综述了等径弯曲通道变形制备FCC、BCC、HCP金属材料中织构的研究进展.介绍了ECAP变形织构的主要研究方法——蚀坑法、X射线衍射法、中子多晶体衍射法和电子背散射衍射法,论述了挤压路径、挤压道次、挤压温度、模具夹角、形变孪晶、初始织构等对ECAP变形过程织构演变及形成机理的影响,并对基于物理过程的织构演化模型(全约束Taylor多晶体模型和粘塑性自洽多晶体模型)进行评价,同时进一步指出织构演化研究的重要性及发展趋势.%Texture development in metals of FCC, BCC and HCP crystal structure processed by equal channel angular pressing (ECAP) is described. The aim of the present paper is to introduce the methods for texture determination such as etch-figure, X-ray diffraction, neutron diffraction and electron backscatter diffraction. A multitude of factors that can influence texture evolution mechanism is covered, such as deformation routes, passes number, temperature, die geometry, deformation twinning, initial texture and so on. Current models (full constrains Taylor polycrys-tal model and visco-plastic self-consistent polycrystal model) for texture evolution based on the physics are evaluated. The importance of texture development in ECAP and development prospects are suggested.
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