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) and synthetically thermal analysis (STA). Detailed investigations of the influence of laser power and scanning rate on the preparation and microstructural parameters of the ternary... of the ternary Al2O3/YAG/ZrO2 eutectic ceramic grown at different laser powers and scanning rates. During the laser zone remelting, the laser scanning rate and laser power are the primary solidification......
焊缝中心为细小等轴晶,熔池边缘为柱状晶.焊缝上边缘基本不存在热影响区,在焊接接头底部存在约10 μm宽度的热影响区. 关键词:TiNiNb形状记忆合金；激光微焊接；焊缝成形；显微组织；性能；激光功率 中图分类号:TG 456.7 文献标志码:A Influence of laser power on formation... mm-thick TiNiNb shape memory alloy (SMA) sheet, butt welding was carried out using low power impulse laser. Influences of laser power on the weld formation, cross section morphology, tensile strength......
a HL-2000 type CO2 laser source. The beam cross section (shape and area), beam power and scanning speed are the main parameters to be adjusted. For the present study, these parameters were set as 5 mm, 3... due to the continuous laser power input [14]. A composition gradient is established at this stage, especially at the bottom of the melt close to the matrix, as shown in Fig.7(b). The C atoms diffuse......
can be used in high average power solid state lasers. Key words:Yb3+ ion; laser glass; structure; spectral property; rare earths; [全文内容正在添加中] ...Investigation on Structures and Properties of Yb3+-Doped Laser Glasses He Shaobo1,Lu Anxian2,Tang Xiaodong1,Liu Shujiang2 (1.Research Institute of Laser Fusion, China Academy of Engineering Physics......
was 5J32 aluminum alloy, and the laser power, welding speed, and laser incidence angle were used as the control variables. The weld bead shape and the tensile shear strength were evaluated in order... estimation models using three different regression models were also suggested. The input variables were the laser power, welding speed, and laser incidence angle, and the output was the tensile shear......
Key Laboratory of Laser Manufacture of Science and Technology Ministry,Jiangsu University, Zhenjiang 212013, China; 2. School of Mechanical and Power Engineering, East China University of Science... duration of 20 ns. The laser beam spot size was maintained at 7 mm in the full width at half maximum of the intensity profile. The laser power density used was 1-5 GW?cm-2. In this configuration, aluminum......
. The results show that laser power and scanning speed had a dramatical influence on the width and height of single-track clads. According to the columnar to equiaxed transition curve of Inconel 625, the grain morphology can be predicted during the LSF process. With the increasing laser power and the decreasing scanning speed, the segregation degree of Si, Nb, Mo, the volume fraction and size of Laves phase......
: the power P=6 kW, the scanning speed v=10.8 mm/s, 15 mm/s and 21.4 mm/s, and the beam diameter D=6 mm; the thickness of the pre-coating layer h=1.0 mm and 0.5 mm; the overlap coefficient was 0.3. The laser.... When laser power and laser beam diameter is constant, scanning speed decides the energy input in the clad materials. The energy decreases with the increase of the scanning speed. If the scanning speed......
fabrication [9-11]. With respect to SLM processing parameters, laser power P, the scanning speed v, powder layer thickness t and hatching spacing h are the most critical ones [4]. Those parameters often... Ni50.8Ti49.2 by varying the processing parameters at a constant laser energy density level. YANG et al [18] found that the transformation temperature is dependent on laser power and developed......
NC code generation for laser assisted turn-mill of various type of clovers and square section membersCHOI Jun-young, LEE Choon-man(Department of Mechanical Design and Manufacturing Engineering, Changwon National University, Changwon 641-773, Korea)Abstract:Laser assisted turning (LAT) is one of the advanced machining technologies, which uses laser power to heat the surface of a workpiece before......
