Zr-Sn-Nb合金冷轧过程的织构演变模拟研究  

Modeling of Texture Evolution during Cold Rolling of Zr-Sn-Nb Alloys

作　　者：陈建伟[1] 余泓冰[1] 栾佰峰[1] A.Chapuis 张喜燕[1] 刘庆[1] 周军[2] 

机构地区：[1]重庆大学,重庆400044 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2013年第11期2279-2283,共5页Rare Metal Materials and Engineering

基　　金：教育部新世纪人才项目(NCET-08-0606);国家自然科学基金(51171213);中央高校基本科研业务费(CDJXS10132201;CDJZR10130008)

摘　　要：利用Taylor松弛约束(Relaxed Constraints,Taylor-RC)模型模拟了2种不同初始取向的Zr-Sn-Nb合金板材在冷轧过程中的织构演变,并对比了模拟结果和X射线衍射(XRD)实测织构之间的差异。结果表明,选用合适的变形系统和临界分切应力比值,Taylor-RC模型可以有效模拟Zr-Sn-Nb合金冷轧中的织构演变。结合模拟所得的2种板材不同变形系统的相对开启量,解释了锆合金冷轧织构的形成原因。In order to study texture evolution and deformation mechanism during cold rolling of Zr-Sn-Nb alloys,the texture from experiments and simulations were presented and compared.Experimental texture was obtained by X-ray diffraction and simulated texture was calculated by the Taylor model with related constraints （Taylor-RC）.The choice of deformation systems and their relative critical resolved shear stress （CRSS） were discussed.The results show that using a combination of slip and twinning systems with appropriate ratio of critical resolved shear stress,the simulated textureis in good agreement with the experimental one.The texture evolution of the two sheets could be interpreted by the relative activities of different slip and twinning systems,which are calculated by the Taylor-RC model.

关 键 词：锆合金 Taylor模型 冷轧 织构模拟 初始取向 

分 类 号：TG335.12[金属学及工艺—金属压力加工]