulk | 1741 | 0.019 | 87 | 16.8 |
Pt-BMG bulk | 1924 | 0.020 | 95 | 19.4 |
Zr-BMG d100s50 | 1305 | 0.058 | 23 | 41.6 |
Pt-BMG d100s50 | 1399 | 0.053 | 28 | 39.6 |
3.2. Size Effects in Metallic Glasses
3.3. Compositional Investigation of Pt-BMG
Element | Pt | Cu | Ni | P | nP/nPt |
---|---|---|---|---|---|
Chemical analysis (at.%) | 57.0 ± 0.4 | 14.4 ± 0.1 | 5.2 ± 0.1 | 23.4 ± 0.1 | 0.41 |
EDX Spectra (at.%) (Figure 7a–d) | |||||
mean of undeformed region (Figure 7a) | 56.0 | 14.6 | 5.5 | 23.9 | 0.43 |
mean of smooth region (Figure 7b) | 55.5 | 15.4 | 6.8 | 22.3 | 0.40 |
mean of vein-like region (Figure 7c) | 57.3 | 16.2 | 6.3 | 20.2 | 0.35 |
mean of ridges + molten regions(Figure 7d) | 58.4 | 16.4 | 6.4 | 18.8 | 0.32 |
Auger spectra (at.%) (Figure 7e) | |||||
mean of undeformed region | 73.3 | 6.4 | 5.4 | 14.9 | 0.20 |
mean of smooth region | 75.6 | 6.0 | 5.6 | 12.8 | 0.17 |
mean of vein-like region | 76.9 | 6.1 | 5.3 | 11.7 | 0.15 |
mean of core + molten regions | 76.4 | 6.4 | 5.2 | 12.0 | 0.16 |
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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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. https://doi.org/10.3390/met5020920
Sarac B, Sopu D, Park E, Hufenbach JK, Oswald S, Stoica M, Eckert J. Mechanical and Structural Investigation of Porous Bulk Metallic Glasses. Metals. 2015; 5(2):920-933. https://doi.org/10.3390/met5020920
Chicago/Turabian StyleSarac, Baran, Daniel Sopu, Eunmi Park, Julia Kristin Hufenbach, Steffen Oswald, Mihai Stoica, and Jürgen Eckert. 2015. "Mechanical and Structural Investigation of Porous Bulk Metallic Glasses" Metals 5, no. 2: 920-933. https://doi.org/10.3390/met5020920