冷变形N18合金再结晶过程中的织构演变  

Texture evolution of cold-rolled N18 alloy during recrystallization

作　　者：吴婧[1] 陈静 蒋亦岚[2] 戴训 张瑞谦[1] 刘会群[2] Wu Jing;Chen Jing;Jiang Yilan;Dai Xun;Zhang Ruiqian;Liu Huiqun(Nuclear Power Institute of China,Chengdu Sichuan 610213,China;School of Materials Science and Engineering,Central South University,Changsha Hunan 410083,China;School of Materials Science and Engineering,Anhui Polytechnic University,Wuhu Anhui 241000,China)

机构地区：[1]中国核动力研究设计院,四川成都610213 [2]中南大学材料科学与工程学院,湖南长沙410083 [3]安徽工程大学材料科学与工程学院,安徽芜湖241000

出　　处：《金属热处理》2021年第5期38-46,共9页Heat Treatment of Metals

基　　金：国家自然科学基金联合基金(U1867201)。

摘　　要：采用电子背散射衍射技术(EBSD),对30%冷轧变形量的N18锆合金在530℃再结晶退火过程中轧面(RD-TD)和切面(RDND)的显微组织和织构进行了表征和分析。对于轧面,初始晶粒取向是<0001>∥ND,再结晶晶粒取向主要是<0001>∥ND和<1210>∥RD;对于切面,初始晶粒取向主要是<1010>∥RD和<1210>∥RD,再结晶退火后形成<1010>∥ND和<1210>∥ND,以及<0001>方向分布在TD极点±85°三种不同取向的晶粒;轧面上的晶粒尺寸大于切面上的晶粒尺寸,为锆合金的再加工提供了理论支撑。Microstructure and texture of the rolled plane(RD-TD)and cut plane(RD-ND)of 30% cold-rolled N18 alloy annealed at 530℃ for different time were characterized and analyzed by means of EBSD.For RD-TD plane,the initial grain orientation is<0001>//ND,the orientations of recrystallized grains are <0001>//ND and <1210>//RD texture.For the RD-ND plane,the initial grain orientation is mainly <1010>//RD and<1210>//RD.After recrystallization annealing,three different orientations of<1010>//ND,<1210>//ND and <0001> tilted to TD pole±85°are formed.The grain size on the RD-TD plane is larger than that on the RD-ND plane,which provides theoretical support for the reprocessing of Zr alloy.

关 键 词：N18合金 再结晶 织构演变 

分 类 号：TG166.7[金属学及工艺—热处理]