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Effects of RE and Sr additions on dendrite growth and phase precipitation in AZ91D magnesium alloy ZHOU Ji-xue(周吉学), WANG Jie(王 杰), WANG Jing(王 晶), YANG Yuan-sheng(杨院生) Institute of Metal... of rare earth (RE), Sr and RE + Sr on the dendrite growth and phase precipitation in AZ91D magnesium alloy were studied, respectively. The results show that the microstructure is refined......
:A Effects of Bi doping on electrochemical corrosion and dendrite growth suppression of lead-free Sn-3.0Ag-0.5Cu solder HUA Li1, 2, 3, GUO Xing-peng1, YANG Jia-kuan2 (1. School of Chemistry and Chemical.... School of Chemistry and Life Science, Hubei University of Education, Wuhan 430205, China) Abstract: The effects of Bi doping on the electrochemical corrosion characteristics and dendrite growth......
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J. Cent. South Univ. Technol. (2010) 17: 1177-1184 DOI: 10.1007/s11771-010-0615-0 Crack tip higher order stress fields for functionally graded materials with generalized form of gradation YAN Xiu... gradation applicable to a more broad range of functionally graded materials (FGMs) was presented. With the material model, analytical expressions of crack tip higher order stress fields in a series form......
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Microscopic study of mode I crack tip deformationDeshun Fan, Caifu Qian, and Zhongjun JiangCollege of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China摘 要:<正>By simulating edge dislocation emissions from a mode I crack tip along multiple inclined slip planes, the plastic zone and dislocation......
at the limit of stability: Tip and spacing [J]. Acta Metallurgica, 1981, 29: 11-20. [16] BOUCHARD D, KIRKALDY J S. Prediction of dendrite arm spacings in unsteady and steady-state heat flow... and secondary dendrite arm spacings (λ1 and λ2, respectively). Experimental laws of λ1=f(VL, TC) and λ2 =f(tSL) were proposed. It is observed that the interdendritic region is composed......
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Metallurgica, 1986, 34(5): 823-830. [22] WANG H F, LIU F, CHEN Z, YANG G C, ZHOU Y H. Analysis of non-equilibrium dendrite growth in a bulk undercooled alloy melt: Model and application[J]. Acta... rosette to polygon, accompanied by the disappearance of divorced eutectic β-Mg17Al12 phase at grain boundary. According to the theoretical calculation of dendrite growth and solute trapping model......
position is 1/8c. Taking the maximum lift - drag ratio as the objective function, the optimal arc radius is obtained as 8%c. On this basis, the combination type of a straight line and arc of the slotted... scheme when the tip speed ratio λ is larger than 3.5, and T-line is the optimal slotting scheme when the tip speed ratio λ is less than 3.5. Taking λ=2 as an example, the analysis shows that the range......
