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. The fractal dimension of EIS at different time was studied. The corrosion process and EIS evolution are divided into three stages. In the initial stage, EIS is composed of two overlapped capacitive arcs... with the immersion time. The fractal dimension obtained from the time records of EIS seems to be a promising tool for the analysis of corrosion morphology because of its direct relationship......
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Plasma surface alloying of titanium alloy for enhancing burn-resistant property ZHANG Ping-ze(张平则) 1, XU Zhong(徐 重) 1,2, ZHANG Gao-hui(张高会) 2, HE Zhi-yong(贺志勇) 2,YAO Zheng-jun(姚正军) 1 1.School... bombardmen induced surface sputtering. 3.2 Burn-resistance experiments The burn-resistance experiments are performed using 2 kW laser machine. The surface alloyed samples of titanium alloy were irradiated......
NUMERICAL SIMULATION OF CONTROLLING IN TITANIUM ALLOY SHEETS WELDING RESIDUAL STRESS BY TRAILING PEENING X.S.Liu1,W.L.Xu1,D.Y.Yu1,Z.B.Dong1,H.Y.Fang1 (1.State Key Laboratory of Advanced Welding... of titanium alloy. Numerical simulation of conventional welding and welding with trailing peening of the titanium alloy sheet is carried out,using nonlinear finite element theory and the engineering......
temperature between liquidus and solidus of matrix alloy. Diffusion welding of SiCw/6061.Al was successfully realized with appropriate welding parameters.关键词:...DIFFUSION WELDING FOR 6061 Al REINFORCED WITH SiCw WHISKERNIU Jitai LIU Liming HAN Lihong Harbin Institute of Technology摘 要:<正> The weldability......
coefficient, as seen in Fig. 5, 2) decrease of diffusion coefficient of impurities in the liquid metal, and 3) an increase in viscosity of liquid metal. The decreasing modified separation coefficient... rapidly in the last stage, reaching 2260 mg/kg, and the modified separation coefficient of Ti is 1/19.02. The diffusion of the impurity Ti in liquid metal can reach a quasi-equilibrium state......
Fractal Dimensions of Hydrogen Induced Brittle Fracture of Titanium AluminideYue ZHANG Yanbin WANG Lijie QIAO Wuyang CHU Chimei HSIAO Dept.of Materials Physics,University of Science and Technology... and the fractal dimension DF of the fracture surface was derived,i.e,InK1*=(1/2)In2γE’+(1/2)In(df/L0)(1-DF)The real surface energy can be calculated based on the measured linear relation of the InK1* vs......
Diffusion bonding of Al alloy to Al2O3 ceramicFENG Ji-cai(冯吉才), WANG Da-yong(王大勇), LI Zhuo-ran(李卓然), LIU Hui-jie(刘会杰)(National Key Laboratory of Advanced Welding Production Technology,Harbin... of the joint is 108MPa, and the shear strength of the joint is 45MPa.Key words:Al alloy; Al2O3 ceramic; diffusion bonding......
. Moreover, the water- inrush mechanisms in undersea mining were revealed, and the theoretical basis for safely mining in metallic deposits was also provided. 2 Calculation principle of fractal dimension..., the dimensions of point, line, square and cube are 0, 1, 2 and 3, respectively, while the object’s fractal dimension is not necessarily an integer, but a fraction. For example, calculated by Hack......
to get good quality welds of AA2219 aluminium alloys. Key words: friction stir welding window; aluminium alloy; lowest hardness distribution profile; tensile strength 1 Introduction Friction stir welding... Fig. 2 Friction stir welding window based on macrostructural analysis 4 Results 4.1 Tensile properties Transverse tensile properties of FSW joints such as yield strength, tensile strength and joint......