Abstract
Residual stresses on aluminum parts can be modified during heat treatments. During solution heat treatment, quenching, and aging, metallurgical transformations combined with thermal gradients lead to a modification of parts properties. Quench and aging treatments sensitivity of AA 7175 aluminum alloy components is addressed in this work. Samples have been subjected to various quenching and aging treatments to verify the actual effect of the treatment parameters on their residual stresses. After a solution heat treatment, quenching has been performed in agitated and non-agitated water at room temperature, as well as at 67°C. The effects of the aging treatment (T74) and stress relief treatment have also been studied. Residual stresses determined by the contour method are reported and it is found that for the specimens used in this work, quenching into agitated water had no significant effect while warm water quench, T74 aging, and stress relief treatments substantially reduce the residual stresses.
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This study was financially supported by the Natural Sciences and Engineering Research Council of Canada (NSERC).
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The authors’ contributions are as follows: Kadiata Ba, Julie Levesque, and Augustin Gakwaya conceived, planned, and carried out the experiments; Kadiata Ba, Julie Levesque, Augustin Gakwaya, and Sasan Sattarpanah Karganroudi contributed to the interpretation of the results. Kadiata Ba and Sasan Sattarpanah Karganroudi took the lead and contributed actively in writing the manuscript; all authors provided critical feedback and helped shape the research, analysis, and manuscript.
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Ba, K., Levesque, J., Gakwaya, A. et al. Residual stress investigation of quenched and artificially aged aluminum alloy 7175. Int J Adv Manuf Technol 116, 1537–1553 (2021). https://doi.org/10.1007/s00170-021-07520-6
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DOI: https://doi.org/10.1007/s00170-021-07520-6