Mechanical Properties and Corrosion Behavior of Cellular Al-Sc-Zr Foams

DOI

10.2991/icsmme-15.2015.33How to use a DOI?

Keywords

Al-Sc-Zr Foams, Isochronal Aging Treatment, Compressive Strength, Immersion Corrosion, Polarization

Abstract

By using Ca particles as thickening agent and titanium hydride as blowing agent Cellular Al-0.16Sc-0.08Zr foams with a porosity of 72.5±0.5% were successfully fabricated by the melt-foaming method Isochronal aging treatments are beneficial to improve the mechanical properties and corrosion resistance significantly. Observation on the cell wall microstructure at 400 confirms the precipitation of nano-size Al3(Sc,Zr) particles that are coherent with Al matrix with an average radius of 4.1 nm. This suggests that these Al3(Sc,Zr) particles can inhibit the grain boundary sliding and dislocation movement, thus, strengthening the cell walls and increasing the compressive strength of the foams. In addition, the Sc2O3 protective film over the detective surface improves the corrosion resistance of the aged Al-0.16Sc-0.08Zr foam.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Huang
AU  - Chuanbiao Luo
AU  - Zhenzhong Fan
AU  - Xuchu Du
AU  - Junjie Pan
PY  - 2015/11
DA  - 2015/11
TI  - Mechanical Properties and Corrosion Behavior of Cellular Al-Sc-Zr Foams
BT  - Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SP  - 142
EP  - 146
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.33
DO  - 10.2991/icsmme-15.2015.33
ID  - Huang2015/11
ER  -