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杜阳,李拔,付航,童帅,胡建文,孙新军.EB炉流程纯钛的热变形和动态再结晶行为研究[J].稀有金属材料与工程(英文),2021,50(1):29~34.[Du Yang,Li Ba,Fu Hang,Tong Shuai,Hu Jianwen and Sun Xinjun.Study on hot deformation and dynamic recrystallization behavior of pure titanium in EB furnace process[J].Rare Metal Materials and Engineering,2021,50(1):29~34.]
Study on hot deformation and dynamic recrystallization behavior of pure titanium in EB furnace process
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Received:November 26, 2019  
DOI:
Key words: pure titanium  EB furnace  hot deformation  dynamic recrystallization  mechanism
Foundation item:国家重点研发计划
Author NameAffiliation
Du Yang,Li Ba,Fu Hang,Tong Shuai,Hu Jianwen and Sun Xinjun  
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Abstract:
      The hot deformation behavior of pure titanium in EB furnace process (EB-Ti) with centimeter scale original grain size at different deformation temperature and deformation rate was studied by thermal compression experiment, and the recrystallization mechanism of EB-Ti was discussed based on the electron back scattering diffraction (EBSD) technology. The results show that the hardening behavior of EB-Ti in the process of hot deformation has typical "three-stage" characteristics. In the start stage, the hardening ability is rapid linearly declined; in the middle stage, it rapidly recovers to a peak; in the final stage, it re-declines from the peak. The three-stage phenomenon is related to twinning in the deformation process. EBSD results also show that the recrystallization mechanism of EB-Ti in the process of hot deformation is mainly a discontinuous dynamic recrystallization.