Volume 7, Issue 4 (Autumn 2010 2010)                   IJMSE 2010, 7(4): 30-34 | Back to browse issues page

XML Print


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

Y. Fouad. FATIGUE BEHAVIOUR OFA ROLLED AZ31 MAGNESIUM ALLOYS PREPARED BY EPAND BB CONDITIONS. IJMSE 2010; 7 (4) :30-34
URL: http://ijmse.iust.ac.ir/article-1-310-en.html
Abstract:   (28737 Views)
Abstract: Rotating bending fatigue tests have been performed using smooth specimens of a rolled AZ31 magnesium alloy in laboratory air at ambient temperature. Fatigue strength and characteristic was evaluated and fracture mechanism was discussed on the basis fracture surface analysis. Electrical polishing (EP) as well as deep rolling (ball burnishing (BB)) U-notched specimens were performed on two groups of samples, to evaluate optimum conditions for fatigue life. The microstructure and tensile properties of roll cast (RC) Mg- 3% Al- 1% Zn (AZ31) was investigated. The fatigue strength of 107 cycles around 100 MPa for deep rolling while it was around 40 MPa for Electrical polishing. It was very important to understand the effect of (ball burnishing (BB)) conditions on the hardness of the surface through to the core. The two procedures improved the fatigue performance, but better improve in results were found in ball burnishing. The growth of small cracks initiated at the surface coincided with the FCP characteristic after allowing for crack closure for large cracks, but the operative fracture mechanisms were different between small and large cracks. At the subsurface crack initiation site, smooth facets were always present regardless of applied stress level.
Full-Text [PDF 224 kb]   (5712 Downloads)    
Type of Study: Research Paper | Subject: Surfe coating and corrosion

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

Send email to the article author


User comments
Comment sent by ghaferi_z@yahoo.com on 2011/04/27
its excellent

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

© 2022 All Rights Reserved | Iranian Journal of Materials Science and Engineering

Designed & Developed by : Yektaweb