| 自孕育法制备AZ61镁合金的微观组织 |
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| 引用本文： | 武慧慧,李元东,马颖,李春,李艳磊.自孕育法制备AZ61镁合金的微观组织[J].铸造,2011,60(9). |
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| 作者姓名： | 武慧慧 李元东 马颖 李春 李艳磊 |
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| 作者单位： | 1. 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州,730050
2. 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050;兰州理工大学有色金属合金及加工教育部重点实验室,甘肃兰州730050 |
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| 基金项目： | 国家自然科学基金项目(50964010); 甘肃省国际科技合作计划项目(090WCGA894) |
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| 摘 要： | 采用AZ91D镁合金母液与纯Mg熔体混合的自孕育法制备AZ61镁合金半固态坯料,研究了液-液熔体混合和导流.器角度改变对AZ61镁合金组织的影响.试验结果表明:液-液混合熔体经导流器浇注到铸型中后,可以使AZ61镁合金组织明显细化.相比未混合制备的AZ61,熔体混合有利于能量起伏、结构起伏、浓度起伏,增加有效形核,使晶粒细化；经倾斜导流器激冷、冲刷进一步细化晶粒,同时熔体流经导流器产生的二次混合又促进了有效形核,使平均晶粒尺寸大幅减小(约50％).随导流器角度增加,组织有粗化的趋势,但影响不大.
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| 关 键 词： | 自孕育法 AZ61镁合金 熔体混合 导流器 |
Microstructure of AZ61 Magnesium Alloy by Self-Inoculation Method |
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| WU Hui-hui,LI Yuan-dong,MA Ying,LI Chun,LI Yan-lei.Microstructure of AZ61 Magnesium Alloy by Self-Inoculation Method[J].Foundry,2011,60(9). |
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| Authors: | WU Hui-hui LI Yuan-dong MA Ying LI Chun LI Yan-lei |
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| Affiliation: | WU Hui-hui1,LI Yuan-dong1,2,MA Ying1,LI Chun1,LI Yan-lei1(1.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,Gansu,China,2.Key Laboratory of Non-Ferrous Metal Alloys and Processing,Ministry of Education,China) |
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| Abstract: | The semi-solid slurry of AZ61 alloy was prepared by the self-inoculation method of AZ91D melt mixed with pure Mg liquid.Effect of the self-inoculation and the different cooling channel angles on grain refinement were investigated.The results indicate that the grain is significantly refined by self-inoculation method in which the two melts are mixed and poured into a mould through a special tilt cooling channel.Compared with AZ61 without self-inoculation,the self-inoculation method is favorable for energy fl... |
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| Keywords: | self-inoculation AZ61 magnesium alloy melt mixing special cooling channel |
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