Comparison of mechanical and corrosion characteristics of alumin alloy D16 after different types of age hardening

This paper examines the mechanical and corrosion properties of D16 aluminum alloy after natural and artificial age hardening to maximum strength. The yield strength for these heat treatments differs only slightly. Rockwell hardness measurements revealed that natural age hardening is most intense during the first 30 minutes, after which it subsides, but continues for up to 8220 minutes. Accelerated fatigue testing using the Lokati method was conducted on non-standard specimens with a lower theoretical stress concentration factor. The loading type was tension-compression. Tests were conducted in air at room temperature with a cycle asymmetry of R = -1. Fatigue testing allowed us to determine fatigue limits, which differ to a greater extent than other mechanical properties. Corrosion testing in an environment supersaturated with chloride ions revealed significant differences in the depth and number of pits for specimens subjected to different age hardening processes.
EDN: GMXHZJ, https://elibrary/gmxhzj

References

[1] Kondratyev S.Yu., Shvetsov O.V. Operational capabilities of drill pipes made of aluminium alloys 1160 and 1953. Zagotovitelnye proizvodstva v mashinostroenii [Blanking Productions in Mechanical Engineering], 2017, vol. 15, no. 5, pp. 231–239. (In Russ.).

[2] Kulemina A.A., Kovenskiy I.M. Electrolytic nickel-molybdenum coatings applied to protect parts of oilfield equipment. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University], 2021, vol. 19, no. 1, pp. 35–41. (In Russ.).

[3] Nazarov V.D., Nazarov M.V., Astashina M.V. et al. Preparation of bottom waters to maintain reservoir pressure of low permeable oil reservoirs. Zashchita okruzhayushchey sredy v neftegazovom komplekse [Environmental Protection in Oil and Gas Complex], 2019, no. 2, pp. 22–28, doi: https://doi.org/10.33285/2411-7013-2019-2(287)-22-28 (in Russ.).

[4] Ilyushin P.Yu., Rudakova L.V., Kalinina E.V. et al. Reducing the negative impact of oil fields on hydrosphere objects when using reservoir water to maintain reservoir pressure. Ekologiya i promyshlennost Rossii [Ecology and Industry of Russia], 2022, vol. 26, no. 4, pp. 56–61, doi: https://doi.org/10.18412/1816-0395-2022-4-56-61 (in Russ.).

[5] Shvetsov O.V. Improving the operational reliability of drill pipes of aluminium alloys D16T and 1953T1. Nauchno-tekhnicheskie vedomosti SPbPU. Estestvennye i inzhenernye nauki [St. Petersburg State Polytechnic University Journal of Engineering Science and Technology], 2017, vol. 23, no. 1, pp. 236–246. (In Russ.).

[6] Sinyavskiy B.S., Kalinin V.D. Marine corrosion and protection of aluminum alloys according to their composition and structure. Zashchita metallov, 2005, vol. 41, no. 4, pp. 347–359. (In Russ.). (Eng. version: Prot. Met., 2005, vol. 41, no. 4, pp. 317–328, doi: https://doi.org/10.1007/s11124-005-0046-8)

[7] Chernova G.P., Kornienko L.P. Effect of chloride ions on electrochemical properties of anodized AV and D16 aluminum alloys in aqueous and glycerin-containing aqueous sodium sulfate solutions. Fizikokhimiya poverkhnosti i zashchita materialov, 2010, vol. 46, no. 6, pp. 651–656. (In Russ.). (Eng. version: Prot. Met. Phys. Chem. Surf., 2010, vol. 46, no. 6, pp. 721–726, doi: https://doi.org/10.1134/S207020511006016X)

[8] Shvetsov O.V., Alkhimenko A.A., Kondratyev S.Yu. Corrosion damages of boring pipes from aluminium alloys d16 and 1953 when operating in the conditions of oil wells. Nauchno-tekhnicheskie vedomosti SPbGPU, 2014, no. 3, pp. 180–191. (In Russ.).

[9] Shvetsov O.V., Kondratyev S.Yu., Shemyakinskiy B.A. Effect of protective coatings on serviceability of aluminium alloys in environment of oil production. Zagotovitelnye proizvodstva v mashinostroenii [Blanking Productions in Mechanical Engineering], 2020, vol. 18, no. 7, pp. 319–327. (In Russ.).

[10] Markushev M.V., Avtokratova E.V., Krymskiy S.V. et al. Strength and crack resistance of cryorolled and aged d16 aluminium alloy. Perspektivnye materialy, 2013, no. S15, pp. 74–77. (In Russ.).

