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: casting magnesium alloy; void volume fraction; void evolution equation; constitutive model; elastoplasticity fraction[2-4] and the continuous supposition......
; void volume fraction; elastoplasticity; constitutive model 1 Introduction Due to lightweight, being easily shaped and recycled, casting magnesium alloys are predestined for light-weight... Gurson model to account for the final failure of materials at a realistic value of void volume fraction. FAN et al[11] put forward a formulation of constitutive relations to describe the mechanical......
by air cooling. Hot rolling in beta phase field resulted in coarse beta grains transforming to martensite by cooling. Otherwise, rolling in the alpha/beta phase filed gave rise to a partially globularized... treatment after rolling gives rise to more globularized and coarser α grains. It manifests that static globularization of partially globularized α grains is apparently responsible for microstructural......
by NaOH possess a higher thermal decomposition range. Key words: organic binder; humin fraction; infrared spectrum; oxidized pellets 1 Introduction Various binders are traditionally employed... in the presence of 0.75% (mass fraction) AQ possesses more groups of -COOR and -COOH than the MHA binder obtained without AQ. And assistant AQ can prevent soluble humic substances from being destroyed......
: 纤维体积分数; C/C复合材料; 力学性能; 断裂机理 中图分类号:TB332 文献标识码:A 文章编号: 1672-7207(2005)03-0375-05 Effect of fibre volume fraction on mechanical performances of C/C composites LI Jiang-hong, XIONG Xiang, ZHANG Hong... fraction of 40%, 30% and 25% densifying through chemical vapour infiltration for three times. The graphitization degree of C/C composites at different high treatment temperatures was studied by means......
using tetraethyl orthosilicate (TEOS) and boric acid stabilized aluminum acetate (BAA) as raw materials. The results show that, when the sol mass fraction varies from 15.0% to 37.5%, the surface..., and the average diameter of as-spun fibers increases from 1 283 nm to 3 921 nm. The viscosity of spinning solution is the dominant factor that affects the fiber diameter when the mass fraction......
Trans. Nonferrous Met. Soc. China 29(2019) 1138-1151 Modeling of dynamic recrystallization volume fraction evolution for AlCu4SiMg alloy and its application in FEM Guo-zheng QUAN1, Rui-ju SHI1, Jiang... (dσ/dε versus σ) were plotted to identify the critical strains for DRX initiation (εc). By further derivation of the related material constants, the DRX volume fraction equation and the strain for 50......
fraction LI Litao1, 2, CHEN Dexin3, GAO Qian1, 2 (1. College of Civil and Resource Engineering, University of Science and Technology of Beijing, Beijing 100083, China； 2. Key Laboratory High-Efficient... of diffusion theory, the theoretical formula of filling slurry mass fraction distribution was derived by analyzing the force of solid particles in filling slurry and combining with the probability......
fraction changing of the two phase flow were analyzed. In the distribution states of the core flow, stratified flow, and the uniform distribution flow in oil-in-water two-phase flow, the effects of different oil fraction on ultrasonic attenuation were numerically simulated and experimentally verified. The results show that different phase distributions and phase fractions have a great influence......
