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电解低钛铝制备Al-9%Si合金的晶粒细化

Grain Refinement of Al-9%Si Alloy Prepared with Electrolytic Low-titanium Aluminum

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【作者】 孟祥永王明星刘志勇刘忠侠翁永刚宋天福杨升

【Author】 MENG Xiang-yong,WANG Ming-xing,LIU Zhi-yong,LIU Zhong-xia, WENG Yong-gang,SONG Tian-fu,YANG Sheng(Department of Physics and Key Laboratory of Materials Physics of the Ministry of Education of China,Zhengzhou University,Zhengzhou 450052,Henan,China)

【机构】 郑州大学物理工程学院教育部材料物理重点实验室郑州大学物理工程学院教育部材料物理重点实验室 河南郑州450052河南郑州450052

【摘要】 分别以纯铝和电解低钛铝为母材制备Al-9%Si合金,对Al-5%Ti、Al-5%Ti-1%B和Al-4%B中间合金对纯铝制备合金的晶粒细化效果与Al-4%B对电解低钛铝制备合金的晶粒细化效果进行了对比试验研究。结果表明:Al-5%Ti-1%B中间合金的细化效果明显优于Al-5%Ti中间合金,向电解低钛铝制备的Al-9%Si合金中按51∶钛硼质量比添加Al-4%B中间合金,可获得比Al-5%Ti-1%B中间合金更好的细化效果;在硼添加量较低时,细化效果也优于Al-4%B细化纯铝制备合金。对试验结果进行了讨论,对铝硅合金的细化机理进行了分析。

【Abstract】 The grain refining effects of Al-5%Ti,Al-5%Ti-1%B and Al-4%B master alloy in Al-9%Si alloys,which were prepared with pure aluminum and with electrolytic low-titanium aluminum respectively,were investigated.The results show that the grain refining effect of Al-5%Ti-1%B master alloy is obviously superior to that of Al-5%Ti master alloy.When Al-4%B master alloy is added to the melt of Al-9%Si alloy prepared with electrolytic low-titanium aluminum at the Ti/B mass ratio of 5∶1,the grain refining effect was even better than that of Al-5%Ti-1%B master alloy.In addition,when the addition level of boron is lower,the grain refining effect of Al-4B master alloy in Al-9%Si alloy prepared with electrolytic low-titanium aluminum is also superior to that of Al-4%B master alloy refining Al-9%Si alloy prepared with pure aluminum.The experimental results are analyzed and the grain refinement mechanisms of Al-Si alloy are also discussed in this article.

【基金】 河南省重大科技攻关资助项目(0322020600)。
  • 【分类号】TG27
  • 【被引频次】3
  • 【下载频次】112
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