多晶TiNi和CuZnAl形状记忆合金中的织构转变

用X射线织构仪测定了TiNi和CuZnAl合金的母相奥氏体、产品相马氏体的极图，计算了测定极图各自的位向分布函数。分析结果表明，TiNi合金奥氏体具有一个弱的织构组元{4，0，3}〈0，1，0〉和一个α纤维织构，TiNiCu合金马氏体有6个主要的织构组元；CuZnAl合金奥氏体织构是一个纤维织构，其纤维轴为〈1，1，0〉平行于轧向，位向密度沿纤维轴从{001}〈1-10〉到{111}〈1-10〉扩展，在位向{001}〈1-10〉附近，获得最大位向密度为26.9。CuZnAl合金马氏体有10个主要的织构组元。从奥氏体与马氏体的织构分析发现，两者织构是相互关联的，一个奥氏体的织构组元对应多个马氏体的织构组元，此结果符合马氏体形成自适应形貌的要求。

Texture Transformation inPolycrystalline TiNi and CuZnAl Shape Memory Alloys

The austenitic and martensitic pole figures for TiNi and CuZnAl shape memory alloys were measured by X-ray texture goniometer, subsequently, the respective orientation distribution functions (ODF) were calculated. The ODF analysis showed that TiNi austenite has a weak {403}〈010〉 component and an a fiber texture; TiNi martensite has 6 main texture components; CuZnAl austenite is a sharp 〈110〉 fiber texture; CuZnAl martensite has 10 main texture components. The austenitic and martensitic textures are well connected to each other by following the lattice correspondence relationships between the austenite and martensite and the principles of martensite variant selection.