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, increases 77% compared with as cast, while tensile strength decreases, Si crystal grows up with both the extrusion temperature and the Si content increasing. Key words: rapid solidification; vacuum canning; hot extrusion; Al-Si alloy 高硅铝合金作为电子封装材料, 其质量仅为传统金属基W-Cu电子封装材料的六分之一, 且高硅铝合金具有很好的热导性能, 线膨胀系数可控[1], 能与电路板广泛使用的半导体材料相匹配, 因此, 作为基片衬底, 机壳及盖板等材料可保证电子器件在使用过程中不致受热或开裂而过早失效. 高硅铝合金电子封装材料, 代表了新型轻质封装材料的发展方向......
Abstract: The extrusion of Al-Si alloy powders with different particle sizes allows manufacture of different products with unique microstructures and therefore with unique mechanical properties... range of microstructures, varying within the powder particles, has been noted. The extrusion of Al-Si alloy powders with different sizes allows manufacture of different products with unique......
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. After compacting, the green compact was sintered in vacuum at 610 °C for 2 h to obtain an Al alloy ingot with a diameter of 650 mm and a length of 1700 mm as seen in Figure 2. Hot extrusion... of an ultrahigh strength Al-Zn-Mg-Cu-Zr-Sc (7055) alloy processed by modified powder hot extrusion with post aging [J]. Vacuum, 2019, 161: 434-442. DOI: 10.1016/j.vacuum.2019.01.013. [29] BALOG M, OROVCIK......
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treatment can significantly enhance the cold compactibility of gas-atomized Al-Si alloy powders. Key words: Al-Si alloy; compactibility; rapid solidification; annealing; microstructure 1 Introduction...Trans. Nonferrous Met. Soc. China 26(2016) 2355-2362 Effect of pre-annealing on microstructure and compactibility of gas-atomized Al-Si alloy powders Zhi-yong CAI1,2, Chun ZHANG1,2, Ri-chu WANG2......
Journal of Nonferrous Metals, 2000, 10(S1): 126-131. [11] SHEN Jun, ZHUANG De-xie, YU Lai-gao. Microstructure characteristics of a hypereutectic Al-Si alloy manufactured by rapid solidification/powder... with vacuum canning hot-extrusion process to fabricate SiO2 and Al2O3 dispersion strengthening composites. Powder particle size analyzer, oxygen content analyzer, optical microscope and scanning electron......
h by hot extrusion resulted in a good combination of tensile strength and elongation of 256.3 MPa and 15%, respectively. LIANG et al [21] studied the Si and Al3FeSi particles in Al-7Si-0.3Mg alloy... remarkably refined, and the Al3Yb intermetallic compound has also been obtained. The Si, β-Al5FeSi, and rare earth phases are further refined in the alloy at 0.9 wt% Yb and hot extrusion. The results......
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