Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment
Influence of thermomechanical treatment (deformation, thermal cycling treatment in the temperature range of martensitic transformations B2-B19’) on the TiNi alloys’ mechanical behaviour and fracture was studied. Different states were considered, they are initial coarse-grained (CG), ultrafine-graine...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2019-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2019/47/matecconf_icmtmte18_00019.pdf |
| _version_ | 1818368335743549440 |
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| author | Churakova Anna Yudahina Anna Kayumova Elina Tolstov Nikita |
| author_facet | Churakova Anna Yudahina Anna Kayumova Elina Tolstov Nikita |
| author_sort | Churakova Anna |
| collection | DOAJ |
| description | Influence of thermomechanical treatment (deformation, thermal cycling treatment in the temperature range of martensitic transformations B2-B19’) on the TiNi alloys’ mechanical behaviour and fracture was studied. Different states were considered, they are initial coarse-grained (CG), ultrafine-grained (UFG) after ECAP (with a grain size of 200 nm), the state after ECAP and cold upsetting by 30% - UFG state with high dislocation density. It was shown that thermal cycling causes some increase in dislocation density, strength and microhardness in all the states. Thermal cycling of UFG alloys allows forming the states with non-equilibrium grain boundaries, with additional dislocations of “phase hardening”. The nature of the fracture was analysed in the TiNi alloy in various states. |
| first_indexed | 2024-12-13T23:06:19Z |
| format | Article |
| id | doaj.art-61b752c9b34844fe8f3d34d4594abede |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-13T23:06:19Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-61b752c9b34844fe8f3d34d4594abede2022-12-21T23:28:17ZengEDP SciencesMATEC Web of Conferences2261-236X2019-01-012980001910.1051/matecconf/201929800019matecconf_icmtmte18_00019Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatmentChurakova AnnaYudahina AnnaKayumova Elina0Tolstov Nikita1Ufa State Aviation Technical UniversityUfa State Aviation Technical UniversityInfluence of thermomechanical treatment (deformation, thermal cycling treatment in the temperature range of martensitic transformations B2-B19’) on the TiNi alloys’ mechanical behaviour and fracture was studied. Different states were considered, they are initial coarse-grained (CG), ultrafine-grained (UFG) after ECAP (with a grain size of 200 nm), the state after ECAP and cold upsetting by 30% - UFG state with high dislocation density. It was shown that thermal cycling causes some increase in dislocation density, strength and microhardness in all the states. Thermal cycling of UFG alloys allows forming the states with non-equilibrium grain boundaries, with additional dislocations of “phase hardening”. The nature of the fracture was analysed in the TiNi alloy in various states.https://www.matec-conferences.org/articles/matecconf/pdf/2019/47/matecconf_icmtmte18_00019.pdf |
| spellingShingle | Churakova Anna Yudahina Anna Kayumova Elina Tolstov Nikita Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment MATEC Web of Conferences |
| title | Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment |
| title_full | Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment |
| title_fullStr | Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment |
| title_full_unstemmed | Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment |
| title_short | Mechanical behavior and fractographic analysis of a TiNi alloy with various thermomechanical treatment |
| title_sort | mechanical behavior and fractographic analysis of a tini alloy with various thermomechanical treatment |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2019/47/matecconf_icmtmte18_00019.pdf |
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