Affiliation:
1. Institute of Strength Physics and Materials Sciences Siberian Branch of Russian Academy of Science, Per. Academicheskii 2/4, 634055 Tomsk, Russia
Abstract
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.
Funder
government statement of work for ISPMS SB RAS
Reference51 articles.
1. A study on sliding wear of a 7075 aluminum alloy;Kayali;Wear,2004
2. Transfer, mixing and associated chemical and mechanical processes during the sliding of ductile materials;Rigney;Wear,2000
3. Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions;Yang;Rare Met.,2022
4. Statistical analysis on influence of heat treatment, load and velocity on the dry sliding wear behavior of aluminium alloy 7075;Shanmughasundaram;Mater. Phys. Mech.,2015
5. Sliding Wear Behaviour of Aluminium Alloy 7075 Grade in Dry and Wet Conditions;Bhatia;Int. J. Sci. Res. Dev.,2016