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Nucleation mechanism of a nickel-base superalloy during dynamic recrystallizationShuai WANG 1) , Lei WANG 1) , Yang LIU 1) , Guohua XU 2) , Beijiang ZHANG 2) and Guangpu ZHAO 2) 1) Key Laboratory...摘 要:Hot compression test was carried out at 1000℃ to investigate the dynamic recrystallization nucleation mechanism of a nickel-base superalloy......
THERMODYNAMIC PARAMETERS IN THE NUCLEATION OF LIQUID IRON Q.Lin1,P.Zhao2,J.H.Mao1,B.Song1,C.Huang1 (1.University of Science and Technology Beijing, Beijing 100083, China;2.Central Iron and Steel... to measure the undercooling of liquid iron during solidification. The relations between the cleanness of liquid iron and undercooling, thermodynamic driving force of nucleation, the nucleus forming energy......
Microstructure,crystallography and nucleation mechanism of NANOBAIN steelYao Huang1,Ai-min Zhao1,Jian-guo He1,Xiao-pei Wang1,Zhi-gang Wang1,2,Liang Qi1,21. Metallurgy Engineering Research Institute... indicates that nucleation in NANOBAIN steel is the shear mechanism.Finally,the formation of carbon poor regions is thermodynamically possible,and the existence of carbon poor regions can greatly increase......
Heterogeneous Acid Catalytic Esterification by Porous Polyoxometalate-tantalum Pentoxide Nanocomposites许蕾蕾1,GUOYihang2,MA Huiru1,官建国11. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology2. School of Chemistry, Northeast Normal University摘 要:Polyoxometalates (POMs) are useful catalysts......
; 文献标识码:A 文章编号:1672-7207(2008)01-0007-05 Preparation of Fe-coated Si3N4 composite powder by heterogeneous precipitation... composite powder was synthesized by the heterogeneous precipitation-thermal reduction process. SEM of Fe/Si3N4 composite powder and Si3N4 without conductive coating were compared, and the structures......
the cooling rate is high. 关键词:nucleation & growth; casting; directional solidification; [全文内容正在添加中] ......
阳离子红溶液降解40 min,去除率达98.0%,CODCr去除率为89.7%,COD和阳离子红的去除符合一级反应动力学.间接氧化,直接氧化和活性组分V多相催化氧化的共同作用强化了该体系阳离子红和COD的去除效果.关键词:多相催化;电化学;染料废水Cationic red GTL dye wastewater treatment using new electro-heterogeneous..., Xiamen 361021, China)Abstract:Electro-heterogeneous catalytic system was constructed using activated carbon as electric particle, modified electrode as working electrode, and Al2O3 loaded metallic oxide......
Study on Heterogeneous Nuclei in Cast H13 Steel Modified by Rare Earth 丁文江1,兰杰1,贺俊杰1,朱燕萍1,王渠东1 (1.School of Materials Science Engineering, Shanghai Jiao Tong University,) Abstract:The dendrite... calculation, analysis of two-dimensional lattice misfitting and electron probe analysis, it is found that Ce2O3 may act as the heterogeneous nuclei of modified cast H13 steel. [全文内容正在添加中] ......
versus displacement responses of the indenter were presented. It is shown that the abrupt drop of the load in the load-displacement response is triggered by the nucleation of dislocations in the metals... Shockley partial dislocations after the first nucleation process. The distances between the two partial dislocations are equal for both sides of the indenter, which are in agreement......
Nucleation and Formation of Stable and Metastable Phases in Undercooled AI-Li MeltsShenglong DAI Guifu YU Minggao YAN Institute of Aeronautical Materials,Beijing,100095,China摘 要:<正> A modified nucleation and competitive growth kinetic theory considering unsteady nucleation andeffect of composition in dilute binary alloys was suggested,based......