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J. Cent. South Univ. Technol. (2011) 18: 319-322
DOI: 10.1007/s11771-011-0698-2
hardly be found in the foam samples prepared by counter-gravity infiltration casting. The foam materials exhibit excellent mechanical properties. The void content strongly affects the mechanical properties of aluminum foams. The yield stress and plateau stress significantly increase with the decrease of void content. Raising pre-heating temperature and increasing packing pressure are effective......
Dendritic and spherical crystal reinforced metallic glass matrix compositesJun-wei Qiao1,2,Yong Zhang3,Hui-jun Yang1,2,Sheng-bo Sang41. Laboratory of Applied Physics and Mechanics of Advanced Materials, College of Materials Science and Engineering, Taiyuan University of Technology2. Key Laboratory of Interface Science and Engineering in Advanced Materials (Ministry of Education), Taiyuan......
and the particle size of hollow balls, the length of infiltration is getting longer. Besides, along with the increase of the particle size of the hollow ball, the void content decreases. Improving the filling and holding pressure, lengthening the holding time and adding metal Mg are the effective measures to improve infiltration process.Key words:counter-gravity infiltration casting; hollow ball; void......
J. Cent. South Univ. (2017) 24: 1406-1417 DOI: 10.1007/s11771-017-3545-2 Multi-optimization of a spherical mechanism for minimally invasive surgery NIU Guo-jun(牛国君), PAN Bo(潘博), ZHANG Fu-hai(张福海... spherical mechanism to realize RCM. In order to be compact, wire-driven mechanism is used, and heavy motors are mounted on the base platform. So, some decoupling mechanisms or decoupling algorithms......
; 文献标志码:A 文章编号:1672-7207(2010)06-2344-06 Design of holes arrangement and grouting pressure for void road panel ZHAO Jian1, 2, ZOU... of Science & Technology, Changsha 410076, China) Abstract: In order to analyze the design of holes arrangement and its grouting pressure of void treatment beneath cement concrete pavement, based......
of compaction degree of the solid-phase and void ration of soil is improved. Four kinds of fine-grained soils from different regions in China were selected, and the adsorbed water content and density... the improved void ratio of soil as the parameter. Key words: adsorbed water; volumetric flask method; thermogravimetric analysis method; void ratio; settlement Cite this article as: ZHANG Rui, XIAO Yu-peng, WU......
at room temperature. However, the high temperature tensile strength was increased. The creep strength was improved by the addition of Ca and Sr. Key words: magnesium alloys; Ca; Sr; void initiation... images of alloys during creep test at 200 ℃, 70 MPa and 48 h: (a) AT42; (b) ATX421; (c) ATJ421 Fig.8 Void initiation of AT42 system alloys during creep test at 150 ℃, 50 MPa: (a) Non-etched AT42; (b......
Trans. Nonferrous Met. Soc. China 24(2014) 1874-1879 Modeling GPS multipath effect based on spherical cap harmonic analysis Jin-yun GUO1,2, Guo-wei LI1,2, Qiao-li KONG1,2, Shu-yang WANG1,2 1. College... station were calculated, and firstly modeled based on the spherical cap harmonic (SCH), which is the function of satellite longitude and latitude with the robust method. The accuracy of the kinematic......
Plasma preparation and low-temperature sintering of spherical TiC –Fe composite powderJian-jun Wang1,2,Jun-jie Hao1,Zhi-meng Guo1,Song Wang11. Institute for Advanced Materials and Technology, University of Science and Technology Beijing2. Research and Development Center, CSR Qingdao Sifang Co., Ltd.摘 要:A spherical Fe matrix composite powder containing......
