Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy
ABSTRACTThe temperature dependence of the critical stress of R→B19’ transformation in NiTi shape memory alloys remains unclear due to the difficulties in precisely identifying the phase constitution and acquiring sole R phase. Here we investigate the thermally- and stress-induced martensitic transfo...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-04-01
|
| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2022.2141587 |
| _version_ | 1811302545398693888 |
|---|---|
| author | Taotao Wang Xiangxiang Rao Qiang Zhang Daqiang Jiang Yang Ren Lishan Cui Kaiyuan Yu |
| author_facet | Taotao Wang Xiangxiang Rao Qiang Zhang Daqiang Jiang Yang Ren Lishan Cui Kaiyuan Yu |
| author_sort | Taotao Wang |
| collection | DOAJ |
| description | ABSTRACTThe temperature dependence of the critical stress of R→B19’ transformation in NiTi shape memory alloys remains unclear due to the difficulties in precisely identifying the phase constitution and acquiring sole R phase. Here we investigate the thermally- and stress-induced martensitic transformation in a near-equiatomic nanocrystalline NiTi alloy. In situ synchrotron X-ray diffraction is used to identify the phase evolution such that the temperature window for sole R phase is firmly determined. We find that the temperature dependence of R→B19’ is negative (−0.2 MPa/K) in our alloy, in sharp contrast to 3–5 MPa/K reported. Possible reasons for the discrepancies are discussed. |
| first_indexed | 2024-04-13T07:29:56Z |
| format | Article |
| id | doaj.art-241bf97491fd4aa98ae4c03c8d0f6dc9 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-04-13T07:29:56Z |
| publishDate | 2023-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-241bf97491fd4aa98ae4c03c8d0f6dc92022-12-22T02:56:22ZengTaylor & Francis GroupMaterials Research Letters2166-38312023-04-0111425025810.1080/21663831.2022.2141587Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloyTaotao Wang0Xiangxiang Rao1Qiang Zhang2Daqiang Jiang3Yang Ren4Lishan Cui5Kaiyuan Yu6Department of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing, People’s Republic of ChinaDepartment of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing, People’s Republic of ChinaDepartment of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing, People’s Republic of ChinaDepartment of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing, People’s Republic of ChinaDepartment of Physics, City University of Hong Kong, Kowloon, Hong Kong, People’s Republic of ChinaDepartment of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing, People’s Republic of ChinaDepartment of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing, People’s Republic of ChinaABSTRACTThe temperature dependence of the critical stress of R→B19’ transformation in NiTi shape memory alloys remains unclear due to the difficulties in precisely identifying the phase constitution and acquiring sole R phase. Here we investigate the thermally- and stress-induced martensitic transformation in a near-equiatomic nanocrystalline NiTi alloy. In situ synchrotron X-ray diffraction is used to identify the phase evolution such that the temperature window for sole R phase is firmly determined. We find that the temperature dependence of R→B19’ is negative (−0.2 MPa/K) in our alloy, in sharp contrast to 3–5 MPa/K reported. Possible reasons for the discrepancies are discussed.https://www.tandfonline.com/doi/10.1080/21663831.2022.2141587R phaseNiTitemperature dependencemartensitic transformationsynchrotron XRD |
| spellingShingle | Taotao Wang Xiangxiang Rao Qiang Zhang Daqiang Jiang Yang Ren Lishan Cui Kaiyuan Yu Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy Materials Research Letters R phase NiTi temperature dependence martensitic transformation synchrotron XRD |
| title | Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy |
| title_full | Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy |
| title_fullStr | Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy |
| title_full_unstemmed | Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy |
| title_short | Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy |
| title_sort | negative temperature dependence of stress induced r b19 transformation in nanocrystalline niti alloy |
| topic | R phase NiTi temperature dependence martensitic transformation synchrotron XRD |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2022.2141587 |
| work_keys_str_mv | AT taotaowang negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy AT xiangxiangrao negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy AT qiangzhang negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy AT daqiangjiang negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy AT yangren negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy AT lishancui negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy AT kaiyuanyu negativetemperaturedependenceofstressinducedrb19transformationinnanocrystallinenitialloy |