【作者】 秦克； 崔建忠； 任栖锋；

【Author】 Qin ke ,Cui Jianzhong ,Ren XifengThe Key Laboratory of Electromagnetic Processing of Materials, Minister of Education, China

【机构】 东北大学材料电磁过程研究教育部重点实验室；

【摘要】 采用液相线半连续铸造技术制备Al-8.8Zn-2.8Mg-2.5Cu铝合金半固态浆料,研究了不同铸造温度、保温时间对铸锭微观组织的影响。在液相线附近,晶粒尺寸随着浇铸温度的降低而逐渐减小并呈球化的趋势。在同一温度下,保温时间的延长有利于晶粒的球化,且分布趋于均匀。结果表明,液相线半连续铸造可以获得理想的高强高韧铝合金半固态浆料。更多还原

【Abstract】 Producing Al-8.8Zn-2.8Mg-2.5Cu semi-solid slurry by nearby-liquidus semi-continuous casting technology. The influence of casting temperature and heat preservation time on liquidus casting microstructure was investigated. In the liquidus nearby , the grains size becomes coarse with increasing of casting temperature. With the heat preservation time prolonging, the grain size becomes coarse and circled. The results show that fine semi-solid slurries of Super-high Strength and Toughness Al-AIloy can be obtained by means of nearby-liquidus casting.更多还原