In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples
The presence of dislocations significantly modifies the mechanical properties of crystalline solids. Severe plastic deformation (SPD) and the most used SPD process – the Equal Channel Angular Pressing (ECAP), affect the multiplication and localized accumulation of dislocations. This research is rela...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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University North
2023-01-01
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| Series: | Tehnički Glasnik |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/434974 |
| _version_ | 1797206556156100608 |
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| author | Zdenka Keran Amalija Horvatić Novak Andrej Razumić Biserka Runje Petar Piljek |
| author_facet | Zdenka Keran Amalija Horvatić Novak Andrej Razumić Biserka Runje Petar Piljek |
| author_sort | Zdenka Keran |
| collection | DOAJ |
| description | The presence of dislocations significantly modifies the mechanical properties of crystalline solids. Severe plastic deformation (SPD) and the most used SPD process – the Equal Channel Angular Pressing (ECAP), affect the multiplication and localized accumulation of dislocations. This research is related to the observation of dislocation pile-up and significant reduction of the crystalline grain size caused by severe deformations in the ECAP process of the widely used aluminium material (Al 99.5%). Because of its lightweight, the application of Al 99.5 % can pose a challenge for the aviation and space industry, especially since its mechanical properties limit its application. Improving these mechanical properties can extend its applicability in cases of demanding constructions as well as influence the final product cost. As a confirmation of SPD in-fluence on mechanical properties, material hardness has been examined and described. Dislocation monitoring is enabled using the light and electron microscopy and AFM (Atomic Force Microscope) device. A numerical simulation of the Equal Channel Angular Pressing process using the ABAQUS software package determined the representative area of the most severe deformation. |
| first_indexed | 2024-04-24T09:08:53Z |
| format | Article |
| id | doaj.art-e9c275b7f33141b79ee2ef986f606809 |
| institution | Directory Open Access Journal |
| issn | 1846-6168 1848-5588 |
| language | English |
| last_indexed | 2024-04-24T09:08:53Z |
| publishDate | 2023-01-01 |
| publisher | University North |
| record_format | Article |
| series | Tehnički Glasnik |
| spelling | doaj.art-e9c275b7f33141b79ee2ef986f6068092024-04-15T18:30:24ZengUniversity NorthTehnički Glasnik1846-61681848-55882023-01-0117223123610.31803/tg-20230424191508In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium SamplesZdenka Keran0Amalija Horvatić Novak1Andrej Razumić2Biserka Runje3Petar Piljek4Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb 10000, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb 10000, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb 10000, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb 10000, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb 10000, CroatiaThe presence of dislocations significantly modifies the mechanical properties of crystalline solids. Severe plastic deformation (SPD) and the most used SPD process – the Equal Channel Angular Pressing (ECAP), affect the multiplication and localized accumulation of dislocations. This research is related to the observation of dislocation pile-up and significant reduction of the crystalline grain size caused by severe deformations in the ECAP process of the widely used aluminium material (Al 99.5%). Because of its lightweight, the application of Al 99.5 % can pose a challenge for the aviation and space industry, especially since its mechanical properties limit its application. Improving these mechanical properties can extend its applicability in cases of demanding constructions as well as influence the final product cost. As a confirmation of SPD in-fluence on mechanical properties, material hardness has been examined and described. Dislocation monitoring is enabled using the light and electron microscopy and AFM (Atomic Force Microscope) device. A numerical simulation of the Equal Channel Angular Pressing process using the ABAQUS software package determined the representative area of the most severe deformation.https://hrcak.srce.hr/file/434974aluminium (Al)atomic force microscope (AFM)equal channel angular pressing (ECAP)hardnesssevere plastic deformation (SPD) |
| spellingShingle | Zdenka Keran Amalija Horvatić Novak Andrej Razumić Biserka Runje Petar Piljek In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples Tehnički Glasnik aluminium (Al) atomic force microscope (AFM) equal channel angular pressing (ECAP) hardness severe plastic deformation (SPD) |
| title | In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples |
| title_full | In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples |
| title_fullStr | In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples |
| title_full_unstemmed | In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples |
| title_short | In-Crystal Dislocation Behaviour and Hardness Changes in the Case of Severe Plastic Deformation of Aluminium Samples |
| title_sort | in crystal dislocation behaviour and hardness changes in the case of severe plastic deformation of aluminium samples |
| topic | aluminium (Al) atomic force microscope (AFM) equal channel angular pressing (ECAP) hardness severe plastic deformation (SPD) |
| url | https://hrcak.srce.hr/file/434974 |
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