The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners
Abstract The study aimed to examine the effect of the hydrostatic extrusion (HE) process on the machinability of Ti grade 2 (Ti) in the turning process. After the deformation with true strain ɛ = 2.28, the microstructure was significantly refined to a grain size of 100 nm, resulting in an increase i...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-20339-9 |
| _version_ | 1811253716474396672 |
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| author | Jacek Skiba Mariusz Kulczyk Sylwia Przybysz-Gloc Monika Skorupska Krzysztof Niczyporuk |
| author_facet | Jacek Skiba Mariusz Kulczyk Sylwia Przybysz-Gloc Monika Skorupska Krzysztof Niczyporuk |
| author_sort | Jacek Skiba |
| collection | DOAJ |
| description | Abstract The study aimed to examine the effect of the hydrostatic extrusion (HE) process on the machinability of Ti grade 2 (Ti) in the turning process. After the deformation with true strain ɛ = 2.28, the microstructure was significantly refined to a grain size of 100 nm, resulting in an increase in the mechanical properties, UTS strength by 190%, YS yield strength by 230%Cutting forces for Ti in the initial state and after HE were analyzed at cutting depths a p = 0.3 mm and 0.5 mm, the variables were cutting speed V c (20, 30 and 50 m/min) and feed rate f (0.08 and 0.13 m/s).The impact of the microstructure refinement in Ti after HE on the high cutting depth machinability deterioration (a p = 0.7 mm) was identified. This phenomenon is particularly noticeable at lower cutting speeds V c = 20 and 30 m/min at which cutting forces are higher. Application tests of Ti after HE showed a significantly lower susceptibility to buckling during threading. As a result of the tests carried out for the Ti in the initial state, it was not possible to achieve the tolerance of pitch diameter of the thread required by standards, d 2 at two of the three cutting depths tested. In turn, for the Ti after HE, the thread tolerances required by the standards were achieved for all tested cutting depths. |
| first_indexed | 2024-04-12T16:55:15Z |
| format | Article |
| id | doaj.art-08fa493c812b47a588c3a92d72a14c2e |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T16:55:15Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-08fa493c812b47a588c3a92d72a14c2e2022-12-22T03:24:15ZengNature PortfolioScientific Reports2045-23222022-09-0112111310.1038/s41598-022-20339-9The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fastenersJacek Skiba0Mariusz Kulczyk1Sylwia Przybysz-Gloc2Monika Skorupska3Krzysztof Niczyporuk4Institute of High Pressure Physics, Polish Academy of Sciences (Unipress)Institute of High Pressure Physics, Polish Academy of Sciences (Unipress)Institute of High Pressure Physics, Polish Academy of Sciences (Unipress)Institute of High Pressure Physics, Polish Academy of Sciences (Unipress)Center of Innovation and Expertise, Association of Polish Engineers and Mechanical Technicians, Warsaw DepartmentAbstract The study aimed to examine the effect of the hydrostatic extrusion (HE) process on the machinability of Ti grade 2 (Ti) in the turning process. After the deformation with true strain ɛ = 2.28, the microstructure was significantly refined to a grain size of 100 nm, resulting in an increase in the mechanical properties, UTS strength by 190%, YS yield strength by 230%Cutting forces for Ti in the initial state and after HE were analyzed at cutting depths a p = 0.3 mm and 0.5 mm, the variables were cutting speed V c (20, 30 and 50 m/min) and feed rate f (0.08 and 0.13 m/s).The impact of the microstructure refinement in Ti after HE on the high cutting depth machinability deterioration (a p = 0.7 mm) was identified. This phenomenon is particularly noticeable at lower cutting speeds V c = 20 and 30 m/min at which cutting forces are higher. Application tests of Ti after HE showed a significantly lower susceptibility to buckling during threading. As a result of the tests carried out for the Ti in the initial state, it was not possible to achieve the tolerance of pitch diameter of the thread required by standards, d 2 at two of the three cutting depths tested. In turn, for the Ti after HE, the thread tolerances required by the standards were achieved for all tested cutting depths.https://doi.org/10.1038/s41598-022-20339-9 |
| spellingShingle | Jacek Skiba Mariusz Kulczyk Sylwia Przybysz-Gloc Monika Skorupska Krzysztof Niczyporuk The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners Scientific Reports |
| title | The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners |
| title_full | The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners |
| title_fullStr | The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners |
| title_full_unstemmed | The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners |
| title_short | The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners |
| title_sort | impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine grained ti grade 2 intended for fasteners |
| url | https://doi.org/10.1038/s41598-022-20339-9 |
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