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to the degradation of finished product ratio and drum strength of sinters. When three species of biomass fuels replace 40% coke breeze respectively, the speed of sintering is increased, while the finished product ratio and the drum strength of sinters are decreased. And the smaller the fuel ratio (fix carbon mass/volatile mass) is, the lower the suitable ratio becomes when biomass replaces coke breeze......
of phosphorite from Leshan, Sichuan. The sintering experiment was carried out in a laboratory scale. The mass loss, yield, shatter strength, tumble strength, abrasion index, X-ray diffraction......
is advance, and whereas the peak hardness increases at first and then decreases which reaches its maximum when the Cu/Mg ratio closes to 6. With the increase of Mg content, the yield strength and the tensile strength increase first and then decrease, while the plasticity is just the opposite, but it maintains at a high level. The main strengthening phases are Ω phase and a bit of θ ′ phase when the Mg......
qualitative to quantitative, a novel method for CSEM (control source electromagnetic method) fields’ division was proposed. A new attenuation rate was defined for electric field strength Ex, magnetic field strength Hy, and impedance Zxy. Based on the new attenuation rate, the propagation characteristics of Ex, Hy and Zxy were studied, and the attenuation rate change of the HED (horizontal electric dipole......
be prepared by reactive hot-pressed sintering at 1450 ℃. The Al2O3 addition has the effect of the second phase strengthening which can improve the strength of the material. The mechanical properties...%, and the bending strength reaches the maximum value (512 MPa) when the mass fraction of Al2O3 is 30%. Al2O3 reactes with TiO2 under high temperature, generating Al2TiO5 with high temperature resistance......
were investigated by optical microscope, transmission electron microscope, tensile test and hardness test. The results show that the tensile strength and elongation of the joint are about 63% and 32... hardness and tensile strength is revealed. Key words: friction stir welding; 7055 aluminum alloy; microstructure; mechanical properties 7000系铝合金具有强度高,密度低等特点,广泛用作航空领域的结构材料.采用熔焊方法对这些合金进行焊接时易产生热裂纹,气孔等缺陷,焊接头的......
Equipment Design and Extreme Manufacturing, Central South University, Changsha 410083, China) Abstract: Computer aided technology for brake shoe’s lightweight study with brake’s strength... a good effect on brake shoe, i.e. the mass decreases by 17.87%, and stress only increases by 2.86%. This research work realizes the lightweight design for brake shoe and guarantees its strength......
on friction stir welding joints of high-strength aluminum alloy[J]. The Chinese Journal of Nonferrous Metals, 2009, 19(3): 484-489. [11] DING Ji-kun, WANG Dong-po, WANG Ying, DU Hui. Effect of post weld...]. 机械工程学报, 2011, 47(20): 141-145.WANG Ya-rong, HUANG Wen-rong, LEI Hua-dong. Effects of post weld heat treatment on microstructure and mechanical properties of 2A14 high strength aluminum alloy......
with high electrical conductivity and strength, as well as excellent heat resistance, were commonly used as a leadframe material. There are two processing routes for manufacturing of precipitation... at clarifying the influences of processing conditions on their final properties, strength and electrical conductivity [2]. The most important mechanisms for microstructural control to provide suitable......
: they behave like solids in the undisturbed state and like liquids during shearing provided the shear rate is high enough[1]. Semi-solid metal forming called thixoforming exploits this thixotropic and shear... equations are used since discrepancies appear between experimental rheological data. In addition to the shear-thinning behaviour[2], the constitutive equation has to describe peculiar phenomena......