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Transformation behaviour with thermal cycling in NiTi alloys

机译:NiTi合金中热循环的相变行为

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摘要

The transformation behaviour of NiTi alloys were investigated by differential scanning calorimetry in order to reveal the effects of thermal cycles with the repetition of the transformation. The thermal cycles tend to lower the transformation temperature between the high and low temperature phases and to stabilize the intermediate phase during cooling to result in a two-stage transformation, while the reverse transformation during heating remains a one-stage transformation. Because these effects of the thermal cycles depend on the composition and the deformation, it is thought that defects play an intrinsic role in the complicated behaviour of NiTi alloys.
机译:通过差示扫描量热法研究了NiTi合金的相变行为,以揭示重复循环过程中热循环的影响。热循环趋向于降低高温相和低温相之间的转变温度,并且在冷却期间使中间相稳定,从而导致两阶段的转变,而在加热期间的反向转变保持为一阶段的转变。由于热循环的这些影响取决于成分和变形,因此认为缺陷在NiTi合金的复杂行为中起着固有的作用。

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