BM理论优化计算在Ti-49.8Ni合金Ⅱ型孪晶马氏体相变中的应用  

Application of optimal calculation of BM theory in Ti-49.8Ni alloy type Ⅱtwin martensite transformation

作　　者：孙颖 苏慧 许长庆[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《河北工业大学学报》2017年第6期60-64,共5页Journal of Hebei University of Technology

基　　金：国家自然科学基金(59771040)

摘　　要：针对原始马氏体相变晶体学唯象理论中Bowles-Mackenzie理论存在的计算过程复杂的不足,提出了利用矢量的旋转操作来对其进行简化的改进方法,该方法使计算过程更简洁直接.利用该方法对Ti-49.8Ni合金<011>Ⅱ型孪晶中从B2到单斜B19'的马氏体相变的惯习面、切变方向、宏观形变量进行了计算,计算出的马氏体惯习面与Matsumoto所得实验值非常接近,偏差仅为3.2°.Aiming at the complexity of the computational process of Bowles-Mackenzie theory in the theory of primitive martensitic transformation, the paper proposes an improved method to simplify the calculation process by vector rotation.The method makes the calculation process more concise and straightforward. By using this method, the habit plane, shear direction and macroscopic deformation of martensitic transformation in Ti-49.8 Ni alloy 011 type II twin from B2 to monoclinic B19 ＇are calculated. The martensitic habit plane is very close to the experimental value of Matsumoto, with a deviation of only 3.2°.

关 键 词：Ti-49.8Ni合金 马氏体相变 BM理论 Ⅱ型孪晶 惯习面 

分 类 号：TG111.5[金属学及工艺—物理冶金]