The Vacancy-hardening Properties in Water-quenched Fe-Al Alloys

DOI

10.2991/icmsa-15.2015.7How to use a DOI?

Keywords

Vacancy-hardening, Heat Treatments, Water-quenched Fe-Al Alloys.

Abstract

Fe-Al alloys with different Al contents were prepared with commercially pure Fe and Al in a vacuum induction furnace. The hardness of the Fe-Al alloys with different Al content and heat treatments was measured using a Vickers-hardness tester of HVS-5, applying a load of 9.8 N and keeping for 8 s. In order to detect the lattice strain of the specimens, X-ray diffraction (XRD) experiments with CuK radiation ( =1.5406 ) were completed at room temperature for Fe62Al38 specimen with different heat treatments. It was shown that the hardness of the furnace-cooled Fe-Al alloys increases with increasing Al content when Al content is less than 23 (at.)% Al and then decreases when more than 23 (at.)% Al. The furnace-cooled Fe77Al23 alloy has the largest hardness value among all furnace-cooled alloys. The effect of quenching on the hardness of the Fe77Al23 and Fe71Al29 alloys can be obviously observed. The hardness of the Fe62Al38 alloy increases obviously with increasing quenching temperature. The hardening effect resulted from thermal vacancies can be reduced by the ageing at low temperature.

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  - Z.C. Zhou
AU  - J. Du
AU  - Y.K. Zhang
AU  - Y.P. Zhang
AU  - S.Y. Gu
PY  - 2014/06
DA  - 2014/06
TI  - The Vacancy-hardening Properties in Water-quenched Fe-Al Alloys
BT  - Proceedings of the 2015 International Conference on Material Science and Applications
PB  - Atlantis Press
SP  - 37
EP  - 41
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.7
DO  - 10.2991/icmsa-15.2015.7
ID  - Zhou2014/06
ER  -