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field It is assumed that the drawing forming belongs to three-dimension stable plastic flow field, meanwhile, as shown in Fig.3, even distribution of flow velocity vz along z-axis direction... Special-shaped tube drawing forming and conformal optimization of die cavity QI Hong-yuan(齐红元), ZHU Heng-jun(朱衡君) School of Mechanical and Electric Control Engineering,Beijing Jiaotong University......
effectively in forming longitudinal vortices. In all states of submergence and within 42%-58% of the channel width from outer bank (25-35 cm of the inner bank), vertical velocity is positive (upward...J. Cent. South Univ. (2016) 23: 2984-2998 DOI: 10.1007/s11771-016-3362-z Numerical investigation of flow pattern and components of three-dimensional velocity around a submerged T-shaped spur dike......
were prepared using laser rapid forming (LRF) with Ti-6Al-4V alloy as powder material, and the samples were annealed. The microstructure and high temperature mechanical properties of laser formed... Experimental The experiments were carried out on a laser rapid forming system, which consisted of a 5 kW continuous wave CO2 laser, a special laser rapid forming machine and a high precision powder......
Size effect of sandstone after high temperature under uniaxial compressionSU Hai-jian(苏海健)1, JING Hong-wen(靖洪文)1, MAO Xian-biao(茅献彪)1, ZHAO Hong-hui(赵洪辉)1, YIN Qian(尹乾)1, WANG Chen(王辰)2(1. State Key... of Mining & Technology, Beijing 100083, China)Abstract:Uniaxial compression tests on sandstone samples with five different sizes after high temperature processes were performed in order to investigate......
During spray forming, a liquid metal stream is disintegrated into a spray of droplets by high-pressure gas jets and the droplets are subsequently propelled toward a substrate where they impinge...) play important roles in the contour and the wall thickness of the tube prepared by spray forming. But the angular velocity (w) of the substrate tube has little effect on the buildup of the deposit unless......
at a forming velocity of 10 mm/s. 2.3 Differential scanning calorimetry DSC samples were prepared from the AW-6016-T4 sheet in different conditions. These tests were carried out using a Netzsch-DSC 204... analysis of two Al-Mg-Si alloys [J]. Journal of Materials Processing Technology, 2014, 214: 756-766. [5] YING L U O, FRIEDMAN P, MING C, LIN G A O. Warm forming behavior of high strength aluminum alloy......
NbMoTiVSix refractory high entropy alloys strengthened by forming BCC phase and silicide eutectic structureQin Xu1,Dezhi Chen2,Chongyang Tan1,Xiaoqin Bi1,Qi Wang2,Hongzhi Cui3,Shuyan Zhang4,Ruirun... properties of refractory high entropy alloys,silicide was introduced and NbMoTiVSix(x=0,0.1,0.2,0.3,and 0.4,molar ratio) refractory high entropy alloys are prepared by vacuum arc melting.Phase......
of the high temperature tensile experiment show that, as to spray-formed HSS, there is a possibility of superplastic deformation in the range of 780-810 ℃. Key words:spray forming; high speed steel...MICROSTRUCTURAL CHARACTERISTICS AND MECHANICAL PROPERTIES OF SPRAY FORMED HIGH SPEED STEEL FOR WORK ROLL J.G.Zhang1,D.S.Sun1,H.R.Le1,J.F.Fan1,C.D.Zhou1,Y.J.Lin1 (1.Baosteel Technical Centre......
wall angle or to achieve a high forming performance, it is largely dependent on empirical designs. In order to research multi-stage forming further, the effect of forming stages (n) and angle interval...Thickness distribution of multi-stage incremental forming with different forming stages and angle intervalsLI Jun-chao(李军超), YANG Fen-fen(杨芬芬), ZHOU Zhi-qiang(周志强) (College of Materials Science......
Effect of Zr Addition on Resistance to High Temperature Softening and Resistivity of 6082 Al-Mg-Si Alloys SHAO Guang-jie1,SUN Bao-liang2,ZHANG Pei-pei1,LI Jing1,JIN Man1 (1.Material Science Department, Shanghai University, 200072, Shanghai, China;2.Shanghai Huizhong Automotive Manufacturing Co., Ltd. Shanghai, China) 摘要:The influence of zirconium on the resistance to high temperature softening......