EBSD Investigation on Oriented Nucleation in IF Steels  

作　　者：Shengquan CAO Youyuan LI Jinxu ZHANG Jiansheng WU 

机构地区：[1]Shanghai Baosteel Co. Ltd., Cold Rolling Mill, Shanghai 200941, China [2]Key Laboratory of the Ministry of Education for High Temperature Materials and Testing, Shanghai Jiao Tong University, Shanghai 200030, China

出　　处：《Journal of Materials Science & Technology》2007年第2期262-266,共5页材料科学技术（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China under grant No. 50171040.

摘　　要：The mechanism responsible for the formation of recrystallization texture in cold-rolled Ti bearing interstitial free （IF） steel sheets was investigated using electron back-scatter diffraction （EBSD）. In addition, the origin of nuclei with specific orientations was studied. The formation of recrystallization texture was explained by oriented nucleation. Most nuclei have a high misorientation angle of 25-55° with the surrounding deformed matrices, but no specific orientation of misorientation axis between the nucleus and the surrounding deformed matrix is observed. The stored energy of deformed grains is in the decreasing order of the {111}〈112〉,{111}〈110〉, {112}〈110〉 and {001}〈110〉 orientations. New {111}〈110〉 grains are nucleated within deformed {111}〈112〉 grains and new {111}〈112〉 grains originate in the deformed {111}〈110〉 grains.The mechanism responsible for the formation of recrystallization texture in cold-rolled Ti bearing interstitial free （IF） steel sheets was investigated using electron back-scatter diffraction （EBSD）. In addition, the origin of nuclei with specific orientations was studied. The formation of recrystallization texture was explained by oriented nucleation. Most nuclei have a high misorientation angle of 25-55° with the surrounding deformed matrices, but no specific orientation of misorientation axis between the nucleus and the surrounding deformed matrix is observed. The stored energy of deformed grains is in the decreasing order of the {111}〈112〉,{111}〈110〉, {112}〈110〉 and {001}〈110〉 orientations. New {111}〈110〉 grains are nucleated within deformed {111}〈112〉 grains and new {111}〈112〉 grains originate in the deformed {111}〈110〉 grains.

关 键 词：Oriented nucleation Stored energy Electron back-scatter diffraction IF steel 

分 类 号：TG142.1[一般工业技术—材料科学与工程]