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第六讲热弹性马氏体、材料的伪弹性和形状记忆效应在这一讲中,我们要讨论三个与马氏体相变有关的问题,这就是热弹性马氏体、伪弹性和形状记忆效应。我们已经看到,大多数马氏体相变中,由于相变而产生的形状变化的协调是范性的,这种范性协调或范性形变会引起自催化形核。范性形变产生的新位错还会干扰马氏体界面的规则结构,当马氏体界面向前推进与位错相遇时就会解体,从而使马氏体界面停止前进。这一停止是不可逆的,当温
Lecture 6 Thermoelastic Martensitic Materials, Pseudo-Elasticity and Shape Memory Effects In this lecture we will discuss three issues related to martensitic transformation, which are thermoelastic martensite, pseudoelasticity and shape Memory effect. We have seen that in most martensitic transformations, the coordination of the shape changes due to the phase transitions is paradoxical, and this paradigm shift or paradoxical deformation causes autocatalytic nucleation. The new dislocation produced by the normal deformation will also disturb the regular structure of the martensite interface. When the martensite interface moves forward and dislocations meet, it will disintegrate and the martensite interface will stop moving forward. This stop is irreversible, when the temperature