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Trans. Nonferrous Met. Soc. China 20(2010) s868-s872 Effect of high shear rate on solidification microstructure of semisolid AZ91D alloy ZHU Guang-lei (朱光磊) 1, XU Jun (徐 骏) 1, ZHANG Zhi..., which can be attributed to the increasing of effective nucleation rate caused by the extremely uniform temperature due to high shear rate and high degree of turbulence. Comparing with low rotation......
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外, 还对成形零件的微观组织进行了初步的SEM观察分析. 结果表明, 成形零件的微观组织无明显粗化, 其孔洞率小于1.5%. 关键词: Al-6Mg-0.2Sc合金; 高应变速率超塑性; 超塑性胀形; 微观组织 中图分类号: TG146.2 文献标识码: A High strain rate superplasticity of Al-6Mg-0.2Sc alloy CHEN... rates range of 2.0 ×10-4-2.0×10-2s-1 with a maximum elongation-to-failure of 308% recorded at 450℃ and an initial strain rate of 2.0×10-2s-1. At the same time, high strain rate superplastic (HSRS) bulging......
Coupled Influence of Temperature and Strain Rate on Tensile Deformation Characteristics of Hot-Extruded AZ31 Magnesium AlloyYing Yan1,Wan-Peng Deng1,Zhan-Feng Gao1,Jing Zhu1,2,Zhong-Jun Wang2,Xiao-Wu... of temperature T and strain ratee on the deformation features of AZ31 Mg alloy,mechanical behaviors and microstructural evolutions as well as surface deformation and damage features were systematically examined......
TiO2/graphene nanocomposites as anode materials for high rate lithium-ion batteriesTANG Yi-ping(唐谊平), WANG Shi-ming(王诗明), TAN Xiao-xu(谭晓旭), HOU Guang-ya(侯广亚), ZHENG Guo-qu(郑国渠) (College of Chemical... that the TiO2/GNS electrode exhibit higher electrochemical performance than that of TiO2 electrode regardless of the rate. Even at 500 mA/g, the capacity of TiO2/GNS is 120.3 mAh/g, which is higher than......
resulting from the effects of hydrogen gas. Key words: annealing; 5083F Al-Mg alloy; corrosion; seawater; slow strain rate tests 1 Introduction The fiber-reinforced plastic (FRP) composite materials... for the slow strain rate tests (SSRTs) were also exposed to natural seawater. These were fitted with a jig for an Instron machine. The SSRT was carried out at a strain rate of 0.001 mm/min, during......
the plastic deformation occurring in the strain-hardening stage. Aiming at Ti-6Al-4V, the effect of strain rate on the evolution of the local damage variable at the ASB center was investigated. In addition, a parametric study was carried out, including the effects of strain-hardening exponent, strain rate sensitive coefficient, thermal-softening exponent, static shear strength, strain-hardening......
and Applications, 2009, 28(3):68-76． [11] 冯悦, 肖守讷, 朱涛, 等. 材料应变率效应对2类吸能结构碰撞性能的影响[J]. 中南大学学报(自然科学版), 2018, 49(10): 2625-2635. FENG Yue, XIAO Shoune, ZHU Tao, et al. Influence of material strain rate effect..., 8(6): 393-395. MENG Guangcheng, TAI Yonggang. Study on the effect of material strain rate on the simulation result of guardrail collision[J]. Journal of Highway and Transportation Research......
be related to the difference of solid solution strengthening caused by phase change during the creep tests. Key words: Al-5356 alloy; transient creep; phase change; low strain rate 1 Introduction.... As another creep stage, transient creep is less studied, but it is extremely important at very low strain rate because identification of the secondary creep stage requires very long testing time, even......
Layer Thickness-Dependent Hardness and Strain Rate Sensitivity of Cu–Al/Al Nanostructured MultilayersYa-Qiang Wang1,Zhao-Qi Hou1,Jin-Yu Zhang1,Xiao-Qing Liang1,Gang Liu1,Guo-Jun Zhang2,Jun Sun11... of the alloyed Cu–Al monolithic thin films. The strain rate sensitivity(SRS, m),however, decreased monotonically with reducing hAl. The layer thickness-dependent strengthening mechanisms were discussed......
