冷轧TA18管材变形过程中微观组织及织构  

Investigation of the microstructure and texture of TA18 tubes during cold-rolling process

作　　者：陈逸[1] 李金山[1] 孙峰[1] 唐斌[1] 张旺峰[2] 李艳[2] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072 [2]中航工业北京航空材料研究院,北京100095

出　　处：《塑性工程学报》2012年第1期35-39,共5页Journal of Plasticity Engineering

摘　　要：采用SEM、TEM、XRD及EBSD技术,研究TA18合金管材冷轧过程中微观组织及织构的演变。结果表明,TA18合金管材冷轧组织为典型的纤维状组织,滑移变形为主要的变形机制。其中,轧制初始阶段,TA18变形主要以{10-10}棱柱滑移为主;随着变形量的增大,{0001}基面滑移代替棱柱滑移,成为管材中主要变形方式,同时棱锥滑移逐渐开动;当变形量进一步增大时,棱锥滑移代替基面滑移,成为管材中主要的变形方式,织构主要以{10-12}、{10-13}、{10-14}、{11-23}、{11-24}棱锥织构为主。The microstructure and texture of TA18 tubes during cold-rolling process was investigated using SEM,TEM,XRD and EBSD technology.The results show that the cold rolled structure of TA18 tube is the typical fiber structure and the sliding deformation mode is the major deformation mode.At the initial stage of cold-rolling,the {10-10} prismatic slip system is the dominant deformation mode.With the increase of cold-roll deformation,the {0001} basal slip system becomes the major deformation mode,and the pyramidal slip system gradually starts.At the final stage of cold-rolling,the pyramidal slip system,with slips on {10-12},{10-13},{10-14},{11-23} and {11-24} planes becomes dominant.

关 键 词：TA18 管材 冷轧 微观组织 三向织构 

分 类 号：TG335.7[金属学及工艺—金属压力加工]