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Erschienen in: Journal of Materials Engineering and Performance 6/2020

15.06.2020

Dry Sliding Wear Behavior of AZ91 Alloy Processed by Rotary-Die Equal Channel Angular Pressing

verfasst von: Qiong Xu, Aibin Ma, Bassiouny Saleh, Reham Fathi, Yuhua Li, Jinghua Jiang, Chaoying Ni

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 6/2020

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Abstract

This research examines the effect of wear testing parameters on the wear behavior of AZ91 alloy prepared through rotary-die equal channel angular pressing (RD-ECAP). An AZ91 alloy was processed by RD-ECAP method at 573 K for up to 16 passes to reduce the grain size to ~ 5 µm. The properties of the alloys produced by RD-ECAP were compared with the as-received alloy. In order to measure the wear behavior of RD-ECAP manufactured alloy with the as-received alloy, wear tests were performed using ball-on-disk apparatus with specific loading conditions and varying sliding speeds. Surface analysis was used to show the presence of delamination, wear debris and plowing using scanning electron microscopes (SEM). The findings showed that, due to the grain refinement and homogeneity of the second phase distribution, RD-ECAP processed magnesium alloys possess increased wear resistance compared to the initial condition (unprocessed alloy), which makes them suitable for applications in aerospace, automotive and structural industries. Besides, the weight loss reduced with the increase of RD-ECAP pass numbers. Furthermore, increasing in applied load had a more dramatic effect on wear resistance compared to increasing sliding speed and sliding time.

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Metadaten
Titel
Dry Sliding Wear Behavior of AZ91 Alloy Processed by Rotary-Die Equal Channel Angular Pressing
verfasst von
Qiong Xu
Aibin Ma
Bassiouny Saleh
Reham Fathi
Yuhua Li
Jinghua Jiang
Chaoying Ni
Publikationsdatum
15.06.2020
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 6/2020
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-020-04883-x

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