以β'-CuZn 相为例分析了轧制应力作用下B2结构金属发生机械孪生的基本过程，并从力学和晶体结构的稳定性两个方面论证了B2结构金属的逆向机械孪生行为。结果表明，逆向孪生能保持B2结构不变，且在多晶轧制变形条件下的应变阻力最小。

出了一种考虑反应应力的体心立方金属塑性变形模型，计算了位错开动所造成的切应变及可能会引发的反应应力，并使之影响到后续的位错开动过程。在{110}和{112}两类滑移面上的临界切应力比为0.95，第2位错与第1位错取向因子差小于5%，第2位错也同时开动的条件下计算了体心立方金属冷轧80%时的变形织构。结果表明，所计算的织构比以往其他计算模型更接近冷轧80%无间隙原子钢板的实际织构。分析认为，该模型可以兼顾多晶体塑性变形时应变与应力的连续性，因而更接近于体心立方金属变形的真实晶体学过程。

Misorientation between neighboring grains has significant influence on migration of grain boundaries during annealing of cold worked polycrystalline materials (1,2). The migration of grain boundaries could lead to formation of unique textures and improvement of materials properties (3). Therefore,characterization of the misorientation distributions is crucial for understanding underlying mechanisms.Based on group theory and the assumption of random orientation distribution, MacKenzie (4,5)calculated the distribution of misorientation angles and rotation axes in polycrystalline materials withcubic symmetry. A Similar study was reported by Morawiec (6) for materials with other crystalsymmetries. Recently, the EBSD (Electron Back Scattering Diffraction) technique was successfullyutilized to determine misorientation distributions between grains in either randomly or preferentiallyoriented polycrystalline materials (1-3). However, theoretical characterization of the misorientationdistribution in materials with strong texture remains a challenge. The study of textured materials wouldhave practical impact in industry, especially in the case of grain boundary migration during recrystallizationof heavily deformed matrix. In the present work, a new method is presented for calculating themisorientation distribution in textured polycrystalline materials.

A deformation model with the consideration on reaction stress between grains in polycrystalline aggregates is proposed, in order to solvethe problems of strain and stress incompatibility appearing in previous Sachs- and Taylor-type models. The corresponding simulation fortensile deformation indicates that the model predicts orientation evolutions similar to that made by Taylor assumption, while the attention toboth of the stress and strain compatibility has been given without cryptic fitting parameters. A 'hard' area, where no track of tensile directioncould run through, was predicted near <1 1 1> according to the simulation, which agrees with some experimental observations.