Volume 17, Issue 3 (September 2020)                   IJMSE 2020, 17(3): 40-48 | Back to browse issues page


XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Niazi R, Tohidlou E, Khosravi H. Microstructure-Property Relationships in an Erbium-Modified Al-Si-Mg Alloy. IJMSE. 2020; 17 (3) :40-48
URL: http://ijmse.iust.ac.ir/article-1-1620-en.html
Abstract:   (2530 Views)
The effects of erbium (Er) addition at various weight percentages (0-0.6 wt.% at an interval of 0.2) on the microstructural characteristics, tensile response and wear properties of as-cast Al-7.5Si-0.5Mg alloy were evaluated. The microstructure of samples was examined by X-ray diffraction, optical microscopy and scanning electron microscopy. The obtained results demonstrated that the incorporation of erbium obviously decreased the α-Al grain size and eutectic Si, and altered the Si morphology from plate to semi-globular. Further addition of erbium (> 0.2 wt.%) did not alter the eutectic morphology and size. Moreover, the Al3Er phase was also observed in the eutectic region after modification. Out of the erbium contents used, 0.2 wt.% erbium showed the best influence on the tensile and wear properties. Compared with those of unmodified specimen, the values of ultimate tensile strength and elongation were enhanced by 31% and 39%, respectively with the introduction of 0.2 wt.% erbium. Additionally, a remarkable enhancement in the wear properties was observed with the addition of 0.2 wt.% erbium.
 
Full-Text [PDF 2361 kb]   (759 Downloads)    
Type of Study: Research Paper | Subject: Casting and Solidification

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and Permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2019 All Rights Reserved | Iranian Journal of Materials Science and Engineering

Designed & Developed by : Yektaweb