热轧W80Cu20合金的织构演变分析

Texture Evolution Analysis of W80Cu20 Alloy after Hot-Rolling

采用XRD织构测试仪在角度为0°-90°时测量W80Cu20合金及经多道次热轧后的不完整极图,应用三维取向分布函数（ODF）研究W-Cu合金热轧板材中织构的演变规律。结果表明：热轧前,W80Cu20合金的取向密度值接近1,织构强度很弱,取向不明显,认为没有织构出现;W80Cu20合金轧制变形后,织构强度增加,表现出明显的轧制织构特征,择优取向明显,织构的取向密度值较大,形成稳定的织构组分：Brass型织构取向{110}、Copper型织构取向{211}和旋转立方织构取向{200}。

The uncompleted pole figures of W80Cu20 and W80Cu20 alloy sheets after multi-pass hot-rolling were measured by XRD texture instrument at angles from 0° to 90°. And their texture evolution law was analyzed by the orientation distribution functions （ODF）. The results indicate that W80Cu20 alloy before roiling has no texture, because its orientation density value is closely to 1 with poor and non-obvious texture. But hot-rolled W80Cu20 alloy sheets have obvious rolling texture and preferred orientation with greater orientation density. As well, the sheets have their stable texture components： Brass type texture { 110}〈112〉, Copper type texture {211 }〈111〉 and rotating cubic texture {200} 〈011 〉.