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从唯象理论出发,推导了立方相向正方、斜方和以不同单斜结构描述的马氏体转变的一般公式。对一种典型热弹性材料-TiNi,提出若干种可能的马氏体相变模型,进行计算机模拟。结果,对于马氏体结构模型为α=0.2889,b=0.4120,c=0.4622nm,β=96.8°的TiNi[简称TiNi(β)]的相变孪生模型是K_1=(111)_M,(111)_M(第Ⅰ类孪晶)和η_1=[110]_M(第Ⅱ类孪晶);对于马氏体结构模型为α=0.2885,b=0.4622,c=0.4120nm,γ=96.8°的TiNi[简称TiNi(γ)]是K_1=(111)_M,和(111)_M(第Ⅰ类孪晶).它们满足“相界面是一个平均畸变为零的平面”的条件,并且与有关作者提供的实验数据吻合较好。
Based on the theory of phenomenology, the general formulas of cubic phase to square, oblique square and martensitic transformation described by different monoclinic structures are derived. For a typical thermoelastic material-TiNi, several possible martensitic transformation models are proposed for computer simulation. As a result, the phase transition twin model of TiNi [TiNi (β)] with martensite structure model α = 0.2889, b = 0.4120, c = 0.4622 nm and β = 96.8 ° is K_1 = (111) _M, ) _M (type Ⅰ twins) and η_1 = [110] _M (type Ⅱ twins). For the martensite structure model, TiNi with α = 0.2885, b = 0.4622, c = 0.4120nm and γ = 96.8 ° The abbreviations TiNi (γ) are K_1 = (111) _M and (111) _M (type I twins). They satisfy the condition that “the phase interface is a plane with an average distortion of zero” and are related to the author The experimental data is in good agreement.