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Nonlinear Theory on Dynamic Controlling Interface Patterns DuringSolidification of a Dilute Binary AlloyZidong Wang; Hanqi Hu(Material Science and Engineering School, University; of Science and Technology Beijing, Beijing 100083, China)摘 要:Nomenclaturea,bfcorrectnessfactors;aL,Qs’thermaldiffusivitiesofliquidandsolid,respectively,C:concentrationofsolute......
A New Contribution to the Theory of Anode Effect in Aluminium Electrolysis邱竹贤摘 要:<正> This paper discusses the general characteristicsof anode effect in aluminium electrolysis and pre-vious theories about the mechanism of anode effect.On the basis of laboratory experiments,the authorsuggests a new contribution to the primary and di-rect reason......
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CRSG: a congestion control routing algorithm for security defense based on social psychology and game theory in DTNWANG Cheng-jun(王珵珺)1, GONG Zheng-hu(龚正虎)1, TAO Yong(陶勇)2, ZHANG Zi-wen(张子文)1, ZHAO... and cooperation in delay/disruption tolerant networks (DTN). In particular, the existence of malicious node aggravates this contradiction. To resolve this contradiction, social relationship theory and group......
in the T-shape laser welding joint was inspected by ultrasonic testing system adopting independent component analysis(ICA) theory to process the signals.The principle of automatic ultrasonic testing......
能够显著提高其热稳定性,三元Al-Er-Zr合金中过时效现象显著滞后于Al-Er二元合金.在三元合金Al-Er-Zr中,随着Zr含量的增加,合金在长时间时效后,由于Er,Zr的协同析出而出现第二个更高的时效峰值,约为53.5HV,明显高于Al-Er二元合金的硬度.Al3(Er1-xZrx)粒子在高温粗化过程中逐渐长大,其平均直径d与退火时间t的关系符合LSW理论中的关系式.关键词:Al-Er-Zr...) precipitate coarsens gradually at higher temperature. The average precipitation diameter (d) increases with aging time t as a function shown in LSW theory.Key words:Al-Er-Zr alloys; aging; precipitation......
THEORY DEPOSITION MODEL AND INFLUENCING FACTORS DURING PROCESS OF PREPARING MICRO-LAYER LAMINATE BY EBPVD Y.Li1,L.P.Shi1,X.D.He1 (1.Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China) Abstract:This paper briefly introduces the characteristics of electron beam physical vapor deposition (EBPVD) technique and the whole process of preparing micro-layer composite......
Theory and practice of the optimizing of charging structure in EAF steelmakingYu Chen, Shiqi Li, Shujuan Ji, and Runzao Liu Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083. China摘 要:<正>The viewpoint about harmful residual element control, the charging structure and its influence......
THE CURING THEORY OF SILlCONE PAINT AND THE STRUCTURE OF COATING FILM王幼平,隋庆海,孙复强摘 要:<正> This paper puts forward the two methods ofweightlessness and alkoxyl group contentdetermination to calculate the amount of cross-linking agent after elaborating the curing essence ofsilicone paint under the action of catalysis,andprovides the theoretical basis......
用于描述奥氏体/马氏体界面的修正模型程宁1,郭正洪1,孟庆平1(1.上海市上海交通大学材料科学与工程学院)摘 要:在择优态存在的前提下,以修正Landau多项式描述奥氏体/马氏体的界面特征.以母相弹性模量,择优态能量和马氏体相变驱动力为参数,利用Ginzburg-Landau理论计算了奥氏体/马氏体的界面结构及相关性质.结果表明,奥氏体/马氏体界面存在一个序参量变化缓慢的平台,这个平台对应于点阵结构既非奥氏体也非马氏体的过渡区域.通过对奥氏体/马氏体界面宽度和界面能的计算,表明本模型可很好地解释一些实验中观察到......