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equal channel angular extrusion (Sp-ECAE) [12], non-equal channel lateral extrusion (NECLE) [13], incremental equal channel angular pressing (I-ECAP) [14], half channel angular extrusion (HCAE) [15... of die geometry on non-equal channel lateral extrusion (NECLE) of AZ80 magnesium alloy [J]. Transactions of Nonferrous Metals Society of China, 2014, 24: 3274-3284. [14] MUHAMMAD J Q, GIRIBASKAR S......
; Abstract: The continuous extrusion forming process for producing large section copper concave bus bar under different extrusion wheel..., temperature field and damage field were investigated under different extrusion wheel angular velocities. It could provide the theoretical guide for actual production of big section copper product......
Effect of landform on aerodynamic performance of high-speed trains in cutting under cross windLIU Tang-hong(刘堂红)1,2, ZHANG Jie(张洁)1,2(1. Key Laboratory of Traffic Safety on Track of Ministry...-equation turbulent model. Results show that aerodynamic forces increase with the cutting leeward slope decreasing. The maximum adding value of lateral force, lift force, and overturning moment are 147......
was proposed according to the inclination angles. In addition, the temperature distribution of the cross section after feed rate control was predicted. The correlation equation between inclination... in laser assisted machining processes.Key words:laser assisted machining; inclination angle; feed rate control; cross section......
Numerical simulation of temperature field of AZ91D magnesium alloy during equal channel angular extrusionXiaohua ZHANG,Yuansheng CHENG and Shoujing LUO School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China摘 要:The temperature field of AZ91D magnesium alloy extruded by equal channel angular extrusion(ECAE) has been......
; 2-Cavity die; 3-External bush; 4-Internal bush; 5- Stock Fig.3 Successive processes of cold extrusion forming 3 Microstructure analysis 3.1 Microstructure in radial cross-section Products were carved... refinement. 3.2 Microstructure in axial cross-section The microstructure of aluminum in the axial section of the cone-shaped deformation zone near the interface is shown in Fig.7. A lot of strips......
be improved. For instance, taking V-shaped cutters as the research object, this does not correspond with the present practical approximate constant cross section cutters; for gage disc cutters... the size of the cutter-head’s transition zone, the fillet radius and the installed tilt angle. Next, the formulas for the rock-breaking amount for cutters with a constant cross section and for calculating......
, requiring higher pressures, low extrusion speed and/or less surface finish and section complexity, resulting in a set of materials with strength ranging from 150 to 350 MPa, with good toughness... of elasticity of steel. Since the stiffness is dependent not only on the modulus but also the section geometry, stiffness equal to that of steel is obtained at half of its weight by deepening an aluminium beam......
testing machine. And the tensile specimens with dimensions of 2 mm×7.5 mm on cross section and 20 mm in gauge length were cut parallel to the longitudinal axes of the pressed rods. 3 Results... Forum, 2006, 503/504: 721-726. [11] CHAKKINGAL U, THOMSON P F. Development of microstructure and texture during high temperature equal channel angular extrusion of aluminium [J]. J Mater Process......
of ECAP is that a sample is passed through a die with two intersecting channels equal in cross section and deformed via simple shear at the intersection of the channels[6]. Because the shearing... and bar with either circular or square cross-section. Although this shape is suitable for use in forging operations, it is not appropriate for conventional forming where materials are in the form......
