Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面


Transactions of Nonferrous Metals Society of China

Vol. 28    No. 8    August 2018

[PDF Download]    [Flash Online]    


Prediction on hot deformation behavior of spray-formed 7055 aluminum alloy via phenomenological models
Xiang-dong WANG1, Qing-lin PAN1, Shang-wu XIONG2, Li-li LIU1, Yuan-wei SUN1, Wei-yi WANG1

1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. School of Light Alloys Research Institution, Central South University, Changsha 410083, China

Abstract:Hot compression tests in the temperature range of 340-450 °C and strain rate range of 0.001-1 s-1 of spray-formed 7055 aluminum alloy were carried out to study its hot deformation behavior. Three phenomenological models including Johnson-Cook, modified Fields-Backofen and Arrhenius-type were introduced to predict the flow stresses during the compression process. And then, a comparative predictability of the phenomenological models was estimated in terms of the relative errors, correlation coefficient (R), and average absolute relative error (AARE). The results indicate that Johnson-Cook model and modified Fields-Backofen model cannot well predict the hot deformation behavior due to the large deviation in the process of line regression fitting. Arrhenius-type model obtains the best fit through combining the effect of strain rate and temperature.


Key words: spray-formed 7055 aluminum alloy; hot deformation behavior; phenomenological models; statistical analyses

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