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) developed by PRASAD et al [18, 19]. This model was widely used to study the plastic deformation of metal materials at high temperature. In this model, the materials under elevated temperature deformation.... The results show that the flow stress decreased with decreasing strain rate and increasing deformation temperature. At low deformation temperature (≤673 K) and high strain rate (≥1 s-1), the main flow softening......
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universal testing machine and a high-speed tensile testing machine.The plastic deformation mechanism was investigated from the perspectives of the strain rate sensitivity index,activation volume and dynamic...Plastic Deformation Mechanism of Dual-phase Steel at Different Strain Rates庞启航1,2,ZHAO Zhenduo3,徐梅3,徐振1,2,ZHAO Tan21. School of Materials and Metallurgy, University of Science and Technology......
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assumption that 90% of plastic work is converted into the heat resulting in increase in temperature in adiabatic shear band, the increment of the temperature distribution is presented. Next, the average... effect is obtained according to the Johnson-Cook constitutive relation, the increment of the plastic shear strain distribution, the plastic work and the temperature in the next time step......
J. Cent. South Univ. Technol. (2008) 15(s1): 135-139 DOI: 10.1007/s11771-008-332-0 Experimental evaluation on high temperature rheological properties of various fiber modified asphalt binders...: High temperature rheological properties of fiber modified asphalt binders and impact of the type and content on such properties were studied. Three types of fiber, including polyester (PET......
of the precipitated phase. Key words: zinc alloy; dynamic recrystallization; high temperature deformation; polyphase alloy 1 Introduction Peritectic alloys have been targeted as the most appealing engineering...) [17] SHEN Kun, WANG Ming-pu, GUO Ming-xing, LI Shu-mei. Study on high temperature deformation characteristics of Cu-0.23%Al2O3 dispersion-strengthened copper alloy [J]. Acta Metallurgica Sinica, 2009......
] SPIGARELLI S, EL MEHTEDI M, CABIBBO M, EVANGELISTA E, KANEKO J, J?GER A, GARTNEROV V. Analysis of high-temperature deformation and microstructure of an AZ31 magnesium alloy [J]. Materials Science... the use of Mg in mechanical performance critical applications. Hot deformation (300-400 ℃) proves itself a desirable shape forming technique for high performance Mg parts[2]. Generally......
Flow behavior of Ti-46.2Al-2.5V-1.0Cr-0.3Ni alloy in secondary hot deformation SI Jia-yong(司家勇), HAN Peng-biao(韩鹏彪), CHANG Xia(昌 霞), ZHANG Ji(张 继) High Temperature Material Research Division... for high temperature structural applications such as automotive and aerospace engine components, and had been investigated extensively in the last decades[1-3]. Thermomechanical treatment has been used......
the growth of the primary silicon size, the deformation temperature was chosen between 600℃ and 1100℃ in the liquid-solid two-phase region. Under a high strain rate the specimens tend to damage seriously...Article ID: 1003-6326(2005)05-1125-05 Effect of deformation temperature and strain rate on semi-solid deformation behavior of spray-formed Al-70%Si alloys ZHANG Di(张 迪)1, YANG Bin(杨 滨)1......