可逆形状记忆效应是指马氏体状态变形合金试样，不论是在加热时可逆相变过程中还是在以后冷却时由于直接相变的结果而发生改变自身形状（尺寸）的能力．在发生无扩散反铁磁性肝马氏体”）转变的富标的Mn－Cu系合金中，由于其结晶结构由面心立方到面心正方转变的结果，从而带来? Reversible shape memory effect refers to the ability of a martensitic state-deformed alloy specimen to change its shape (size) as a result of direct phase transformation during reversible phase transformation on heating or after cooling. In the case of rich Mn-Cu based alloys transformed with non-diffusive antiferromagnetic liver martensite, the crystal structure is transformed from face-centered cubic to face-centered square due to its crystal structure.