Abstract: The effect of annealing temperature (Ta) on the shape memory effect, superelasticity, mechanical properties and fracture morphology of Ti-50.8Ni-0.1Zr alloy wire were investigated by tensile test, differential scanning calorimetry, optical microscope and scanning electron microscopy. The results are as follows. The alloy wires annealed at 350—400 ℃ and 600—700 ℃ present superelasticity (SE), the maximum value (483 MPa) of the platform stress and the minimum value (0.1%) of the residual strain are all obtained in the alloy wires annealed at 600 ℃, and the stability of SE in the alloy wires annealed at 350—400 ℃ is the best. The alloy wires annealed at 450—550 ℃ present shape memory effect (SME), the minimum value (190 MPa) of the platform stress is obtained in the alloy wire annealed at 500 ℃, and the maximum value (4.9%) of the residual strain is obtained in the alloy wire annealed at 450 ℃, and the stability of SME in the alloy wire annealed at 450 ℃ is the best. The plasticity of the alloy wires annealed at 600—700 ℃ is superior to the alloy wires annealed at 350—550 ℃, but the strength is less than that of the latter. The maximum value (1 489 MPa) of the tensile strength is obtained in the alloy wire annealed at 400 ℃, and the maximum value (35.1%) of the percentage elongation is obtained in the alloy wire annealed at 650 ℃. The fracture morphology of the alloy wire presents dimple, and su-bordinates to ductile fracture of the microporous aggregation. Ta has little effect on fracture morphology.
1 Sun L, Huang W M, Ding Z,et al. Materials and Design, 2012, 33, 555. 2 Olander A.Zeitschrift für Kristallographie-Crystalline Materials, 1932, 83, 145. 3 Jani J M, Leary M, Subic A, et al. Materials and Design, 2014, 56, 1078. 4 Saghaian S M, Karaca H E, Tobe H, et al. Acta Materialia, 2017, 134, 211. 5 Shariat B S, Meng Q L, Mahmud A S, et al. Materials and Design, 2017, 124, 225. 6 Firstov G S, Humbeeck J V, Koval Y N. Materials Science and Enginee-ring A, 2003, 378, 2. 7 Otsuka K, Ren X. Materials Science and Engineering A, 1999, 273, 89. 8 He Z R, Wu P Z, Liu K K, et al. Materials Reports A:Review Papers, 2017, 31(10), 17 (in Chinese). 贺志荣, 吴佩泽, 刘康凯, 等.材料导报:综述篇, 2017, 31(10), 17. 9 He Z R, Liu K K, Wang F, et al. The Chinese Journal of Nonferrous Metals, 2019, 29(4), 742 (in Chinese). 贺志荣, 刘康凯, 王芳, 等.中国有色金属学报, 2019, 29(4), 742. 10 He Z R, Wang Q, Wang F, et al. Rare Metal Materials and Engineering, 2011, 40(11), 1998 (in Chinese). 贺志荣, 王启, 王芳, 等.稀有金属材料与工程, 2011, 40(11), 1998. 11 He Z R, Liu M Q. Materials Science and Engineering B, 2012, 177 (12), 986. 12 He Z R. Acta Metallurgica Sinica, 2008, 44(9), 1076 (in Chinese). 贺志荣.金属学报, 2008, 44(9), 1076. 13 Du Y Q, He Z R, Wang F, et al. Transactions of Materials and Heat Treatment, 2018, 39 (9), 30 (in Chinese). 杜雨青, 贺志荣, 王芳, 等.材料热处理学报, 2018, 39(9), 30. 14 Bozzolo G, Noebe R D, Mosca H O. Journal of Alloys and Compounds, 2005, 389(1), 80. 15 He Z R, Wang F, Wang Y S, et al. Acta Metallurgica Sinica, 2007, 43(12), 1293 (in Chinese). 贺志荣, 王芳, 王永善, 等. 金属学报, 2007, 43(12), 1293. 16 Inoue S, Sauada N, Namazu T. Vacuum, 2009, 83(3), 664. 17 Kim H Y, Mizutani M, Miyazaki S. Acta Materialia, 2009, 57(6),1920. 18 Teragama A, Nagai K, Kyogoka H. Materails Transactions, 2009, 50(10), 2446. 19 Eckelmeyer K H. Scripta Metallurgica, 1976, 10, 667. 20 Feng Z W, Qan D F, Gao B D, et al. Chinese Journal of Rare Metals, 2001, 25(1), 47 (in Chinese). 冯昭伟, 千东范, 高宝东,等. 稀有金属, 2001, 25(1), 47. 21 He Z R, Wang F. Metal Science and Heat Treatment, 2014, 56(5-6), 320. 22 Atli K C. Journal of Alloys and Compounds, 2016, 679, 260. 23 Liu Y,He Z R, Wang F, et al. Rare Metal Materials and Engineering, 2011, 40(8), 1412 (in Chinese). 刘艳, 贺志荣, 王芳, 等.稀有金属材料与工程, 2011, 40(8), 1412. 24 Feng H, He Z R, Wang F, et al. Heat Treatment of Metals, 2019, 44(3), 120 (in Chinese). 冯辉, 贺志荣, 王芳, 等. 金属热处理, 2019, 44(3), 120. 25 Wu B, Sun K X, Li H, et al. Journal of Vibration Engineering, 2000, 13(3), 129 (in Chinese). 吴波, 孙科学, 李惠, 等.振动工程学报, 2000, 13(3), 129. 26 Wang Q, He Z R, Wang Y S, et al. Acta Metallurgica Sinica, 2010, 46(7), 800 (in Chinese). 王启,贺志荣,王永善,等.金属学报, 2010, 46(7), 800. 27 Liu W, Zhao X Q. Chinese Journal of Aeronautics, 2009, 22(5), 540. 28 Jiang F, Liu Y, Yang H, et al. Acta Materialia, 2009, 57(16), 4773. 29 Semba H, Okabe N, Yamaji T, et al. Materials Transactions, 2006, 47(3), 772. 30 Wang R. Physical Testing and Chemical Analysis part A: Physical Testing, 2016, 52(10), 698 (in Chinese). 王荣.理化检验(物理分册), 2016, 52(10), 698.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2021, Vol. 35 
