%0 Journal Article
%T Modeling for flow stress of the nickel-based GH4169 superalloy at high temperature deformation<br>镍基高温合金GH4169高温变形流动应力模型研究
%A LI Miaoquan
%A YAO Xiaoyan
%A LUO Jiao
%A LIN Yingying
%A SU Shaobo
%A WANG Hairong
%A <br>李淼泉
%A 姚晓燕
%A 罗 皎
%A 林莺莺
%A 苏少博
%A 王海荣
%J 金属学报
%D 2007
%I 
%X Isothermal compression test for a nickel-based superalloy GH4169 has been carried out at a Thermecmaster-Z simulator. According the analysis of experimental results, the peak stress and steady stress significantly decreased with increasing of the deformation temperature and decreasing of the strain rate, and the deformation temperature would also affect the critical value of strain to reach the steady flow at the high temperature deformation. Meanwhile, a model for flow stress of the alloy at high temperature deformation has been established in terms of the fuzzy artificial neural network. The maximum difference between the calculated and the experimental results is 10.18%, the average difference is 2.11%. The calculated precision is better than that through the regression method.
%K Ni-based superalloy
%K isothermal compression
%K flow stress
%K fuzzy artificial neural network
%K flow stress model<br>镍基高温合金
%K 热模拟压缩
%K 流动应力
%K 模糊神经网络
%K 流动应力模型
%K 镍基高温合金
%K 高温变形
%K 流动应力
%K 应力模型
%K 研究
%K HIGH
%K TEMPERATURE
%K DEFORMATION
%K SUPERALLOY
%K FLOW
%K STRESS
%K MODEL
%K 回归法
%K 计算精度
%K 差为
%K 压缩实验
%K 网络理论
%K 模糊神经
%K 运用
%K 应力特征
%K 大小
%K 变形程度
%K 稳态变形
%K 影响
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=874A1CE7C8235F7F139A38320D4659BF&yid=A732AF04DDA03BB3&vid=BE33CC7147FEFCA4&iid=9CF7A0430CBB2DFD&sid=AB8B0EE7E1A96CB2&eid=72D13CE6C162BDF4&journal_id=0412-1961&journal_name=金属学报&referenced_num=2&reference_num=15