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Microstructure of partially remelted billet of AM60 alloy prepared with self-inoculation method

ISSN号：1003-6326
期刊名称：《中国有色金属学报：英文版》
时间：0
分类：TG249.9[金属学及工艺—铸造] TG292[金属学及工艺—铸造]
作者机构：[1]Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China, [2]Key Laboratory of Nonferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China
相关基金：Project（2007CB613700） supported by the National Basic Research Program of China; Project（50964010） supported by the National Natural Science Foundation of China; Project（090WCGA894） supported by the International S＆T Cooperation Program of Gansu Province, China

作者：邢博[1], 李元东[1,2], 马颖[1,2], 陈体军[1,2], 郝远[1]

关键词：半固态坯料, 部分重熔, 微观组织, 制备, 合金, 接种法, 优化工艺条件, 接种方法, AM60 Alloy, self-inoculation method, semisolid process, partial remelting, process parameters

中文摘要：

AM60 合金的营舍，与自我接种准备了方法，部分是进半固体状态的 remelted。半固体营舍的 remelting 微观结构上的过程参数的效果被调查。试验性的结果证明与自我接种方法获得的稳固的粒子在部分 remelting 以后在更小的谷物尺寸和球状的形状，与与另外的扔的方法准备的那些相比。处于优化过程条件，稳固的粒子的平均尺寸部分 remelted 营舍是 65 m，并且形状因素是 1.12。进程参数，即流的温度，自我种体的增加数量，和混合冷却隧道的多溪流的斜坡角度在微观结构上有影响部分 remelted 营舍。优化温度从 680 ????? 桲潥搭敩慣瑳湩吗？？

英文摘要：

The billets of AM60 alloy, prepared with self-inoculation method, were partially remelted into semisolid state. Effects of process parameters on remelting microstructure of semisolid billet were investigated. Experimental results show that the solid particles obtained with self-inoculation method are in smaller grain size and globular shape after partial remelting, compared with those prepared with other casting methods. In the optimized process conditions, the average size of solid particles of partially remelted billet is 65 μm, and the shape factor is 1.12. The process parameters, i.e. pouting temperature, addition amount of self-inoculants, and the slope angle of multi-stream mixing cooling chalmel have influence on the microstructure of partially remelted billet. The optimized temperature is from 680 ℃ to 700 ℃, addition amount of self-inoculants is between 5% and 7% （mass fraction）, slope angle of multi-stream mixing cooling channel is between 30° and 45°, with which the dendritic microstructure of as-cast billet can be avoided, and the size of solid particles ofremelted billet is reduced.

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