异步轧制铸轧板组织织构演变研究

Study on Evolution of Microstructure and Texture of Cast Rolling Plate during Asymmetric Rolling

采用了XRD织构衍射法对异步轧制后的1235铸轧铝合金板材织构进行了检测,研究了异步轧制中的异速比对1235铝合金铸轧板材厚度织构均匀性的影响。结果表明:铸轧坯料织构在厚度很不均匀,其表层以旋转立方织构为主,中心层以Cu、S和Bs织构的β取向线为主;异步轧制能有效降低1235铝合金铸轧板材厚度织构的不均匀性,即:表层和中心层都以β取向线织构为主,其中异速比为1.2时的效果最好。

The texture of 1235 aluminum alloy cast rolling sheet after asymmetrical rolling was measured by XRD texture diffraction method. The influence of the different speeds ratio on the thickness texture uniformity of the 1235 aluminum alloy cast rolling sheet was studied. The results show that： the texture of cast rolling billet in thickness is very uneven, the surface of the cast rolling sheet is mainly rotating cube texture, and the central layer is mainly 13 oriented line of Cu, S and Bs texture; asynchronous rolling can effectively reduce the nonuniformity of the thickness texture of 1235 aluminum alloy east rolling sheet, that is, the surface and central layers are mainly 13 oriented line texture, between them, the effect is the best when the different speeds ratio is 1.2.