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Microstructure and nanohardness of Ti-48%Al alloy prepared by rapid solidification under different cooling ratesWANG Hong-wei1, 2, ZHU Dong-dong1, ZOU Chun-ming1, WEI Zun-jie1(1. School of Materials... inversely with the wheel speed. The nanohardness increases with increasing cooling rate due to the grain size strength.Key words:rapid solidification; microstructure; cooling rate; TiAl intermetallics......
Effect of extrusion ratio on microstructure and mechanical properties of AZ91D magnesium alloy recycled from scraps by hot extrusion HU Mao-liang(胡茂良), JI Ze-sheng(吉泽升), CHEN Xiao-yu(陈晓瑜... magnesium alloy scraps directly by hot extrusion was studied. Various microstructural analyses were performed using the techniques of optical microscopy, scanning electron microscopy (SEM) and energy......
值小于混合后目标合金在液相线的吉布斯自由能(=-39.336 6 kJ)时,初生硅才能得到明显的细化. 关键词:过共晶Al-Si合金;液-液混合;受控扩散凝固(CDS);初生硅相;热力学 中图分类号:TG249;TG146.2 文献标志码:A Hypereutectic Al-Si alloy prepared by controlled...: The hypereutectic Al-20%Si alloy was fabricated by liquid-liquid mixing of controlled diffusion solidification (CDS), and the effect of temperature of high silicon alloy on the microstructure of primary......
; 雾化液滴; 微观组织演变; 模拟; 群体动力学 中图分类号: TG244; TB115 文献标识码: A Microstructure evolution of hypereutectic Al-Si alloy during rapid solidification LIANG Hong-yu1, 2, MAO Xie-min1, HU Zhi-heng1 (1. School... of hypereutectic Al-Si alloy during rapid solidification, and was solved for A390 alloy. The results show that, with the droplet size decreasing, the average quenching velocity increases and the growth time......
distributes uniformly in the matrix. Key words: hypereutectic Al-Si alloy; controlled diffusion solidification; primary silicon 目前,石油资源短缺,环境污染严重,汽车使用量却越来越大,所以,提高内燃机效率,最大程度减少燃油损耗和减少尾气排放成为人们日益关注的问题.提高内燃机的效... mixing casting of Al-Si alloy[J]. The Chinese Journal of Nonferrous Metals, 2000, 10(3): 349-352. [26] LANGFORD G, ROBERT E C. Steel casting by diffusion solidification[J]. Metallurgical Transactions......
extrusion of rapidly solidified Al-Si alloy powder by the rotation-water-atomization process [J]. Transactions of the Japan Institute of Metals, 1986, 27(3): 195-203. [9] LI Shu-suo, ZHAO Ai-min, MAO Wei... and the elongation is improved from 0.35% to 0.48%. Key words: hypereutectic Al-Si alloy; complex modification; microstructure; mechanical properties  ......
the columnar dendritic growth in a flowing melt and solidification grain structure formation in centrifugal casting of Al-Si alloy[16]. Gandin et al[17] have developed a three-dimensional CA model...Article ID: 1003-6326(2005)02-0291-05 Modeling of solidification grain structure for Ti-45%Al alloy ingot by cellular automaton WU Shi-ping(吴士平), LIU Dong-rong(刘东戎), GUO Jing-jie(郭景杰), FU......
measurement of the metastable liquid miscibility gap in Fe-Co-Cu ternary alloy system [J]. Chin Phys Lett, 2005, 22: 482-484. [15] CAO C D, HERLACH D M, KOLBE M, GORLER G P, WEI B. Rapid solidification... November 2005; accepted 2 May 2006 Abstract:The ribbons of Cu-Cr alloys with high Cr content (15%-35%, mass fraction) were prepared by rapid solidification. The microstructures of solidified samples......
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. The reduction leads to the improvement of the corrosion resistance after extrusion which is then comparable with the commercial alloy AZ91D. Key words: magnesium-tin alloys; microstructure; corrosion... in as-cast condition and after extrusion are presented in Figs.1-3 in the same magnification. It can be clearly seen that after extrusion in the binary T3 alloy newly recrystallized fine grains have......