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Analysis on flow stress of magnesium alloys during high temperature deformation YANG Ya-qin(杨亚琴), LI Bao-cheng(李保成), ZHANG Zhi-min(张治民) College of Materials Science...; Abstract: The flow stress of magnesium alloys during hot compression at different temperatures and strain rates......
Analysis of flow stress of ZK60 wrought magnesium at elevated temperatures YANG Ya-qin(杨亚琴)1, LI Bao-cheng(李保成)1, ZHANG Zhi-min(张治民)1, 2, ZHANG Xing(张 星)1 1.College of Materials Science... conducted hot deformation experiments on the ZK60 alloy and recorded the flow stress curves. By investigating the properties of the curves and the deformation parameters, the optimized deformation......
was calculated. Specimens have three kinds of starting microstructures, i.e. as-forged, relief annealed and duplex. The true strain-stress curves show that the duplex microstructure has the lowest flow resistance... ℃ for 24 h and air cooled (Fig.1(c)). 3.2 Flow behavior The true stress-strain curves of three kinds of starting microstructures were put together corresponding to the same test conditions......
Dependence of α-phase size on flow stress during dynamic recrystallization steady state in Ti60 alloyHui Li,Zhang-Long Zhao,Hong-Zhen Guo,Yong-Quan Ning,Ze-Kun Yao,Kai LiSchool of Materials Science and Engineering, Northwestern Polytechnical University摘 要:The dependence of a-phase size on flow stress was characterized by a proposed kinetic model during......
Trans. Nonferrous Met. Soc. China 22(2012) 2370-2378 Effect of flow stress-strain relation on forming limit of 5754O aluminum alloy WANG Hai-bo1, WAN Min2, YAN Yu1 1. College of Mechanical...; accepted 8 August 2012 Abstract: A modified Swift type flow stress-strain relation was presented in order to describe the uniaxial tension test curve reasonably. The FLD-strain (forming limit diagram made......
to 1 s-1. A correction of flow stress for deformation heating at a high strain rate was carried out. Based on the corrected data for deformation heating, a hyperbolic sine constitutive equation... with the experimental results, which confirms that the developed constitutive equations can be used to predict the flow stress of NZ30K alloy during hot deformation. Key words: NZ30K alloy? magnesium alloy......
J. Cent. South Univ. Technol. (2008) 15(s1): 140-144 DOI: 10.1007/s11771-008-333-z Numerical simulation of gas-liquid two-phase jet flow in air-bubble generator CHEN Wen-yi(陈文义)1, WANG Jing-bo...-bubble generator is the key part of the self-inspiration type swirl flotation machines, whose flow field structure has a great effect on flotation. The multiphase volume of fluid (VOF), standard k-ε......
Effect of Relative Grain Size on the Flow Stress of Polycrystalline FCC Sheets杨梅Advanced Vocational Technical College, Shanghai University of Engineering Science摘 要:flow stress was investigated, which was induced by various grain boundary constraints when the ratio of thickness-to-grain size was changed. The simulated......
Flow stress model considering the transformation-induced plasticity effect and the inelastic strain recovery behaviorHai-yan Yu and Li Bao School of Automotive Engineering, Tongji University, Shanghai 200092, China摘 要:On the basis of continuum mechanics and the Mori-Tanaka mean field theory, a micro-mechanical flow stress model that considered both......