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NUMERICAL SIMULATION OF EXTRUSION OF COMPOSITE POWDERS PREPARED BY HIGH ENERGY MILLING Q.L.Zhu1,W.Xia1,Y.Y.Li1,X.Q.Li1,E.D.Wang2,W.P.Chen1 (1.College of Mechanical Engineering, South China... milling and the micromechanics of composite material, a plastic constitutive equation is implemented for milled composite powders. To check the equation, the extrusion of Ti/Al composite powders prepared......
Effect of ball milling time on microstructures and mechanical properties of mechanically-alloyed iron-based materials LIU Dong-hua(刘东华), LIU Yong(刘 咏), ZHAO Da-peng(赵大鹏), WANG Yan(王 岩... in the patterns suggests that both the grain size of the mixed powders and the change in lattice distortion are significantly affected by the mechanical milling. The structurally broadened profile is given......
composite was fabricated by mechanical milling and pulsed current activated sintering(PCAS). The microstructures of Ti35Nb2.5Sn/10HA powder particles and composites sintered from the milled powders were studied. Results indicated that α-Ti phase began to transform into β-Ti phase after the powders were mechanically milled for 8 h. After mechanical milling for 12 h, α-Ti completely transformed into β......
could be ensured completely on the condition of 40 h ball milling time. 3.3 Room temperature mechanical properties Fig.6 shows the relationship between the ball milling time and the ultimate... alloying and milling [J]. Progress in Materials Science, 2001, 46: 1-184. [8] LU Shi-qiang, HUANG Bai-yun,HE Yue-hui. Effect of mechanical alloying on synthesizing of Laves phase Cr2Nb by solid phase......
力学和动力学理论,求得晶界扩散激活能及稳定晶粒尺寸等参数,并分析讨论Fe-C纳米晶的晶粒稳定机制. 关键词:Fe-C合金；纳米晶；稳定性；机械球磨 中图分类号:TG111.5,TF123.21 文献标志码:A Preparation of Fe-1%C nanocrystalline by mechanical milling...: The particles of Fe-1%C (mole fraction) alloy with the single phase solid solution nanocrystalline were produced by mechanical milling. The influences of milling time on the particles morphologies......
Dry ball milling and wet ball milling for fabricating copper-yttria compositesFei Huang1,2,Hang Wang3,Jin-Shui Chen1,Bin Yang41. School of Materials Science and Engineering, Jiangxi University... prepared by dry ball milling (DBM) and wet ball milling(WBM), respectively, followed by spark plasma sintering(SPS). It is to determine which milling process is better for fabricating Cu-Y2O3 composites......
, high-energy ball milling technique, mechanical alloying has been adapted to produce a variety of commercially useful and scientifically interesting materials such as supersaturates solid solutions, crystalline and quasicrystalline intermediate phases and amorphous alloys[4-6]. Solid-liquid reaction milling technique based on mechanochemistry and mechanical alloying is a novel technology......
time, the intensity and the width of the peaks of MgH2 increase rapidly. The reason is that upon milling, repeated ball-powder collisions induce mechanical deformations, and introduce strain... storage properties of nanocomposite Mg-Ni-MnO2 made by mechanical milling [J]. Trans Nonferrous Met Soc China, 2002, 12(2): 227-232. (Edited by YANG Bing) ......
Synthesis of TiAl-Al2O3 composites byhigh energy milling and hot-press sintering ZHU Jian-feng(朱建锋)1, 2, GAO Ji-qiang(高积强)1, WANG Fen(王 芬)2 1. State Key Laboratory for Mechanical Behavior...) by mechanical alloying and in situ crystallization. The process of high energy milling of Al, Ti, and TiO2 blended powders was examined by analyzing the progress of mechanical alloying. The subsequent......
ofhigh energy ball milling. After consolidated the La doped WC/Co alloy by high energyball milling exhibits ultra-fine grain Sizes and better mechanical properties. Key words:cemented carbide; nano...PREPARING NANO-CRYSTALLINE La DOPED WC/Co POWDER BY HIGH ENERGY BALL MILLING D.Zou1,S.Liu2,Y.X.Li1,D.Q.Yi2 (1.Hunan Yin Zhou Nonferrous Metals Hi.-Tech. Limited Company, Changsha 410083, China......
