Effects of Y on microstructure and corrosion behavior of Mg-8Zn-4Al alloy
- DOI
- 10.2991/ifeesm-17.2018.140How to use a DOI?
- Keywords
- Mg-8Zn-4Al alloy; Y; microstructure; corrosion resistance
- Abstract
Effects of Y on microstructure of Mg-8Zn-4Al alloy was investigated by optical microscope (OM),X-ray diffractometry (XRD).The corrosion resistance behavior of Mg-8Zn-4Al- xY alloy immersed in 3.5% NaCl solution was tested by static weight loss and potentiodynamic polarization. The results showed that Mg-8Zn-4Al alloy with Y addition can refine grain size of the matrix and alter the distribution of the -Mg32(Al,Zn)49 phase from continuous network morphology transition to evenly distributed .The microstructure of Mg-8Zn-4Al-0.5Y alloy was finely refined, but no new phase was found.The new phase of Mg-8Zn-4Al-1.0Y alloy was Mg24Al5Zn2Y19. The corrosion potential value of Mg-8Zn-4Al alloy was increased with Y addition,while the corrosion current density was reduced. The corrosion resistance of Mg-8Zn-4Al alloy can be enhanced obviously with Y addition. The corrosion rate of Mg-8Zn-4Al-0.5Y alloy was the lowest compared with the other alloy in this test. Mg-8Zn-4Al-0.5Y alloy has the best corrosion resistance among of the four kinds alloy.
- Copyright
- © 2018, 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/).
Cite this article
TY - CONF AU - Zhiling Bai AU - Bingke Qin PY - 2018/02 DA - 2018/02 TI - Effects of Y on microstructure and corrosion behavior of Mg-8Zn-4Al alloy BT - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017) PB - Atlantis Press SP - 748 EP - 751 SN - 2352-5401 UR - https://doi.org/10.2991/ifeesm-17.2018.140 DO - 10.2991/ifeesm-17.2018.140 ID - Bai2018/02 ER -