Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals
The data of a comparative analysis of the structure and hardness of pure metals with a face-centered cubic lattice – aluminum, nickel and copper, subjected to complex thermomechanical treatment (TMT), including isothermal cryogenic rolling at liquid nitrogen temperature and subsequent high-density e...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Togliatti State University
2023-12-01
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| Series: | Frontier Materials & Technologies |
| Subjects: | |
| Online Access: | https://www.vektornaukitech.ru/jour/article/view/898/840 |
| _version_ | 1797357424400662528 |
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| author | Mikhail V. Markushev Elena V. Avtokratova Aigul Kh. Valeeva Irshat Sh. Valeev Rafis R. Ilyasov Stanislav V. Krymsky Oleg Sh. Sitdikov |
| author_facet | Mikhail V. Markushev Elena V. Avtokratova Aigul Kh. Valeeva Irshat Sh. Valeev Rafis R. Ilyasov Stanislav V. Krymsky Oleg Sh. Sitdikov |
| author_sort | Mikhail V. Markushev |
| collection | DOAJ |
| description | The data of a comparative analysis of the structure and hardness of pure metals with a face-centered cubic lattice – aluminum, nickel and copper, subjected to complex thermomechanical treatment (TMT), including isothermal cryogenic rolling at liquid nitrogen temperature and subsequent high-density electropulse treatment (EPT) were presented. The main stages, features and advantages of TMT, which first ensure strong work hardening of the processed material due to deformation at low temperatures and then its ultra-fast contact electropulse heating up to a specified temperature, were considered. A multi-level analysis of the metals structure evolution due to TMT was carried out using modern methods of scanning electron microscopy and X-ray diffractometry, recording a wide range of its linear and angular parameters. The kinetics and nature of the processes of the metals structure evolution under cryogenic rolling and EPT, their driving forces and controlling factors, as well as general patterns and temperature intervals of activation of the deformation structure recovery and recrystallization influenced by an electric pulse are identified and discussed. Based on the results of the analysis of the structural and mechanical behaviour of metals, it was concluded that the combination of severe plastic cryogenic deformation and a single-step treatment with ultrashort alternating current pulses is an effective way to obtain semi-finished products with controlled parameters of their structure and properties, including high-strength ultrafine-grain rolled products. At that the phenomenology and nature of the strengthening/softening of metals during cryogenic rolling and subsequent electropulsing are similar to those observed under cold rolling and furnace annealing. |
| first_indexed | 2024-03-08T14:44:51Z |
| format | Article |
| id | doaj.art-46b3562020b54c8abb9305b98bde3a13 |
| institution | Directory Open Access Journal |
| issn | 2782-4039 2782-6074 |
| language | English |
| last_indexed | 2024-03-08T14:44:51Z |
| publishDate | 2023-12-01 |
| publisher | Togliatti State University |
| record_format | Article |
| series | Frontier Materials & Technologies |
| spelling | doaj.art-46b3562020b54c8abb9305b98bde3a132024-01-11T12:54:38ZengTogliatti State UniversityFrontier Materials & Technologies2782-40392782-60742023-12-014536210.18323/2782-4039-2023-4-66-5Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metalsMikhail V. Markushev0Elena V. Avtokratova1Aigul Kh. Valeeva2https://orcid.org/0000-0003-4305-4538Irshat Sh. Valeev3https://orcid.org/0009-0002-5162-7324Rafis R. Ilyasov4https://orcid.org/0000-0003-0195-1206Stanislav V. Krymsky5https://orcid.org/0000-0002-1534-3239Oleg Sh. Sitdikov6Institute for Metals Superplasticity Problems of RAS, Ufa, RussiaInstitute for Metals Superplasticity Problems of RAS, Ufa, RussiaInstitute for Metals Superplasticity Problems of RAS, Ufa, RussiaInstitute for Metals Superplasticity Problems of RAS, Ufa, RussiaInstitute for Metals Superplasticity Problems of RAS, Ufa, RussiaInstitute for Metals Superplasticity Problems of RAS, Ufa, RussiaInstitute for Metals Superplasticity Problems of RAS, Ufa, RussiaThe data of a comparative analysis of the structure and hardness of pure metals with a face-centered cubic lattice – aluminum, nickel and copper, subjected to complex thermomechanical treatment (TMT), including isothermal cryogenic rolling at liquid nitrogen temperature and subsequent high-density electropulse treatment (EPT) were presented. The main stages, features and advantages of TMT, which first ensure strong work hardening of the processed material due to deformation at low temperatures and then its ultra-fast contact electropulse heating up to a specified temperature, were considered. A multi-level analysis of the metals structure evolution due to TMT was carried out using modern methods of scanning electron microscopy and X-ray diffractometry, recording a wide range of its linear and angular parameters. The kinetics and nature of the processes of the metals structure evolution under cryogenic rolling and EPT, their driving forces and controlling factors, as well as general patterns and temperature intervals of activation of the deformation structure recovery and recrystallization influenced by an electric pulse are identified and discussed. Based on the results of the analysis of the structural and mechanical behaviour of metals, it was concluded that the combination of severe plastic cryogenic deformation and a single-step treatment with ultrashort alternating current pulses is an effective way to obtain semi-finished products with controlled parameters of their structure and properties, including high-strength ultrafine-grain rolled products. At that the phenomenology and nature of the strengthening/softening of metals during cryogenic rolling and subsequent electropulsing are similar to those observed under cold rolling and furnace annealing.https://www.vektornaukitech.ru/jour/article/view/898/840fcc metalscryogenic deformationcryogenic rollingelectric pulse treatmentultrafine-grain structure |
| spellingShingle | Mikhail V. Markushev Elena V. Avtokratova Aigul Kh. Valeeva Irshat Sh. Valeev Rafis R. Ilyasov Stanislav V. Krymsky Oleg Sh. Sitdikov Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals Frontier Materials & Technologies fcc metals cryogenic deformation cryogenic rolling electric pulse treatment ultrafine-grain structure |
| title | Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals |
| title_full | Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals |
| title_fullStr | Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals |
| title_full_unstemmed | Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals |
| title_short | Combination of cryogenic deformation and electropulse processing as a way to produce ultrafine-grain metals |
| title_sort | combination of cryogenic deformation and electropulse processing as a way to produce ultrafine grain metals |
| topic | fcc metals cryogenic deformation cryogenic rolling electric pulse treatment ultrafine-grain structure |
| url | https://www.vektornaukitech.ru/jour/article/view/898/840 |
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