The elastic modulus of TiNi alloy was tailored by electroplastic rolling deformation and the effects of rolling strain and electropulse duration on the elastic modulus of electroplastic rolled TiNi alloy were systematically investigated. With rolling strain increasing from 0 to 1.70, the elastic modulus decreases from 61 to 30 GPa, which can be attributed to the increase in dislocation density and deformation-induced low modulus B19′ martensite phase. With electropulse duration increasing from 80 to 120 µs, the elastic modulus first decreases due to the volume fraction increase in low modulus B19′ martensite phase and then slightly increases on account of the dynamic recovery of dislocation and reverse martensite transformation resulted from electroplastic effect induced by high-energy electropulse.

中文翻译：

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应变和电脉冲持续时间对TiNi合金弹性模量的影响

通过电塑性轧制变形调整TiNi合金的弹性模量，系统研究了轧制应变和电脉冲持续时间对电塑性轧制TiNi合金弹性模量的影响。随着轧制应变从 0 增加到 1.70，弹性模量从 61 GPa 降低到 30 GPa，这可归因于位错密度和变形诱导的低模量 B19'马氏体相的增加。随着电脉冲持续时间从 80 µs 增加到 120 µs，弹性模量首先由于低模量 B19'马氏体相中体积分数的增加而降低，然后由于位错的动态恢复和由电塑性效应引起的反向马氏体转变而略有增加。高能电脉冲。