论文信息 - Microstructures and shape memory characteristics of rapidly solidified Ti50Ni30Cu20 alloy ribbons

Microstructures and shape memory characteristics of rapidly solidified Ti50Ni30Cu20 alloy ribbons

Abstract Transformation behaviors and shape memory characteristics of Ti50Ni30Cu20 (at.%) alloy ribbons prepared by melt spinning were investigated by means of differential scanning calorimetry, X-ray diffraction, and optical microscopy. The alloy was solidified as amorphous ribbon by a melt spinning process. After annealed at 440 °C for 10 min, the crystallized ribbon was deformed up to about 6.8% in ductile manner. A temperature hysteresis associated with the B2–B19 transformation was observed to be 4 K. These properties are mainly attributed to the controlled microstructures of the alloy ribbon.

Tae-Hyun Nam | Yeon-Wook Kim | Young-Mok Yun

[1] Akihisa Inoue,et al. Stabilization and high strain-rate superplasticity of metallic supercooled liquid , 1999 .

[2] T. Nam,et al. Cu-Content Dependence of Shape Memory Characteristics in Ti–Ni–Cu Alloys , 1990 .

[3] Yong Liu. Mechanical and thermomechanical properties of a Ti50Ni25Cu25 melt spun ribbon , 2003 .

[4] Shuichi Miyazaki,et al. Transformation pseudoelasticity and deformation behavior in a Ti-50.6at%Ni alloy , 1981 .

[5] J. Dutkiewicz,et al. Microstructure and martensite transformation in aged Ti-25Ni-25Cu shape memory melt spun ribbons , 2002 .

[6] H. Rösner,et al. A study of an amorphous-crystalline structured Ti–25Ni–25Cu (at.%) shape memory alloy , 1999 .

[7] Tae-Hyun Nam,et al. Shape Memory Characteristics Associated with the B2\ightleftarrowsB19 and B19\ightleftarrowsB19′ Transformations in a Ti-40Ni-10Cu (at.%) Alloy , 1990 .

[8] Yong Liu,et al. Effect of annealing on the transformation behavior and superelasticity of NiTi shape memory alloy , 2001 .

[9] W. Crone,et al. Bulk Shape Memory NiTi with Refined Grain Size Synthesized by Mechanical Alloying , 2002 .