| Title | Effect of Aging Treatment on Superelasticity of a Ti48.8Ni50.8V0.4 Alloy |
| Authors | Zhao, H. Liang, C. Q. Liu, J. T. Tong, Y. X. Chen, F. Tian, B. Li, L. Zheng, Y. F. |
| Affiliation | Harbin Engn Univ, Ctr Biomed Mat & Engn, Harbin 150001, Peoples R China. Heilongjiang Prov Hosp, Harbin 150001, Peoples R China. Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China. Harbin Engn Univ, Ctr Biomed Mat & Engn, Harbin 150001, Peoples R China. Heilongjiang Prov Hosp, Harbin 150001, Peoples R China. Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China. |
| Keywords | mechanical property microstructure shape memory alloy superelasticity TiNiV SHAPE-MEMORY ALLOYS TI-50.9 AT.PERCENT NI TRANSFORMATION BEHAVIOR MARTENSITIC-TRANSFORMATION DEFORMATION-BEHAVIOR |
| Issue Date | 2012 |
| Citation | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE.2012/12/1,21(2566-2571). |
| Abstract | In this study, effect of aging treatment on microstructure, deformation behavior, and superelasticity of Ti48.8Ni50.8V0.4 alloy was investigated. After aging at 400 A degrees C for 30 min, Ti3Ni4 precipitates formed. With increasing aging temperature from 300 to 450 A degrees C, the yield strength of reoriented martensite increased due to the strengthening effect of Ti3Ni4 phase, thus improved the shape recovery ratio and reduced the stress hysteresis. Further increasing the aging temperature, the size of Ti3Ni4 precipitates increased and the coherency between precipitate and matrix gradually lost, leading to the decreasing yield strength of reoriented martensite and shape recovery ratio. Simultaneously, the stress hysteresis increased resulting from the hinder of plastic deformation to the interfacial movement during phase transformation. The critical stress to induce martensitic transformation continuously decreased with increasing aging temperature. |
| URI | http://hdl.handle.net/20.500.11897/229022 |
| ISSN | 1059-9495 |
| DOI | 10.1007/s11665-012-0373-2 |
| Indexed | SCI(E) EI CPCI-S(ISTP) |
| Appears in Collections: | 工学院 |
