Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion
The influence of additional deformation heat treatments (DHTs), implemented by two regimes: (1) annealing and small additional deformation by high-pressure torsion (HPT) at room temperature (RT) and (2) HPT at elevated temperature to 10 turns and small additional HPT at RT, has been studied on the m...
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MDPI AG
2023-09-01
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| Online Access: | https://www.mdpi.com/2075-4701/13/9/1570 |
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| author | Tatiana S. Orlova Aydar M. Mavlyutov Dinislam I. Sadykov Nariman A. Enikeev Maxim Yu. Murashkin |
| author_facet | Tatiana S. Orlova Aydar M. Mavlyutov Dinislam I. Sadykov Nariman A. Enikeev Maxim Yu. Murashkin |
| author_sort | Tatiana S. Orlova |
| collection | DOAJ |
| description | The influence of additional deformation heat treatments (DHTs), implemented by two regimes: (1) annealing and small additional deformation by high-pressure torsion (HPT) at room temperature (RT) and (2) HPT at elevated temperature to 10 turns and small additional HPT at RT, has been studied on the microstructure, mechanical properties and electrical conductivity of ultrafine-grained (UFG) Al-0.53Mg-0.27Zr (wt.%) alloy structured by HPT to 10 turns at RT. As is shown, both types of additional DHT lead to a substantial increase in plasticity (2–5 times) while maintaining high electrical conductivity (~53% IACS) and strength comprising 75–85% of the value in the pre-DHT state of the UFG alloy. The possible physical reasons for the revealed changes in the physical and mechanical properties are analyzed. Comparison of the strength and plasticity changes with the microstructure evolution after DHT of both types indicates that the increase in the density of introduced grain boundary dislocations is the most probable factor providing a tremendous increase in plasticity while maintaining a high level of strength in the UFG alloy under study. An outstanding combination of high strength (370 MPa), high elongation to failure (~15%) and significant electrical conductivity (~53% IACS) was achieved for the Al-Mg-Zr alloy. This combination of properties exceeds those obtained to date for this system, as well as for a number of other commercial conductor alloys based on the Al-Zr system. |
| first_indexed | 2024-03-10T22:27:41Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T22:27:41Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-15fadf5f7b444b818303f47e6d1d41882023-11-19T11:56:48ZengMDPI AGMetals2075-47012023-09-01139157010.3390/met13091570Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure TorsionTatiana S. Orlova0Aydar M. Mavlyutov1Dinislam I. Sadykov2Nariman A. Enikeev3Maxim Yu. Murashkin4Ioffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, RussiaIoffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, RussiaIoffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, RussiaLaboratory of Metals and Alloys under Extreme Impacts, Ufa University of Science and Technology, 32 Zaki Validi Str., Ufa 450076, RussiaIoffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, RussiaThe influence of additional deformation heat treatments (DHTs), implemented by two regimes: (1) annealing and small additional deformation by high-pressure torsion (HPT) at room temperature (RT) and (2) HPT at elevated temperature to 10 turns and small additional HPT at RT, has been studied on the microstructure, mechanical properties and electrical conductivity of ultrafine-grained (UFG) Al-0.53Mg-0.27Zr (wt.%) alloy structured by HPT to 10 turns at RT. As is shown, both types of additional DHT lead to a substantial increase in plasticity (2–5 times) while maintaining high electrical conductivity (~53% IACS) and strength comprising 75–85% of the value in the pre-DHT state of the UFG alloy. The possible physical reasons for the revealed changes in the physical and mechanical properties are analyzed. Comparison of the strength and plasticity changes with the microstructure evolution after DHT of both types indicates that the increase in the density of introduced grain boundary dislocations is the most probable factor providing a tremendous increase in plasticity while maintaining a high level of strength in the UFG alloy under study. An outstanding combination of high strength (370 MPa), high elongation to failure (~15%) and significant electrical conductivity (~53% IACS) was achieved for the Al-Mg-Zr alloy. This combination of properties exceeds those obtained to date for this system, as well as for a number of other commercial conductor alloys based on the Al-Zr system.https://www.mdpi.com/2075-4701/13/9/1570ultrafine-grained Al-Mg-Zr alloysdeformation heat treatmentmechanical propertieselectrical conductivitydeformation-induced softeningmicrostructure |
| spellingShingle | Tatiana S. Orlova Aydar M. Mavlyutov Dinislam I. Sadykov Nariman A. Enikeev Maxim Yu. Murashkin Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion Metals ultrafine-grained Al-Mg-Zr alloys deformation heat treatment mechanical properties electrical conductivity deformation-induced softening microstructure |
| title | Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion |
| title_full | Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion |
| title_fullStr | Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion |
| title_full_unstemmed | Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion |
| title_short | Effect of Deformation-Induced Plasticity in Low-Alloyed Al-Mg-Zr Alloy Processed by High-Pressure Torsion |
| title_sort | effect of deformation induced plasticity in low alloyed al mg zr alloy processed by high pressure torsion |
| topic | ultrafine-grained Al-Mg-Zr alloys deformation heat treatment mechanical properties electrical conductivity deformation-induced softening microstructure |
| url | https://www.mdpi.com/2075-4701/13/9/1570 |
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