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Constitutive equation and hot deformation characteristic of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with equiaxed microstructureHUANG Lujun,GENG Lin,LI Aibin,WANG Guisong,and SHI Lei School of Materials... phase temperature region,the titanium alloy shows a stress softening at high strain rates and a steady flow stress at low strain rates.On the basis of the peak stress data,the constitutive equations......
and the constitutive relation involving the void evolution. By assuming the voids in casting magnesium alloys were spherical, the growth equation of the voids was obtained from the incompressibility... of the voids was presented. By introducing the presented void-evolution equation to a nonclassical elastoplastic constitutive equation, a constitutive model involving the void evolution was put forward......
. The constitutive equation and material constants (Q, n, α lnA) are obtained according to the hyperbolic sine function and Zener-Hollomon parameter. Besides, dynamic recrystallization (DRX) grain size model... dissipates through annihilation of dislocations [11]. So, it is important to understand the DRX behavior in hot deformation process. In recent researches, the constitutive equation and processing map......
Optimized constitutive equation of material property based on inverse modeling for aluminum alloy hydroforming simulation LANG Li-hui(郎利辉)1, LI Tao(李 涛)1, ZHOU Xian-bin(周贤宾)1, B. E. KRISTENSEN2... for constitutive models by inverse modeling in which the friction coefficients were also considered in 2D and 3D simulations. With consideration of identified simulation parameters by inverse......
the observed rate-dependent fracture phenomena from static to high strain-rate impulse loading. LI and GU[11] got the constitutive equation for rock undergoing impacting by curve fitting. CHANG and YANG[12...J. Cent. South Univ. Technol. (2008) 15: 230-236 DOI: 10.1007/s11771-008-0044-5 Constitutive model of rock based on microstructures simulation YE Zhou-yuan(叶洲元), HONG Liang(洪 亮), LIU Xi-ling(刘希......
-strain curves of 7055 aluminium alloy under different conditions are obtained and the flow stress increases with ascending strain rate and descending temperature. For Arrhenius constitutive equation, each... on experimental results and a modified constitutive equation is established for more accurate prediction of flow behavior of 7055 aluminium alloy. The effects of temperature and strain rate on power......
-Ti SMA under compression at the strain rates of 0.001-1 s-1 and at the temperatures ranging from 600 to 1 000 ºC, the constitutive equation of Ni-Ti SMA with respect to the Zener-Hollomon...Constitutive behavior of Ni-Ti shape memory alloy under hot compressionJIANG Shu-yong (江树勇)1 , ZHANG Yan-qiu (张艳秋)1, ZHAO Ya-nan (赵亚楠), Tang Ming (唐明)1, Yi Wen-lin (易文林)2(1. Industrial Training......
stages constitutive equation was proposed. The conclusions are as follows: The axial strain, peak strain and maximum strength of seafloor massive sulfide increase with the confining pressure. The elastic modulus of the metal sulfide samples is decreased sharply with the increase of confining pressure. According to characteristics of seafloor massive sulfide, the constitutive equation is divided......
A phenomenological constitutive equation for Rene 95 PM alloy and its application to isothermal forging process of turbine diskMaicang Zhang, Jianxin Dong, Yanping Zeng, Xishan XieMaterials Science.... Application of the constitutive equation in predicting forming loads and flow behavior and temperature distribution in both upper and lower dies in an isothermal forging process of turbine disk of large......
constitutive equation[12], because such phenomenon is very complicate. WANG and ZHOU[11] performed the recovery tensile impact tests in a bar-bar tensile impact apparatus (BTIA, a kind of Split... Johnson-Cook thermo-viscoplastic constitutive equation as follows: σ = σ0.015+s(ε-0.015) = (3......
