Atomic scale investigation of FCC→HCP reverse phase transformation in face-centered cubic zirconium

作     者：Wenbin Guo Fuzhou Han Geping Li Yingdong Zhang Muhammad Ali Jie Ren Qichen Wang Fusen Yuan Wenbin Guo;Fuzhou Han;Geping Li;Yingdong Zhang;Muhammad Ali;Jie Ren;Qichen Wang;Fusen Yuan

作者机构：School of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Shi-changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China 

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

年 卷 期：2023年第137卷第6期

页      面：8-13页

核心收录：

学科分类：08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0701[理学-数学] 

基　　金：The authors appreciate Dr.Jinmin Liu and Dr.Xiaolan Wang for TEM measurements. 

主　　题：Zircaloy-4 Reverse phase transformation Fcc-Zr phase Interaction 

摘      要：Mechanism of FCC→HCP reverse phase transformation in face-centered cubic zirconium(FCC-Zr)along with a concomitant 70.5°rotation ofα-Zr matrix were investigated in zircaloy-4(Zr-4)cladding tube by using transmission electron microscopy(TEM).Results showed that the interaction among a secondary phase particle(SPP)and three FCC-Zr grains resulted in the formation of cross stacking faults in SPP and exerted a drag force on minor axis of the adjacent FCC-Zr phase.Moreover,when the shear stress along[112]_(FCC-Zr)direction was large enough to initiate the emission of 1/6[112]Shockley partial dislocation on every other(111)_(FCC-Zr)close-packed plane,the stacking sequence would change from ABC ABCA to AB ABABA viz.(0001)planes of the daughter HCP phase.Thus,FCC→HCP reverse phase transformation in FCC-Zr was presented.