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Effects of Strain Rate and Deformation Temperature on Microstructures and Hardness in Plastically Deformed Pure AluminumF. Huang, N.R. Tao and K. Lu Shenyang National Laboratory for Materials Science... and reducing deformation temperature. The saturated size of refined subgrains in Al can be as small as about 240 nm in cryogenic dynamic plastic deformation (DPD). Grain boundaries of the DPD Al samples......
deformation based on the deterministic model and non-deterministic model [7-9]; 3) Establishing the theoretical foundation of slope evolution through coupling analysis of stress, seepage, temperature, etc... to the Jiaohe Ruins endangered cliff before and in the process of conserving. The inducing agent of the deformation is the extreme meteorological factor (temperature) in Turpan region. It can......
during the plastic deformation process at different temperatures and strain rates. The dynamic recrystallization starts when the temperature is over 473 K and the DRX grain size after hot deformation... alloys to meet the application demands. But the plastic deformation of magnesium alloys at room temperature is difficult due to the deformation of magnesium occurs mainly by slip on the basal planes......
of sheets’ flow stress with deformation temperature and strain rate can be expressed more suitably with Arrhenius equation modified by hyperbolic sine function. Structure factor A1, stress-level... melt-treatment. The axial-symmetry isothermal hot compression test has been carried out by means of he Gleeble-1500 type dynamic hot/mechanical simulation testing machine. The deformation temperature......
. The results show that the glass transition temperature of the alloy increases slightly and the supercooled liquid region(SLR) increases significantly with increasing heating rate. The deformation...) and crystallization temperature(Tx). When ΔT(=Tx-Tg) reaches 100K, it can provide conditions for studying the mechanical behavior of bulk amorphous alloy in the SLR. In the present paper the deformation......
of 0.01-10 s-1, deformation temperature range of 250-450 °C and a true strain of 0.6. The constitutive relationships among flow stress, strain rate and deformation temperature were described... with temperature increasing and strain rate decreasing. Under the experimental conditions, the products of constant α and n in the constitutive equation are stable within certain strains, and the deformation......
Group Co., Ltd., Baoji 721014, China) Abstract: Through the study on different rolling processes of TA15 titanium alloy plate, the effect of deformation temperature and deformation degree on microstructures and mechanical properties were discussed, which will lay the foundation for a batch production of TA15 plates in big scale. Key words: deformation temperature; deformation degree; microstructure......
Deformation twins and twinning at ambient temperature in cryomilled Al-Zn-Mg-Cu alloy powders CHEN Han-bin(陈汉宾)1, CHENG Jun-sheng(程军胜)2, YANG Bin(杨 滨)1, 3, ZHANG Ji-shan(张济山)1, TIAN Xiao-feng(田晓... temperature were observed in Al-Zn-Mg-Cu powders. Experimental results indicate that high strain rate at low temperature during cryomilling induces the formation of deformation twins by the climbing......
temperature of 900-1 200 °C and strain rate of 0.001-0.02 s-1. The effect of temperature, strain rate and strain on the flow stress of the alloy was evaluated. The higher the deformation temperature...Development of flow stress model for hot deformation of Ti-47%Al alloyDENG Tai-qing, YE Lei, SUN Hong-fei, HU Lian-xi, YUAN Shi-jian(School of Materials Science and Engineering, Harbin Institute......
Trans. Nonferrous Met. Soc. China 23(2013) 1549-1555 Constitutive relationship for high temperature deformation of Al-3Cu-0.5Sc alloy Guo-fu XU1,2,3, Xiao-yan PENG1, Xiao-peng LIANG2, Xu LI1, Zhi-min... Abstract: The high temperature compressive deformation behavior of Al-3Cu-0.5Sc alloy was investigated at temperatures from 350 to 500 °C, and strain rates from 0.01 to 10 s-1 with the Gleeble-1500......