Mg-Zn-Cu-Zr镁合金的热变形行为和加工图（英文）

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Bibliographic Details
Published in:	中国有色金属学报：英文版 no. 3; pp. 756 - 764
Main Author:	余晖于化顺 Young-min KIM Bong-sun YOU 闵光辉
Format:	Journal Article
Language:	English
Published:	2013
Subjects:	人工神经网络加工图变形行为本构方程流变应力铜添加镁合金
Online Access:	Get full text
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Bibliography:	43-1239/TG Mg alloy; Cu addition; flow stress; deformation behavior; constitutive equation; artificial neural network; processing map Hui YU1,2,Hua-shun YU1,Young-min K IM2,Bong-sun YOU2,Guang-hui MIN1 1.Key Laboratory for Liquid-Solid Evolution and Processing of Materials,Ministry of Education,School of Materials Science and Engineering Shandong University,Ji＇nan 250061,China;2.Light Metals Group,Korea Institute of Mate rials Science,Changwon 642831,Korea The deformation behaviors of a new quaternary Mg-6Zn-1.5Cu-0.5Zr alloy at temperatures of 523-673 K and strain rates of 0.001-1 s-1 were studied by compressive tests using a Gleeble 3800 thermal-simulator.The results show that the flow stress increases as the deformation temperature decreases or as the strain rate increases.A strain-dependent constitutive equation and a feed-forward back-propagation artificial neural network were used to predict flow stress,which showed good agreement with experimental data.The processing map suggests that the domains of 643-673 K and 0.001-0.01 s-1 are corresponded to optimum conditions for hot working of the T4-treated Mg-6Zn-1.5Cu-0.5Zr alloy.
ISSN:	1003-6326