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University, Changsha 410083, China) Abstract: Based on the analyses of aluminum melt flow, solidification, heat transfer during the process of twin-roll casting, a coupling mathematical model of aluminum... of aluminum melt in casting zone, the temperature field and thermal stress field of roller shells were simulated by the coupling model. When the casting velocity is 7m/min, and the thickness of strip......
min to ensure that the elements Y and Ca can dissolve completely. Subsequently, the melt was poured into a BUHLER 530 t cold chamber die casting machine. The die cast specimens with a gauge length... Effects of combined addition of Y and Ca on microstructure and mechanical properties of die casting AZ91 alloy WANG Feng(王 峰), WANG Yue(王 越), MAO Ping-li(毛萍丽), YU Bao-yi(于宝义), GUO Quan......
coating and successive SiC matrix were respectively prepared by chemical vapor infiltration (CVI) in T700 kind integer felt. The subsequent reactive melt infiltration (RMI) method was adopted... and SiC, which is beneficial to the pulling out of C fibers. Key words: C/SiC composite materials; microstructure; chemical vapor infiltration; reactive melt infiltration; flexural properties  ......
Feasibility of semi-solid die casting of ADC12 aluminum alloy S. JANUDOM1, T. RATTANOCHAIKUL1, R. BURAPA2, S. WISUTMETHANGOON3, J. WANNASIN1 1. Department of Mining and Materials Engineering... June 2010 Abstract: The feasibility of semi-solid die casting of ADC12 aluminum alloy was studied. The effects of plunger speed, gate thickness, and solid fraction of the slurry on the defects were......
as pore-forming materials through the counter-gravity infiltration casting system. The results show that along with the increase of the metal temperature and hollow balls preheating temperature... 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......
that TiO2 in the melt acts as a trigger for zirconolite formation. This phase could be detrimental for CMAS/volcanic ash infiltration resistance since it can be formed alongside with apatite which...Effects of yttria content on the CMAS infiltration resistance of yttria stabilized thermal barrier coatings systemJuan J.Gomez Chavez1,Ravisankar Naraparaju2,Peter Mechnich2,Klemens Kelm2,Uwe......
/BMG composites [J]. Science in China Series G, 2009, 52(10): 1632-1636. [5] QIU K Q, REN Y L. Melt infiltration casting of Zr57Al10Nb5Cu15.4Ni12.6 amorphous matrix composite [J]. J Miner Mater Character Eng, 2004, 3: 91-98. [6] DANDLIKER R B, CONNER R D, JOHNSON W L. Melt infiltration casting of bulk metallic-glass matrix composites [J]. J Mater Res, 1998, 13: 2896-2901. [7] YIM H C, CONNER R D......
Article ID: 1003-6326(2005)02-0371-04 Infiltration kinetics of pressureless infiltration in SiCp/Al composites QIN Zhen-kai(秦振凯), YU Jia-kang(于家康), ZHANG Xiao-yu(张小宇) ( State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi′an 710072, China) Abstract: The pressureless infiltration kinetics was investigated by plotting the infiltration distance......
different role in the heat transfer during mould filling and solidification periods: it significantly increases the cooling rate of the filling melt, but decreases the cooling rate of the casting... mold filling had finished. The temperature gradient indicates directional solidification in the casting, solidification will start from the end of the casting to sprue as the melt cools down......
Eutectic Solidification in Near-eutectic Al-Si Casting AlloysH.C.Liao,M.Zhang,J.J.Bi,K.Ding,X.Xi and S.Q.Wu School of Materials Science and Engineering,Southeast University;Jiangsu Key Laboratory for Advanced Metallic Materials,Nanjing 211198,China摘 要:Eutectic solidification in near-eutectic Al-13 wt pct Si casting alloys and the effect of trace......