Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al
This work investigates the influence of parameters of initial ultrafine-grained (UFG) structure in commercially pure (CP) Al on annealing-induced hardening (AIH) and deformation-induced softening (DIS) effects. UFG structures were formed via processing CP Al by various methods of severe plastic defo...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2024-03-01
|
| Series: | International Journal of Lightweight Materials and Manufacture |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2588840423000549 |
| _version_ | 1827323133876502528 |
|---|---|
| author | Dinislam I. Sadykov Andrey E. Medvedev Maxim Yu. Murashkin Nariman A. Enikeev Demid A. Kirilenko Tatiana S. Orlova |
| author_facet | Dinislam I. Sadykov Andrey E. Medvedev Maxim Yu. Murashkin Nariman A. Enikeev Demid A. Kirilenko Tatiana S. Orlova |
| author_sort | Dinislam I. Sadykov |
| collection | DOAJ |
| description | This work investigates the influence of parameters of initial ultrafine-grained (UFG) structure in commercially pure (CP) Al on annealing-induced hardening (AIH) and deformation-induced softening (DIS) effects. UFG structures were formed via processing CP Al by various methods of severe plastic deformation (high pressure torsion (HPT), equal channel angular pressing (ECAP) and combination of ECAP and cold rolling (CR)). AIH and DIS effects are observed in all the studied UFG structures. However, HPT Al demonstrates large increase of strength due to annealing and drastic gain of ductility after subsequent additional deformation whereas in ECAP Al and ECAP + CR Al both effects are much less pronounced. Microstructure characterization by X-ray diffraction (XRD) analysis, electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) was performed for HPT Al and ECAP + CR Al in the three studied states: before and after annealing and after annealing and subsequent additional deformation. Analysis of microstructure evolution during annealing and subsequent additional deformation shows that the key microstructure parameter which is responsible for AIH and DIS effect is the change of dislocation density in grain interior in ECAP + CR Al, whereas in HPT Al the effects are related to the change of dislocation density at/near grain boundaries. In addition, outstanding combination of high strength (∼210 MPa), high electrical conductivity (∼62 %IACS) with sufficiently good ductility (7–10 %) and thermal stability (up to 150°С, at least) was achieved for ECAP + CR Al after annealing at 150 °C, 1h. |
| first_indexed | 2024-03-08T10:14:23Z |
| format | Article |
| id | doaj.art-2c361e5b376945f0b4d754a9179349b9 |
| institution | Directory Open Access Journal |
| issn | 2588-8404 |
| language | English |
| last_indexed | 2024-04-25T01:40:49Z |
| publishDate | 2024-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Journal of Lightweight Materials and Manufacture |
| spelling | doaj.art-2c361e5b376945f0b4d754a9179349b92024-03-08T05:19:10ZengKeAi Communications Co., Ltd.International Journal of Lightweight Materials and Manufacture2588-84042024-03-0172221232Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure AlDinislam I. Sadykov0Andrey E. Medvedev1Maxim Yu. Murashkin2Nariman A. Enikeev3Demid A. Kirilenko4Tatiana S. Orlova5Ioffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, Russia; Institute of Advanced Data Transfer Systems, Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Kronverkskiy Pr. 49, St. Petersburg 197101, Russia; Corresponding author. Ioffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, Russia.Ioffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, Russia; Laboratory 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, Russia; Laboratory of Metals and Alloys Under Extreme Impacts, Ufa University of Science and Technology, 32 Zaki Validi Str., Ufa 450076, 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, RussiaIoffe Institute, Politekhnicheskaya Str. 26, St. Petersburg 194021, RussiaThis work investigates the influence of parameters of initial ultrafine-grained (UFG) structure in commercially pure (CP) Al on annealing-induced hardening (AIH) and deformation-induced softening (DIS) effects. UFG structures were formed via processing CP Al by various methods of severe plastic deformation (high pressure torsion (HPT), equal channel angular pressing (ECAP) and combination of ECAP and cold rolling (CR)). AIH and DIS effects are observed in all the studied UFG structures. However, HPT Al demonstrates large increase of strength due to annealing and drastic gain of ductility after subsequent additional deformation whereas in ECAP Al and ECAP + CR Al both effects are much less pronounced. Microstructure characterization by X-ray diffraction (XRD) analysis, electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) was performed for HPT Al and ECAP + CR Al in the three studied states: before and after annealing and after annealing and subsequent additional deformation. Analysis of microstructure evolution during annealing and subsequent additional deformation shows that the key microstructure parameter which is responsible for AIH and DIS effect is the change of dislocation density in grain interior in ECAP + CR Al, whereas in HPT Al the effects are related to the change of dislocation density at/near grain boundaries. In addition, outstanding combination of high strength (∼210 MPa), high electrical conductivity (∼62 %IACS) with sufficiently good ductility (7–10 %) and thermal stability (up to 150°С, at least) was achieved for ECAP + CR Al after annealing at 150 °C, 1h.http://www.sciencedirect.com/science/article/pii/S2588840423000549Ultrafine-grained AlSevere plastic deformationMechanical propertiesAnnealing-induced hardeningDeformation-induced softening |
| spellingShingle | Dinislam I. Sadykov Andrey E. Medvedev Maxim Yu. Murashkin Nariman A. Enikeev Demid A. Kirilenko Tatiana S. Orlova Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al International Journal of Lightweight Materials and Manufacture Ultrafine-grained Al Severe plastic deformation Mechanical properties Annealing-induced hardening Deformation-induced softening |
| title | Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al |
| title_full | Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al |
| title_fullStr | Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al |
| title_full_unstemmed | Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al |
| title_short | Influence of ultrafine-grained structure parameters on the annealing-induced hardening and deformation-induced softening effects in pure Al |
| title_sort | influence of ultrafine grained structure parameters on the annealing induced hardening and deformation induced softening effects in pure al |
| topic | Ultrafine-grained Al Severe plastic deformation Mechanical properties Annealing-induced hardening Deformation-induced softening |
| url | http://www.sciencedirect.com/science/article/pii/S2588840423000549 |
| work_keys_str_mv | AT dinislamisadykov influenceofultrafinegrainedstructureparametersontheannealinginducedhardeninganddeformationinducedsofteningeffectsinpureal AT andreyemedvedev influenceofultrafinegrainedstructureparametersontheannealinginducedhardeninganddeformationinducedsofteningeffectsinpureal AT maximyumurashkin influenceofultrafinegrainedstructureparametersontheannealinginducedhardeninganddeformationinducedsofteningeffectsinpureal AT narimanaenikeev influenceofultrafinegrainedstructureparametersontheannealinginducedhardeninganddeformationinducedsofteningeffectsinpureal AT demidakirilenko influenceofultrafinegrainedstructureparametersontheannealinginducedhardeninganddeformationinducedsofteningeffectsinpureal AT tatianasorlova influenceofultrafinegrainedstructureparametersontheannealinginducedhardeninganddeformationinducedsofteningeffectsinpureal |