鲁龙龙,张彦敏.双态组织Ti80合金的动态再结晶行为[J].稀有金属材料与工程,2021,50(8):2979~2985.[Lu Longlong,Zhan Yanmin.Dynamic recrystallization behavior of Ti80 alloy with bimodal structure[J].Rare Metal Materials and Engineering,2021,50(8):2979~2985.]
双态组织Ti80合金的动态再结晶行为
投稿时间:2020-09-11  修订日期:2020-10-28
中文关键词:  Ti80合金  动态再结晶  临界应变  动力学
基金项目:河南省杰出人才创新基金;河南省重点攻关项目
中文摘要:
      采用 Gleeble-1500 热模拟实验机对双态组织Ti80合金在变形温度为860-980℃、应变速率为 0.01~1变形条件下进行了热压缩模拟实验,研究了合金热变形过程中的流变应力行为,利用加工硬化率确定了不同变形条件下动态再结晶临界应变。结果表明,动态再结晶是Ti80合金热变形过程中的重要软化机制,并发现动态再结晶临界应变随温度的升高和应变速率的降低而减小。基于Z参数和改进后的Avrami方程,构建了Ti80合金动态再结晶临界应变与动力学模型。
Dynamic recrystallization behavior of Ti80 alloy with bimodal structure
英文关键词:Ti80 alloy  dynamic recrystallization  critical strain  kinetics
英文摘要:
      The thermal compression tests of Ti80 alloy with bimodal microstructure was conducted at the deformation temperature of 860-980℃ and the strain rate of 0.01~1s^(-1)on the Gleeble-1500 thermal-mechanical simulator. The flow stress and dynamic recrystallization behavior of the alloy during hot deformation were investigated, the critical strain of dynamic recrystallization was determined with the help of the work hardening rate. The results show that dynamic recrystallization is an important softening mechanism during hot deformation of Ti80 alloy, and the critical strain of dynamic recrystallization decreases with increasing temperature and decreasing strain rate. Based on the Z parameter and the improved Avrami equation, the critical strain and kinetics model for dynamic recrystallization of Ti80 alloy were constructed.
作者单位E-mail
鲁龙龙 河南科技大学 lulonglong0102@163.com 
张彦敏 河南科技大学  
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