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EBSD在Nimonic 80A动态再结晶机制研究中的应用
引用本文:吴洁琼,陈科,陈杏芳,田胜,沈治,张澜庭,单爱党. EBSD在Nimonic 80A动态再结晶机制研究中的应用[J]. 电子显微学报, 2011, 30(4): 356-359
作者姓名:吴洁琼  陈科  陈杏芳  田胜  沈治  张澜庭  单爱党
作者单位:1. 上海交通大学,材料科学与工程学院,上海200240
2. 上海电气电站设备有限公司上海汽轮机厂,上海,200240
基金项目:上海市科技攻关重大项目(No.09521101402)
摘    要:本文采用背散射电子衍射(EBSD)技术对镍基高温合金Nimonic 80A在不同温度下热压变形后的微观结构进行表征。基于对动态再结晶过程关键参数-再结晶体积百分含量(volume fraction of DRX)、晶界取向差分布(misorientation angle distribution)和孪晶界含量(fraction of twin boundaries)的量化分析,实现对动态再结晶机制的辨别。充分发挥了EBSD大面积定量分析的优点,展示了其在量化分析金属材料动态再结晶机制中的优势。

关 键 词:背散射电子衍射  动态再结晶  再结晶体积百分含量  晶界取向差分布  孪晶界含量

Application of EBSD in the study of dynamic recrystallization mechanisms in Nimonic 80A
WU Jie-qiong,CHEN Ke,CHEN Xing-fang,TIAN Sheng,SHEN Zhi,ZHANG Lan-ting,SHAN Ai-dang. Application of EBSD in the study of dynamic recrystallization mechanisms in Nimonic 80A[J]. Journal of Chinese Electron Microscopy Society, 2011, 30(4): 356-359
Authors:WU Jie-qiong  CHEN Ke  CHEN Xing-fang  TIAN Sheng  SHEN Zhi  ZHANG Lan-ting  SHAN Ai-dang
Affiliation:1.Shanghai Jiao Tong University,School of Matierial Science and Engineering,Shanghai 200240; 2.Shanghai Electric Power Generation Equipment Co.,Ltd.Shanghai Turbine Plant,Shanghai 200240,China)
Abstract:Electron backscatter diffraction(EBSD) was applied to characterize the microstructures of Nimonic 80A deformed at elevated temperature.Based on quantitative analyses of key dynamic recrystallization(DRX) parameters,including volume fraction of DRX,misorientation angle distribution,and fraction of twin boundaries,DRX mechanisms occurring during the hot working were studied and successfully identified for different hot-working temperatures.With the advantage of fast indexing for large-area quantitative analyses,EBSD was demonstrated by this work to have a high potential in the study of DRX mechanisms in metals.
Keywords:EBSD  DRX  volume fraction of DRX  misorientation angle distribution  fraction of twin boundaries
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