[11] Garchani F.E., Lgaz H., Kaya S. et al. Effects of heat treatment on the corrosion behavior and mechanical properties of aluminum alloy 2024. J. Mater. Res. Technol., 2023, vol. 25, pp. 1355–1363, doi: https://doi.org/10.1016/j.jmrt.2023.05.278

[12] Ratchev P., Verlinden B., Smet P.De. Precipitation hardening of anAl–4.2 wt% Mg–0.6 wt% Cu alloy. Acta Mater., 1998, vol. 46, no. 10, pp. 3523–3533, doi: https://doi.org/10.1016/S1359-6454(98)00033-0

[13] Sadeghi-Nezhad D., Mousavi Anijdan S.H., Lee H. et al. The effect of cold rolling, double aging and overaging processes on the tensile property and precipitation of AA2024 alloy. J. Mater. Res. Technol., 2020, vol. 9, no. 6, pp. 15475–15485, doi: https://doi.org/10.1016/j.jmrt.2020.11.005

[14] El Garchani F.E., Rachid K.M. The study on characteristics of heat treatment of the AA2024 aluminum alloys. J. Multidiscip. Appl. Nat. Sci., 2023, vol. 3, no. 2, pp. 122–130, doi: https://doi.org/10.47352/jmans.2774-3047.166

[15] Lebedev E.L., Savchuk S.P. Fatigue resistance of aluminum alloy D16 in the presence of a stress concentrator. Trudy Voenno-kosmicheskoy akademii imeni A.F. Mozhayskogo [Proceedings of the Mozhaisky Military Space Academy], 2023, no. 689, pp. 215–225. (In Russ.).

[16] Koltsun Yu.I., Molyavko D.P., Ignatovskiy A.D. et al. 3D-kinetic characteristics of slow fatigue crack growth in the aluminum alloy D16T. Vestnik SGAU im. akademika S.P. Koroleva [Vestnik of the Samara State Aerospace University], 2014, no. 5–3, pp. 148–157. (In Russ.).

[17] Shanyavskiy A.A., Nikitin A.D., Palin-Luck T. Very high cycle fatigue of D16T aluminum alloy. Fizicheskaya mezomekhanika, 2020, vol. 23, no. 3, pp. 43–53, doi: https://doi.org/10.24411/1683-805X-2020-13005 (in Russ.). (Eng. version: Phys. Mesomech., 2021, vol. 24, no. 1, pp. 77–84, doi: https://doi.org/10.1134/S1029959921010112)

[18] Steuwer A., Rahman M., Shterenlikht A. et al. The evolution of crack-tip stresses during a fatigue overload event. Acta Mater., 2010, vol. 58, no. 11, pp. 4039–4052, doi: https://doi.org/10.1016/j.actamat.2010.03.013

[19] Antunes V., Serrano S., Branco R. et al. Fatigue crack growth in the 2050–T8 aluminium alloy. Int. J. Fatigue, 2018, vol. 115, pp. 79–88, doi: https://doi.org/10.1016/j.ijfatigue.2018.03.020

[20] Wang C., Chen X., Cheng L. et al. Very high cycle fatigue properties of 2024 aluminum alloy samples in three sizes. J. Phys.: Conf. Ser., 2012, art. 012032, doi: https://doi.org/10.1088/1742-6596/2012/1/012032

[21] Belyaev M.S., Khvatskiy K.K., Gorbovets M.A. Comparative analysis of national standards of RF and the USA on methods of metals fatigue testing. Trudy VIAM [Proceedings of VIAM], 2014, no. 9, doi: https://dx.doi.org/10.18577/2307-6046-2014-0-9-11-11 (in Russ.).

[22] Grinevich A.V., Erasov V.S., Yakusheva N.A. et al. Fatigue life of steel VKS-9 in conditions of symmetric loading "tension-compression" and "bending with rotation". Trudy VIAM [Proceedings of VIAM], 2017, no. 9, doi: https://doi.org/10.18577/2307-6046-2017-0-9-11-11 (in Russ.).

[23] Cavelyeva O.G. The influence of the heat processing and plastic deformation modes on the formation of the aluminum alloys structure. Vestnik SGAU im. akademika S.P. Koroleva [Vestnik of the Samara State Aerospace University], 2012, no. 1, pp. 183–195. (In Russ.).

[24] Kuskov K.V., Syzrantseva K.V. Comparison of fatigue characteristics of samples of different geometry from steel 09MN2S. Vestnik PNIPU. Mashinostroenie, materialovedenie [Bulletin PNRPU. Mechanical Engineering, Materials Science], 2024, vol. 26, no. 2, pp. 24–30. (In Russ.).

[25] Ngok T. Nguen, Kapralov V.M., Kolenko G.S. Effect of loading frequencies on fatigue resistance of materials. Nauchno-tekhnicheskie vedomosti SPbPU. Estestvennye i inzhenernye nauki [St. Petersburg State Polytechnic University Journal of Engineering Science and Technology], 2019, vol. 25, no. 2, pp. 68–77, doi: https://doi.org/10.18721/JEST.25205 (in Russ.).

[26] Borges M.F., Lopez-Crespo P., Antunes F.V. et al. Fatigue crack propagation analysis in 2024-T351 aluminium alloy using nonlinear parameters. Int. J. Fatigue, 2021, vol. 153, art. 106478, doi: https://doi.org/10.1016/j.ijfatigue.2021.106478