Characterizing the Structure Evolution of Tertiary Scale during Simulated Coiling by EBSD

作     者：Sheng LIU Hui-bin WU Xiao LI Hai-tao JIANG Di TANG 

作者机构：National Engineering Research Center for Advanced Rolling TechnologyUniversity of Science and Technology Beijing 

出 版 物：《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research, International)

年 卷 期：2014年第21卷第2期

页      面：215-221页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Item Sponsored by National High-tech Research and Development Program(863 Program)of China(2012AA03A508) 

主　　题：electron backscattered diffractiom oxide scale mierostructure texture 

摘      要：An oxide scale formed at 900 ℃ for 60 s in dry air was subjected to the simulated coiling processed with different coiling temperatures. The phase transformation behavior, especially the orientation distribution of the oxide scale, was analyzed using electron backseattered diffraction （EBSD） technique. When cooling from the coiling tem- perature of 650 ℃, the scale consists of FeaO4 layer, FeO layer and FeaO4 seam. The FeaO4 precipitates are ob served in the FeO grains of the scale formed with the coiling temperature of 550 and 450 ℃. With the cofling temperature of 350 ℃, the decomposition of FeO is suppressed due to the low temperature. The Fe3O4 grains, which are decomposed from FeO, has the same orientation as the parent FeO grains. Moreover, the FeO grains, of which the growth direction is parallel to 〈001〉, is easier to decompose into Fe3O4 than the grains with other orientations.