| Grain refinement effects of Al based alloys with low titanium content produced by electrolysis |
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| 作者姓名： | 刘志勇 王明星 翁永刚 宋天福 谢敬佩 霍裕平 |
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| 作者单位： | [1]KeyLaboratoryofMaterialsPhysics,ZhengzhouUniversity,Zhengzhou450052,China [2]DepartmentofMaterialsScienceandEngineering,LuoyangInstituteofTechnology,Luoyang471039,China |
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| 摘 要： | A series of Al based alloys with low titanium contents (mass fraction) from 0.178% to 0.526% were directly produced in ordinary industrial electrolyzer,The electrolyzing results show that producing Al based alloys analysis shows that this method has a great refining effect on transiting the coarse columnar grains in pure Al to equiaxed grains.The grain sizes decrease with the increase of titanium content and tend to a low limit at about 130μm .During the solidification,the non-equilibrium distribution of titanium leads to a great growth-restricting effect and a constitutional under-cooling zone in front of the growing liquid /solid interface.
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| 关 键 词： | 铝合金 低钛含量 电解 晶粒细化 |
Grain refinement effects of Al based alloys with low titanium content produced by electrolysis |
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| LIU Zhi yong ,WANG Ming xing,WENG Yong gang ,SONG Tian fu ,XIE Jing pei ,HUO Yu ping.Grain refinement effects of Al based alloys with low titanium content produced by electrolysis[J].Transactions of Nonferrous Metals Society of China,2002,12(6):1121-1126. |
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| Authors: | LIU Zhi yong WANG Ming xing WENG Yong gang SONG Tian fu XIE Jing pei HUO Yu ping |
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| Affiliation: | LIU Zhi yong 1,WANG Ming xing,WENG Yong gang 1,SONG Tian fu 1,XIE Jing pei 2,HUO Yu ping 1 |
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| Abstract: | A series of Al based alloys with low titanium contents (mass fraction) from 0.178% to 0.526% were directly produced in ordinary industrial electrolyzer. The electrolyzing results show that producing Al based alloys with titanium contents of less than 0.30% without great loss of electrolysis efficiency is possible. The quantitative analysis shows that this method has a great refining effect on transiting the coarse columnar grains in pure Al to equiaxed grains. The grain sizes decrease with the increase of titanium content and tend to a low limit at about 130μm. During the solidification, the non-equilibrium distribution of titanium leads to a great growth-restricting effect and a constitutional under-cooling zone in front of the growing liquid /solid interface. |
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| Keywords: | aluminum alloy low titanium content electrolysis grain refinement |
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