The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA
The wire drawing mechanic of Ti-49.82Ni (at. %) Shape Memory Alloy (SMA) was investigated through the true stress-strain curves and drawing stresses. The tensile tested solution treated wire presented a four steps elongation at temperatures below the austenite finish temperature (AF), and a conventi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2018-03-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/pdf/mr/v21n3/1516-1439-mr-1980-5373-MR-2017-0944.pdf |
| _version_ | 1818752972827394048 |
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| author | André da Silva Antunes Osmar de Sousa Santos Leonardo Kenji Fudo Naito Odair Dona Rigo Jorge Otubo |
| author_facet | André da Silva Antunes Osmar de Sousa Santos Leonardo Kenji Fudo Naito Odair Dona Rigo Jorge Otubo |
| author_sort | André da Silva Antunes |
| collection | DOAJ |
| description | The wire drawing mechanic of Ti-49.82Ni (at. %) Shape Memory Alloy (SMA) was investigated through the true stress-strain curves and drawing stresses. The tensile tested solution treated wire presented a four steps elongation at temperatures below the austenite finish temperature (AF), and a conventional one-step behavior above the martensite deformation temperature (MD). The tensile yield stress for the formation of detwinned martensite (DTM) or stress-induced martensite (SIM) increased as the testing temperature increased; however, for larger deformation, the behavior reversed. The efficiency of drawing work, which is the ratio of uniform work to total work, increased from 10% for 0.07 mm2.mm-2 area reduction at 25 °C to 50% for 0.21 mm2.mm-2 at 110 °C. Therefore, wire drawing temperature and area reduction should be combined to increase the efficiency, taking into account the desired properties with reasonable workability. Furthermore, transformation work should be considered on wire drawing shape memory alloys as phase transformation occurs in temperatures below MD. |
| first_indexed | 2024-12-18T04:59:58Z |
| format | Article |
| id | doaj.art-63f4958e97fe42dda37ff8e5044f3f3b |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-18T04:59:58Z |
| publishDate | 2018-03-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-63f4958e97fe42dda37ff8e5044f3f3b2022-12-21T21:20:11ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392018-03-0121310.1590/1980-5373-mr-2017-0944The Wire Drawing Mechanics of Near-Equiatomic NiTi SMAAndré da Silva Antuneshttps://orcid.org/0000-0003-3991-8583Osmar de Sousa SantosLeonardo Kenji Fudo NaitoOdair Dona RigoJorge Otubohttps://orcid.org/0000-0001-8167-1794The wire drawing mechanic of Ti-49.82Ni (at. %) Shape Memory Alloy (SMA) was investigated through the true stress-strain curves and drawing stresses. The tensile tested solution treated wire presented a four steps elongation at temperatures below the austenite finish temperature (AF), and a conventional one-step behavior above the martensite deformation temperature (MD). The tensile yield stress for the formation of detwinned martensite (DTM) or stress-induced martensite (SIM) increased as the testing temperature increased; however, for larger deformation, the behavior reversed. The efficiency of drawing work, which is the ratio of uniform work to total work, increased from 10% for 0.07 mm2.mm-2 area reduction at 25 °C to 50% for 0.21 mm2.mm-2 at 110 °C. Therefore, wire drawing temperature and area reduction should be combined to increase the efficiency, taking into account the desired properties with reasonable workability. Furthermore, transformation work should be considered on wire drawing shape memory alloys as phase transformation occurs in temperatures below MD.http://www.scielo.br/pdf/mr/v21n3/1516-1439-mr-1980-5373-MR-2017-0944.pdfNiTiShape Memory AlloysWire DrawingUniform WorkTransformation Work |
| spellingShingle | André da Silva Antunes Osmar de Sousa Santos Leonardo Kenji Fudo Naito Odair Dona Rigo Jorge Otubo The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA Materials Research NiTi Shape Memory Alloys Wire Drawing Uniform Work Transformation Work |
| title | The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA |
| title_full | The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA |
| title_fullStr | The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA |
| title_full_unstemmed | The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA |
| title_short | The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA |
| title_sort | wire drawing mechanics of near equiatomic niti sma |
| topic | NiTi Shape Memory Alloys Wire Drawing Uniform Work Transformation Work |
| url | http://www.scielo.br/pdf/mr/v21n3/1516-1439-mr-1980-5373-MR-2017-0944.pdf |
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