Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy
This paper identifies the mechanisms of phase and structural transformations during severe plastic deformation by shearing under pressure (high-pressure torsion) of an Al-Zn-Mg-Fe-Ni-based aluminum alloy depending on different initial states of the material (an ingot after homogenizing annealing and...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-02-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/11/2/296 |
| _version_ | 1797412479244959744 |
|---|---|
| author | Irina Brodova Dmitriy Rasposienko Irina Shirinkina Anastasia Petrova Torgom Akopyan Elena Bobruk |
| author_facet | Irina Brodova Dmitriy Rasposienko Irina Shirinkina Anastasia Petrova Torgom Akopyan Elena Bobruk |
| author_sort | Irina Brodova |
| collection | DOAJ |
| description | This paper identifies the mechanisms of phase and structural transformations during severe plastic deformation by shearing under pressure (high-pressure torsion) of an Al-Zn-Mg-Fe-Ni-based aluminum alloy depending on different initial states of the material (an ingot after homogenizing annealing and a rod produced by radial-shear rolling). Scanning and transmission electron microscopy are used to determine the morphological and size characteristics of the structural constituents of the alloy after high-pressure torsion. It has been found that, irrespective of the history under high-pressure torsion, fragmentation and dynamic recrystallization results in a nanostructural alloy with a high microhardness of 2000 to 2600 MPa. Combined deformation processing (high-pressure torsion + radial-shear rolling) is shown to yield a nanocomposite reinforced with dispersed intermetallic phases of different origins, namely Al<sub>9</sub>FeNi eutectic aluminides and MgZn<sub>2</sub>, Al<sub>2</sub>Mg<sub>3</sub>Zn<sub>3</sub>, and Al<sub>3</sub>Zr secondary phases. The results of uniaxial tensile testing demonstrate good mechanical properties of the composite (ultimate tensile strength of 640 MPa, tensile yield strength of 628 MPa, and elongation of 5%). |
| first_indexed | 2024-03-09T05:03:41Z |
| format | Article |
| id | doaj.art-148d3c138db643d1afe61ab98e7f3ca0 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T05:03:41Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-148d3c138db643d1afe61ab98e7f3ca02023-12-03T12:57:19ZengMDPI AGMetals2075-47012021-02-0111229610.3390/met11020296Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni AlloyIrina Brodova0Dmitriy Rasposienko1Irina Shirinkina2Anastasia Petrova3Torgom Akopyan4Elena Bobruk5Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108 Ekaterinburg, RussiaMikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108 Ekaterinburg, RussiaMikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108 Ekaterinburg, RussiaMikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108 Ekaterinburg, RussiaMetal Forming Department, National University of Science and Technology MISiS, 119991 Moscow, RussiaInstitute of Physics of Advanced Materials, Ufa State Aviation Technical University, 450008 Ufa, RussiaThis paper identifies the mechanisms of phase and structural transformations during severe plastic deformation by shearing under pressure (high-pressure torsion) of an Al-Zn-Mg-Fe-Ni-based aluminum alloy depending on different initial states of the material (an ingot after homogenizing annealing and a rod produced by radial-shear rolling). Scanning and transmission electron microscopy are used to determine the morphological and size characteristics of the structural constituents of the alloy after high-pressure torsion. It has been found that, irrespective of the history under high-pressure torsion, fragmentation and dynamic recrystallization results in a nanostructural alloy with a high microhardness of 2000 to 2600 MPa. Combined deformation processing (high-pressure torsion + radial-shear rolling) is shown to yield a nanocomposite reinforced with dispersed intermetallic phases of different origins, namely Al<sub>9</sub>FeNi eutectic aluminides and MgZn<sub>2</sub>, Al<sub>2</sub>Mg<sub>3</sub>Zn<sub>3</sub>, and Al<sub>3</sub>Zr secondary phases. The results of uniaxial tensile testing demonstrate good mechanical properties of the composite (ultimate tensile strength of 640 MPa, tensile yield strength of 628 MPa, and elongation of 5%).https://www.mdpi.com/2075-4701/11/2/296Al-Zn-Mg alloynanomaterialsnanocompositehigh pressure torsionfragmentationdynamic recrystallization |
| spellingShingle | Irina Brodova Dmitriy Rasposienko Irina Shirinkina Anastasia Petrova Torgom Akopyan Elena Bobruk Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy Metals Al-Zn-Mg alloy nanomaterials nanocomposite high pressure torsion fragmentation dynamic recrystallization |
| title | Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy |
| title_full | Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy |
| title_fullStr | Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy |
| title_full_unstemmed | Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy |
| title_short | Effect of Severe Plastic Deformation on Structure Refinement and Mechanical Properties of the Al-Zn-Mg-Fe-Ni Alloy |
| title_sort | effect of severe plastic deformation on structure refinement and mechanical properties of the al zn mg fe ni alloy |
| topic | Al-Zn-Mg alloy nanomaterials nanocomposite high pressure torsion fragmentation dynamic recrystallization |
| url | https://www.mdpi.com/2075-4701/11/2/296 |
| work_keys_str_mv | AT irinabrodova effectofsevereplasticdeformationonstructurerefinementandmechanicalpropertiesofthealznmgfenialloy AT dmitriyrasposienko effectofsevereplasticdeformationonstructurerefinementandmechanicalpropertiesofthealznmgfenialloy AT irinashirinkina effectofsevereplasticdeformationonstructurerefinementandmechanicalpropertiesofthealznmgfenialloy AT anastasiapetrova effectofsevereplasticdeformationonstructurerefinementandmechanicalpropertiesofthealznmgfenialloy AT torgomakopyan effectofsevereplasticdeformationonstructurerefinementandmechanicalpropertiesofthealznmgfenialloy AT elenabobruk effectofsevereplasticdeformationonstructurerefinementandmechanicalpropertiesofthealznmgfenialloy |