| 引用本文: | 侯运丰,夏天东,赵文军.Al含量对热爆合成Al-Ti-C组织及细化性能的影响[J].材料科学与工艺,2010,18(6):819-823.DOI:10.11951/j.issn.1005-0299.20100617. |
| HOU Yun-feng,XIA Tian-dong,ZHAO Wen-jun.Effect of Al content on microstructures and refining performances of Al-Ti-C master alloys prepared by thermal explosion synthesis[J].Materials Science and Technology,2010,18(6):819-823.DOI:10.11951/j.issn.1005-0299.20100617. |
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| 摘要: |
| 为改善Al-Ti-C中间合金的晶粒细化性能,采用铝液中热爆合成法制备出用于铝及铝合金晶粒细化的Al-Ti-C中间合金.通过DTA、XRD和SEM等手段分析了Al含量对热爆反应过程及合成产物组织形态的影响,并比较了Al-Ti-C中间合金对工业纯铝的细化效果.结果表明,铝液中热爆合成的Al-Ti-C中间合金由Al、Al3Ti、TiC三相组成,Al含量对反应体系的合成温度、反应速度及合成产物组织产生重要影响.调整原料Al含量可有效控制中间合金中第二相粒子组织形态,获得良好的晶粒细化性能. |
| 关键词: Al含量 热爆反应 Al-Ti-C中间合金 晶粒细化 金属材料 |
| DOI：10.11951/j.issn.1005-0299.20100617 |
| 分类号:TG146.21 |
| 基金项目:兰州理工大学博士基金资助项目(BS02200904) |
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| Effect of Al content on microstructures and refining performances of Al-Ti-C master alloys prepared by thermal explosion synthesis |
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HOU Yun-feng1, XIA Tian-dong2, ZHAO Wen-jun2
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1.College of Mechano-Electronic Engineering,Lanzhou University of Technology,Lanzhou 730050,China;2.State Key Lab of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,China
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| Abstract: |
| To improve the grain refining performance of Al-Ti-C master alloys,Al-Ti-C master alloys grain refiners were prepared using thermal explosion synthesis of Al-Ti-C in molten aluminum.The influence of Al contents on the reaction process parameters,microstructures and grain refining performance of Al-Ti-C master alloy were investigated using DTA,XRD,SEM and grain refining tests.The results indicate that the Al-Ti-C master alloys consist of Al,Al3Ti and TiC,and the Al contents have remarkable influence on the synthesis temperature,the reaction velocity,the size and distribution of the second phase particles in the synthesized products.It is also shown that the morphology of the second phase particles have a great effect on grain refining performances,and some Al-Ti-C master alloys possess excellent grain refining performance. |
| Key words: Al contents thermal explosion synthesis Al-Ti-C master alloy grain refiner metal material |
