杨晓康,王快社,张志娟,郭敏,蔡军,杨清相.铸态TC17钛合金流动应力预测[J].稀有金属材料与工程,2020,49(4):1131~1139.[Yang Xiaokang,Wang Kuaishe,Zhang Zhijuan,Guo Min,Cai Jun,Yang Qingxiang.Flow Stress Prediction for as-cast TC17 Titanium Alloy[J].Rare Metal Materials and Engineering,2020,49(4):1131~1139.]
铸态TC17钛合金流动应力预测
投稿时间:2020-04-07  修订日期:2020-04-09
中文关键词:  铸态TC17钛合金  本构模型  流动应力
基金项目:NSFC (51574192, U1360105), Key Research and Development Program of Shaanxi (2017ZDXM-GY-036)
中文摘要:
      通过热模拟压缩试验对铸态TC17钛合金的高温变形行为进行了研究。温度范围1073-1373K,应变速率范围0.01-20s-1。建立了四种本构模型,分别是应变补偿双曲正弦模型、修正Arrhenius模型、Johnson Cook模型和修正Johnson Cook模型,用来表征铸态TC17钛合金的高温流动应力。采用相关系数、平均相对误差和相对误差统计分析了四种模型的准确性,结果表明:Johnson Cook模型不能用来描述铸态TC17钛合金高温流动应力;在α+β两相区,应变补偿双曲正弦模型精度最高,而在β单相区修正Johnson Cook模型更为准确;在整个变形温度范围内,应变补偿双曲正弦模型比其他几种模型的准确性更高。
Flow Stress Prediction for as-cast TC17 Titanium Alloy
英文关键词:as-cast TC17 titanium alloy  constitutive equation  flow stress
英文摘要:
      In this paper, hot deformation behavior of as-cast TC17 titanium alloy was investigated by isothermal hot compression tests at temperatures of 1073~1373K and strain rates of 0.01~20s-1. The four constitutive models, strain compensated Arrhenius-type (SCA), modified Arrhenius-type (MA), Johnson Cook (JC) and Modified Johnson Cook (MJC), were used to represent the elevated temperature flow behavior of as-cast TC17 titanium alloy. The suitability levels of these models were evaluated by comparing both the correlation coefficient R and the average absolute relative error (AARE). The results indicated that JC model the JC model is inadequate to predict the flow stress of as-cast TC17 titanium alloy; the SCA model has the highest accuracy to descript of flow behavior of TC17 alloy in the α+β two-phase region in the studied range. While the MJC model exhibits the highest accuracy in the β single-phase region. Within the whole deformation temperature range, the SCA model proposed in this paper can more accurately conform to the high-temperature rheological curve of as-cast TC17 titanium alloy.
作者单位E-mail
杨晓康 西安建筑科技大学 冶金工程学院 yangxiaokang2000@163.com 
王快社 西安建筑科技大学  
张志娟 西安建筑科技大学 冶金工程学院  
郭敏 西安建筑科技大学 冶金工程学院  
蔡军 西安建筑科技大学 冶金工程学院  
杨清相 西安建筑科技大学 冶金工程学院  
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