Characterization of a rapidly annealed Ti50Ni25Cu25 melt-spun ribbon

被引：0
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作者：
Tong, Yunxiang [1 ]
Liu, Yong [1 ]
Xie, Zeliang [2 ]
机构：
[1] School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
[2] School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
来源：
Journal of Alloys and Compounds | 2008年 / 456卷 / 1-2期
关键词：
In the present paper; crystallization behavior; martensitic transformation and deformation behavior of a Ti50Ni25Cu25 ribbon annealed at 400 °C under rapid heating were studied. The initially amorphous ribbon was fully crystallized under rapid thermal annealing at 400 °C for 30 s. However; under conventional thermal annealing; crystallization temperature was above 450 °C. The crystallization at low temperature under rapid heating was attributed to the release of the extra energy due to the annihilation of free-volume in amorphous state. With increasing the annealing time; martensitic transformation temperatures increased. The ribbon annealed at 400 °C for 300 s has developed good shape recovery properties. A 2.7% one-way memory strain was obtained the tensile strain of 5.5%. The deformation behavior showed non-flat stress-plateau and high spring-back; which is discussed in terms of grain size and orientation distribution of martensite variants. © 2007 Elsevier B.V. All rights reserved;
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页码：170 / 177
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