Abstract
The 7075 aluminum alloy was subjected to deep cryogenic treatment (DCT) at –196°C with liquid nitrogen for different hours. The wear and corrosion behaviors of the alloy were investigated by hardness, friction and wear, intergranular corrosion (IGC), and electrochemical corrosion tests. The microstructure of the alloy was observed by transmission electron microscope (TEM). The results showed that both the wear and corrosion resistance of the alloy treated with DCT could be improved. After the DCT 12 h, the matrix precipitates of the alloy were fine and homogeneously distributed, and the grain boundary precipitates of the alloy were discontinued, so that the alloy performed better comprehensive properties.
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ACKNOWLEDGMENTS
This research was financially supported by the program for National Key Research and Development Plan (2017YFB1104000), the National Natural Science Foundation of China (51 574 167), and the Research Fund for the Doctoral Program of Liaoning Province (20 170 520 337).
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Siyi Ma, Su, R., Wang, K. et al. Effect of Deep Cryogenic Treatment on Wear and Corrosion Resistance of an Al–Zn–Mg–Cu Alloy. Russ. J. Non-ferrous Metals 62, 89–96 (2021). https://doi.org/10.3103/S1067821221010144
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DOI: https://doi.org/10.3103/S1067821221010144