Martensitic Transformation and Its Thermal Cycling Stability in Ni56Mn21Cu4Ga19High-Temperature Shape Memory Ribbon
来源期刊：Acta Metallurgica Sinica2015年第2期
论文作者：Xi-Li Lu De-Xi Su Feng Chen Wei-Li Liu Yang-Guang Shi Yun-Xiang Tong Li Li
文章页码：243 - 248
摘 要：The microstructure, martensitic transformation, and thermal cycling stability of Ni56Mn21Cu4Ga19high-temperature shape memory ribbons subjected to different annealing conditions were investigated and compared with that of the bulk master alloy. It was shown that c phases precipitated in the bulk and the ribbons annealed for 5 h at 800 and 900 °C,which lead to the same poor thermal cycling stability. However, the formation of c phase was inhibited in the ribbons annealed at 700 °C for 30 min and 5 h, which remarkably improved the thermal cycling stability and also shifted the martensitic transformation to a lower temperature with a drop of about 60 °C than other three samples.
Xi-Li Lu1，De-Xi Su1，Feng Chen1，Wei-Li Liu1，Yang-Guang Shi2，Yun-Xiang Tong1，Li Li1
1. Center for Biomedical Materials and Engineering, Key Laboratory of Superlight Material and Surface Technology,Ministry of Education, Harbin Engineering University2. Department of Applied Physics, Nanjing University of Aeronautics and Astronautics
摘 要：The microstructure, martensitic transformation, and thermal cycling stability of Ni56Mn21Cu4Ga19high-temperature shape memory ribbons subjected to different annealing conditions were investigated and compared with that of the bulk master alloy. It was shown that c phases precipitated in the bulk and the ribbons annealed for 5 h at 800 and 900 °C,which lead to the same poor thermal cycling stability. However, the formation of c phase was inhibited in the ribbons annealed at 700 °C for 30 min and 5 h, which remarkably improved the thermal cycling stability and also shifted the martensitic transformation to a lower temperature with a drop of about 60 °C than other three samples.
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