20.500.12556/RUL-136334 The influence of shot peening and artificially ageing aluminium alloy 7075 on corrosion behaviour This paper investigates the corrosion of shot peened AA7075 aluminium alloys aged at different temperatures. The surface integrity of the hardened layer was evaluated with SEM, EDS, differential scanning calorimetry, hardness, and roughness measurements, and in the end also with corrosion resistance tests. The research results indicated that there were significant differences in precipitates distribution between aluminium alloys artificially aged at different temperatures. As the ageing temperature increases, the microhardness decreases, which influences the final roughness condition of the surface layer after shot peening. The results of potentiodynamic polarisation tests indicate that shot peening enables shifting the pitting potential to positive values, which ensures slightly higher corrosion resistance. SEM images confirmed the dissolution of the aluminium matrix near the separated iron-rich phases of the Al$_x$ form (Fe, Mn) by the action of galvanic cells. aluminium alloy 7075 shot peening ageing temperature pitting corrosion cyclic polarisation intermetallic particles aluminijeva zlitina 7075 udarno utrjevanje temperatura staranja jamičasta korozija ciklična polarizacija true false true Angleški jezik Slovenski jezik Članek v reviji 2022-04-25 09:55:46 2022-04-25 09:55:49 2023-05-17 03:56:54 0000-00-00 00:00:00 2022 0 0 13 str. iss. 9, art. 3094 Vol. 15 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1:621.787.6:669.715 1996-1944 10.3390/ma15093094 105816579 materials-15-03094-v2.pdf materials-15-03094-v2.pdf 1 1C38E43CD3730306D4F511B29A5580E7 cf9e56d64f6fb9d87896189895c4b408940b3178a4670f694e9cdedd3b36ede9 0be4864a-f3c1-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168869 https://www.mdpi.com/1996-1944/15/9/3094 1 0c79b316-c46d-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155915 Fakulteta za strojništvo Naravoslovnotehniška fakulteta 0 0 0