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

Palacios-Robledo, D.; Fresneda-García, J.; Lorenzo-Bonet, E.; Guerra-Fuentes, L.; Deaquino-Lara, R.; Hernández-Rodríguez, M.A.L.; García-Sánchez, E.

doi:10.1016/j.wear.2021.203680

Cited by 6 publications

(1 citation statement)

References 19 publications

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“…It is not always possible to improve both the strength of AA7075 by ECAP and its wear resistance in dry-sliding conditions. For example, ECAP of as-cast AA7075 increased its hardness to 100-120 HV [25], which is a relatively low value in comparison with the above-discussed results. However, these samples demonstrated a high wear rate when rubbed against a stainless steel ball compared to that of a AA7075 T6 aged sample.…”

Section: Introductioncontrasting

confidence: 50%

The Effect of Ultrafine-Grained (UFG) Structure Formed by Equal-Channel Angular Pressing in AA7075 on Wear and Friction in Sliding against Steel and Ceramic Counterbodies

Filippov,

Tarasov,

Filippova

2024

Metals

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The mechanical characteristics and sliding friction behaviors of AA7075 samples were studied in regard to structural states formed in them by ECAP and depending on the ECAP pass number. In addition, the effect of a counterbody’s material on the tribological characteristics of the samples was investigated by the examples of AISI 52100 steel, alumina Al2O3 and silicon nitride Si3N4. Vibration acceleration and acoustic emission signals with parameters such as acoustic emission energy and median frequency were used for characterizing the sliding regimes. The structural state and mechanical properties of the ECAPed AA7075 samples significantly affected their wear behaviors in dry sliding. The counterbody material had a significant influence on the formation of a transfer layer and the subsurface deformation of samples. The dynamic behavior of the tribosystem was studied and the relationship between the sliding parameters, vibrometry and acoustic emission signals was established.

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Section: Introductioncontrasting

confidence: 50%