Effect of Si Content on Dynamic Recrystallization of Al-Si-Mg Alloys During Hot Extrusion

作     者：Yuna Wu Hengcheng Liao Jian Yang Kexin Zhou 

作者机构：Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and Engineering Southeast University 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2014年第30卷第12期

页      面：1271-1277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：financially supported by the Jiangsu Graduated-student Innovation Program of China (CXZZ-0146) the Scientific Research Foundation of Graduate School of Southeast University (YBJJ1235) 

主　　题：Al-Si-Mg alloys Electron backscatter diffraction(EBSD) Transmission electron microscopy(TEM) Dynamic recrystallization Hot extrusion 

摘      要：By using electron backscatter diffraction（EBSD） and transmission electron microscopy（TEM）, the effect of Si content on microstructure characteristics of three as-extruded Ale SieM g alloys was investigated. Results showed that the density of coarse Si particles played a critical role in dynamic recrystallization. Dynamic recrystallization rarely occurred in S1 alloy with less Si content; however, it happened in the Si-rich zones in S2 alloy with a medium Si content. And a mature recrystallization was observed in S3 alloy with high Si content. Although deformation was carried out at high temperature, particle-stimulated dynamic recrystallization occurred in Si-rich zones.