Mechanical and thermomechanical properties of a Ti50Ni25Cu25 melt spun ribbon
Mechanical and thermomechanical properties of a Ti50Ni25Cu25 melt spun ribbon
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DOI：
10.1016/s0921-5093(03)00018-2
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发表时间：
2003-08
期刊：
影响因子：
6.4
通讯作者：
Yong Liu
中科院分区：
文献类型：
--
作者：
Yong Liu
研究了Ti50Ni25Cu25合金快淬薄带的力学性能和热机械性能。在500°C下退火初始非晶带15分钟后，结晶带表现出明确的形状记忆效应和高达10%应变的超弹性形状恢复。没有平坦的应力平台与这种高超弹性相关。在循环变形过程中，随着应变的增加，形状恢复应变增加，而滞后减小。屈服应力也随着变形周期的增加而显著降低，导致具有非常低滞后的超弹性。
The mechanical and thermomechanical properties of a Ti50Ni25Cu25melt spun ribbon were studied. After annealing the initially amorphous ribbon at 500°C for 15 min, the crystallized ribbon exhibits a well-defined shape memory effect and a superelastic shape recovery of up to 10% strain. No flat stress-plateau is associated with this high superelasticity. During cyclic deformation with strain increment, the shape recovery strain increases while the hysteresis decreases. The yield stress also decreases significantly with increasing deformation cycles, leading to superelasticity with very low hysteresis.