张兵,岳磊,陈韩峰,张志娟,刘鹏茹,赵芬芬.铸态GH4169合金热变形行为及三种本构模型对比[J].稀有金属材料与工程,2021,50(1):212~222.[Zhang Bing,Yue lei,Chen Hanfeng,Zhang Zhijuan,Liu Pengru,Zhao Fenfen.Hot deformation behavior of as-cast GH4169 alloy and comparison of three constitutive models[J].Rare Metal Materials and Engineering,2021,50(1):212~222.]
铸态GH4169合金热变形行为及三种本构模型对比
投稿时间:2020-02-14  修订日期:2020-03-09
中文关键词:  铸态GH4169  热变形行为  本构模型
基金项目:国家自然科学基金资助(项目号51874226);镍钴资源综合利用国家重点实验室开放课题(301170504)
中文摘要:
      本文在Gleeble-1500热力模拟机上对铸态GH4169合金进行热压缩试验,变形参数为:温度(1193~1373 K)、应变速率(0.01~10s-1)、变形量50 %。通过分析真应力真应变曲线,研究铸态GH4169合金的热变形行为;对比分析了Johnson-Cook(JC)、修正的Johnson-Cook(MJC)和应变补偿Arrhenius三种本构模型的相关系数(R)和平均相对误差(AARE)。结果表明:铸态GH4169合金的流变应力随变形温度的升高和应变速率的降低而减小。JC模型、MJC模型和应变补偿的Arrhenius本构模型的相关系数(R)分别为0.891、0.956和0.961,平均相对误差(AARE)依次为29.02%、11.16%和9.31%。因此,应变补偿的Arrhenius模型能够更为精确地描述铸态GH4169的热变形行为。
Hot deformation behavior of as-cast GH4169 alloy and comparison of three constitutive models
英文关键词:As-cast GH4169  hot deformation behavior  constitutive model
英文摘要:
      In this paper, the thermal compression test of as-cast GH4169 alloy is performed on a Gleeble-1500 thermo-mechanical simulator. The deformation parameters are: temperature (1193~1373 K), strain rate (0.01~10 s-1), and deformation 50%. By analyzing the true stress and true strain curve, the hot deformation behavior of as-cast GH4169 alloy was studied; the correlation coefficients (R) and average relative errors (AARE) of the three constitutive models of Johnson-Cook (JC), modified Johnson-Cook (MJC) and strain-compensated Arrhenius model are compared and analyzed. The results show that the flow stress of as-cast GH4169 alloy decreases with the increase of deformation temperature and the decrease of strain rate. The correlation coefficients (R) of the JC model, MJC model and strain-compensated Arrhenius constitutive model were 0.891, 0.956, and 0.961, and the average relative errors (AARE) were 29.02%, 11.16%, and 9.31%, respectively. Therefore, the strain-compensated Arrhenius model can describe the thermal deformation behavior of as-cast GH4169 more accurately.
作者单位E-mail
张兵 西安建筑科技大学冶金工程学院 r.zhang1112@163.com 
岳磊 西安建筑科技大学冶金工程学院 772102409@qq.com 
陈韩峰 金川集团有限公司  
张志娟 西安建筑科技大学冶金工程学院  
刘鹏茹 西安建筑科技大学冶金工程学院  
赵芬芬 西安建筑科技大学冶金工程学院  
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