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: (a) Al-Si alloy matrix; (b) Composite by adding AACH; (c) Composite by adding γ-Al2O3 A differential thermal analysis (DTA) was carried out to confirm the onset temperature of the reactions of AACH.... 4 Conclusions 1) An in situ γ-Al2O3 reinforced Al-Si alloy matrix composite was successfully fabricated by adding AACH, in which γ-Al2O3 particles distribute uniformly. 2) In the composites......
AN IN SITU SURFACE COMPOSITE AND GRADIENT MATERIALOF Al-Si ALLOY PRODUCED BY ELECTROMAGNETIC FORCE T.X.Li1,Z.L.Zhu1,Y.H.Zhou1,Z.M.Xu1 (1.School of Materials Science and Engineering, Shanghai Jiao... 40μm to 100μm. The wear resistance of Al-Si alloy gradient material can be more greatly increased than that of their matrix material.`` Key words:Al-Si alloy; electromagnetic force; in situ surface......
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alloy is concerned, counterbalancing effects of the Si particles, namely higher erosion and corrosion resistance leading to improved wear resistance and Si/Al-matrix interfacial attack of the medium... heat treatment changed the morphology of the Si particles to spheroidal and also improved the homogeneity of their distribution in the Al matrix. 2) The as-cast Al-Si alloy exhibited higher hardness......
diffraction(XRD). The results show that as the mass fractions of Si and Cu increase, the conductivities of Al-Si alloys decrease, and the lattice disorder levels of the matrix increase. The effect of Cu on the conductivity of Al-Si alloys is much more significant than that of Si. After being heat treated (450 ℃×5 h+250 ℃×2 h), the lattice distortion levels of the Al matrix decrease significantly......
Microstructure and performance of Al-Si alloy with high Si content by high temperature diffusion treatment XIU Zi-yang (修子扬), CHEN Guo-qin(陈国钦), WANG Xiao-feng(王晓峰), WU Gao-hui(武高辉), LIU Yan-mei..., which improves the mechanical performance of Al-Si alloy. The bending strength of 3D-Al-Si alloy increases by 6% compared with that of Al-Si alloy, but the elastic modulus changes a little......
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-xiang, HAN Fu-yin. Effect of composite modifier on structures and properties of hypereutectic Al-Si alloy [J]. The Chinese Journal of Nonferrous Metals, 2002, 12(S1): 107-110.(in Chinese) [7]QUAN Yan...Article ID: 1003-6326(2005)05-1089-07 Effects of high magnetic field on modification of Al-Si alloy LIAN Feng(连 峰)1, 2, QI Feng(齐 峰)1, LI Ting-ju(李廷举)1, HU Guo-bing(胡国兵)1 (1......
]. In terms of microstructure and performance, hypereutectic Al-Si alloy is generally regarded as an in-situ natural Al matrix composite, in which Si phases act as reinforcement [20,21]. According... alloy powders was investigated. Microstructure and hardness of the annealed powders were characterized. Pre-annealing results in decreasing Al matrix hardness, dissolving of needle-like eutectic Si......
of the refined Si phases and the supersaturated Al matrix. The effect of annealing on improving the compactibility of Al-Si alloy powder was studied. The densification was investigated by the HECKEL... matrix, precipitation of supersaturated Si phases, dissolution of needle-like eutectic phase, and spheroidization of Si phases. Key words: powder compaction; gas atomization; Al-Si alloy; annealing......