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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of the salt addition practice on the grain refining efficiency of Al-Ti-B master alloys
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Effect of the salt addition practice on the grain refining efficiency of Al-Ti-B master alloys

机译：加盐方式对Al-Ti-B中间合金晶粒细化效率的影响

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摘要

The impact of the salt addition practice on the microstructure and grain refining efficiency of Al-Ti-B alloys produced by the "halide salt" route was investigated. The grain refining performance of an experimental Al-5Ti-1B master alloy was optimized when the halide salts were pre-mixed before addition to aluminium melt at 800 deg C during the production of the grain refiner. The stirring action provided during salt addition was found to degrade, while a high rate of addition was found to improve, the grain refining efficiency. In view of the above, an improved salt addition practice to ensure an exceptional grain refining performance is claimed to comprise the following steps: melting commercial purity aluminium ingot; addition of pre-mixed salts to molten aluminium at 800 deg C, at once to facilitate a rapid salt reaction, gently mixing the salts with the aluminium melt without introducing any stirring. The grain refiner master alloy thus produced gives an average grain size of 102 mu m 2 min after inoculation.
机译：研究了添加盐对“卤化物盐”法生产的Al-Ti-B合金的组织和晶粒细化效率的影响。当在制造晶粒细化剂的过程中将卤化物盐预混合后再添加到800摄氏度的铝熔体中时，可以优化实验Al-5Ti-1B中间合金的晶粒细化性能。发现在添加盐期间提供的搅拌作用降低，而发现提高的添加速率改善了晶粒细化效率。鉴于上述，要求确保一种优异的晶粒细化性能的改进的盐添加方法包括以下步骤：熔化商业纯度的铝锭;在800摄氏度下立即将预混合的盐添加到熔融铝中以促进快速的盐反应，在不引入任何搅拌的情况下将盐与铝熔体轻轻混合。这样生产的晶粒细化剂母合金在接种后得到的平均晶粒尺寸为102μm2分钟。

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