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Damage analysis for particle reinforced metal matrix composite by ultrasonic method YANG Zhi-guo(杨治国), LONG Shi-guo(龙士国) Key Laboratory for Advanced Materials and Rheological Properties... of particle reinforced metal matrix composite (PMMC) was studied by ultrasonic non-destructive evaluation method. After the sample was damaged induced by tensile load, the ultrasonic wave that propagated......
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Promotion Effect of Lantanum ions on Co/SiO2 Catalysts Prepared via Solvated Metal Atom Impregnation Method 张守民1,吴世华1,黄维平1,石娟1,李保庆1 (1.Department of Chemistry, NanKai University, Tianjin 300071, China) Abstract:In order to assess the promotional effects of La3+ on CO hydrogenation of Co/SiO2 catalyst, solvated metal atom impregnation (SMAI) method was used to prepare unpromoted 10% (mass......
Micro-yield behaviors of Al2O3-SiO2(sf)/Al-Si metal matrix composites LIU Guan-jun(刘贯军)1,2, LI Wen-fang(李文芳)1, PENG Ji-hua(彭继华)1, DU Jun(杜 军)1 1. School of Mechanical Engineering, South China...: Effects of the volume fraction and the size of crystallized alumina silicate short fibers as well as heat treatment processes on micro-yield strength(MYS) of Al2O3-SiO2(sf)/Al-Si metal matrix composite......
Application of direct laser metal tooling for AISI H13 tool steel Hee-Jin JEONG1, Yoong-Ho JUNG2, Deug-Woo LEE3 1. Gyeongbuk Hybrid Technology Institute, Gyeongbuk, 770-170, Korea; 2. School of Mechanical Engineering, Pusan National University, Busan, 609-735, Korea; 3. Department of Nanosystem and Nanoprocess Engineering, Pusan National University, Busan, 609-735, Korea Received 2 March......
Selective removal of heavy metal ions from aqueous solutions with surface functionalized silica nanoparticles by different functional groupsKONG Xiang-feng(孔祥峰)1, 2, 3, YANG Bin(杨斌)1, 3, XIONG Heng(熊...),Kunming 650093, China;2. School of Metallurgy and Environment, Central South University, Changsha 410083, China;3. State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, Kunming......
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MODELING OF AUSTENITE GRAIN SIZE IN LOW-ALLOY STEEL WELD METAL Y.S.Wang1,A.G.Huang1,Z.Y.LI1,Q.Hu1,J.G.Xiong1 (1.School of Materials Science & Engineering,Huazhong University of Science... to determine the size of austenite grain in the weld metal.In this paper,a model based upon the carbon diffusion rate is developed for computing austenite grain size in low-alloy steel weld metal during......
Dynamic Electronic Structure in Transition Metal Oxides Jiangong Li1,Haiying He1 (1.Department of Materials Science, Lanzhou University, Lanzhou 730000) 摘要:The isomer shift of La1-xCaxFeO3 decreases gradually from the value for trivalent iron to that for tetravalent iron, as the Ca content x increases from 0 to 1. This indicates that iron in La1.x-CaxFeO3 has an intermediate valence state......
Formation and evolution properties of clusters in liquid metal copper during rapid cooling processes YI Xue-hua(易学华)1, 2, LIU Rang-su(刘让苏)1, TIAN Ze-an(田泽安)1, HOU Zhao-yang(侯兆阳)1, LI Xiao-yang(李晓... that the glass transition temperature Tg for liquid metal Cu is about 673 K at the cooling rate of 1.0×1014 K/s. Key words: liquid metal Cu; microstructure transition; nano-cluster; molecular dynamics......
