Tribological analysis in Al–Mg–Zn alloy casting processed through equal channel angular pressing, compared with Al-7075 T6 alloy

This research shows an extensive analysis of the microstructural, mechanical, and tribological response in a cast Al–Mg–Zn alloy processed through ECAP, developed in order to obtain a material with similar properties of the Al-7075 T6 alloy. Microstructure of the Al–Mg–Zn alloy was analyzed through...

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Bibliographic Details
Published in:Wear 2021-07, Vol.476, p.203680, Article 203680
Main Authors: Palacios-Robledo, D., Fresneda-García, J., Lorenzo-Bonet, E., Guerra-Fuentes, L., Deaquino-Lara, R., Hernández-Rodríguez, M.A.L., García-Sánchez, E.
Format: Article
Language:English
Subjects:
Aluminum alloy
Aluminum base alloys
Casting alloys
Coefficient of friction
ECAP
Equal channel angular pressing
Magnesium base alloys
Mechanical properties
Microhardness
Microstructural modification
Microstructure
Sliding wear
Tribology
Wear mechanisms
Wear rate
Wear resistance
Zinc
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Summary:This research shows an extensive analysis of the microstructural, mechanical, and tribological response in a cast Al–Mg–Zn alloy processed through ECAP, developed in order to obtain a material with similar properties of the Al-7075 T6 alloy. Microstructure of the Al–Mg–Zn alloy was analyzed through optical and scanning electron microscope; on the other hand, wear tests were carried out on ball-on-disc tribometer according to the ASTM-G99. Before and after processing, mechanical properties were evaluated through microhardness measurements. Furthermore, wear mechanisms and friction coefficient in the Al–Mg–Zn alloy were analyzed and correlated with microstructure and mechanical properties after deformation process, while these results were compared with the properties of the Al-7075 T6 alloy. Results showed that ECAP process improves the mechanical properties, however, a wear resistance decrement in terms of wear rate and friction coefficient was observed. •Wear behavior of ECAP processed As cast was investigated and compared with AL-7075T6.•The wear mechanism observed has related with the fragmentation of intermetallics phases.•For a higher number of ECAP passes was observed a grains size reduction and redistribution and fragmentation of second phase particles.•The ECAP process show an improvement of mechanicals properties but a decrement of tribological behavior.
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2021.203680