Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die
The present work aims to elucidate the role of microstructural changes induced by the extrusion with a forward backward oscillating die, thus verifying a novel approach to developing deformation methods for Mg-based alloys at ambient temperature. The main aim of this study was to show the process wh...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422006317 |
| _version_ | 1828786893839400960 |
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| author | Anna Dobkowska Bogusława Adamczyk-Cieślak Monika Chlewicka Aleksandra Towarek Aleksandra Zielińska Milena Koralnik Dariusz Kuc Jarosław Mizera |
| author_facet | Anna Dobkowska Bogusława Adamczyk-Cieślak Monika Chlewicka Aleksandra Towarek Aleksandra Zielińska Milena Koralnik Dariusz Kuc Jarosław Mizera |
| author_sort | Anna Dobkowska |
| collection | DOAJ |
| description | The present work aims to elucidate the role of microstructural changes induced by the extrusion with a forward backward oscillating die, thus verifying a novel approach to developing deformation methods for Mg-based alloys at ambient temperature. The main aim of this study was to show the process which enables the reduction of the hcp-structured AZ31 rods (40 mm in diameter) to the wires with diameters of 6 mm, 4 mm and 2 mm, without initial preheating of the billet. In contrary to the studies up to date, the significant microstructure refinement led to the decline in corrosion resistance of the wires with 6 mm and 4 mm diameters slightly relative to the original material. The highest extrusion ratio resulted in the formation of an ultrafine, equiaxed microstructure, which caused a tremendous corrosion resistance decrease. The significant decline in corrosion resistance of this alloy is a result of the highest number of HAGBs and is promoted by the accumulation of tangled dislocations. Summing up, the corrosion behaviors of the extruded alloys were mainly affected by the recrystallization stage that occurred during deformation, and not by the grain size alone. |
| first_indexed | 2024-12-12T00:19:33Z |
| format | Article |
| id | doaj.art-a4b61bcb0ebd416f9b1ddc40d50b55c1 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-12T00:19:33Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a4b61bcb0ebd416f9b1ddc40d50b55c12022-12-22T00:44:45ZengElsevierJournal of Materials Research and Technology2238-78542022-05-011844864496Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating dieAnna Dobkowska0Bogusława Adamczyk-Cieślak1Monika Chlewicka2Aleksandra Towarek3Aleksandra Zielińska4Milena Koralnik5Dariusz Kuc6Jarosław Mizera7Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, Poland; Corresponding author.Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, PolandInstitute of Materials Engineering, Silesian University of Technology, Krasińskiego 8, Katowice, 40-019, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, Warsaw, 02-507, PolandThe present work aims to elucidate the role of microstructural changes induced by the extrusion with a forward backward oscillating die, thus verifying a novel approach to developing deformation methods for Mg-based alloys at ambient temperature. The main aim of this study was to show the process which enables the reduction of the hcp-structured AZ31 rods (40 mm in diameter) to the wires with diameters of 6 mm, 4 mm and 2 mm, without initial preheating of the billet. In contrary to the studies up to date, the significant microstructure refinement led to the decline in corrosion resistance of the wires with 6 mm and 4 mm diameters slightly relative to the original material. The highest extrusion ratio resulted in the formation of an ultrafine, equiaxed microstructure, which caused a tremendous corrosion resistance decrease. The significant decline in corrosion resistance of this alloy is a result of the highest number of HAGBs and is promoted by the accumulation of tangled dislocations. Summing up, the corrosion behaviors of the extruded alloys were mainly affected by the recrystallization stage that occurred during deformation, and not by the grain size alone.http://www.sciencedirect.com/science/article/pii/S2238785422006317CorrosionGrain refinementMicrostructureGrain size distributionExtrusion rateMagnesium alloy |
| spellingShingle | Anna Dobkowska Bogusława Adamczyk-Cieślak Monika Chlewicka Aleksandra Towarek Aleksandra Zielińska Milena Koralnik Dariusz Kuc Jarosław Mizera Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die Journal of Materials Research and Technology Corrosion Grain refinement Microstructure Grain size distribution Extrusion rate Magnesium alloy |
| title | Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die |
| title_full | Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die |
| title_fullStr | Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die |
| title_full_unstemmed | Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die |
| title_short | Evolution of microstructure dependent corrosion properties of ultrafine AZ31 under conditions of extrusion with a forward backward oscillating die |
| title_sort | evolution of microstructure dependent corrosion properties of ultrafine az31 under conditions of extrusion with a forward backward oscillating die |
| topic | Corrosion Grain refinement Microstructure Grain size distribution Extrusion rate Magnesium alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422006317 |
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