锰加入量对铝合金中富铁相形貌和电磁过滤的影响
Influence of Manganese Addition on Iron-rich Phase Shape and Electromagnetic Filtration of Al-Fe Alloy
摘 要
将不同数量的锰添加到Al-2%Fe合金中,进行电磁过滤并浇注试样,研究了合金中富铁相的形貌和力学性能.结果表明：初生Al3Fe相的形貌发生了明显的变化,当锰、铁的摩尔比为1.3~1.5时,针状的富铁相基本消失,取而代之的是块状.锰变质后,抗拉强度比变质前的126 MPa提高了20~30 MPa,伸长率达到22.9%.变质的熔体通过电磁过滤后,由于铁相基本上被去除,合金的伸长率可以达到29.2%,而抗拉强度降低为131 MPa.
抗拉强度
伸长率
电磁过滤
iron-rich phase
tensile strength
elongation
electromagnetic filtration
Abstract
Through adding different contents of Mn into Al-2%Fe alloy,carrying through electromagnetic experiment and casing samples,the morphology of the primary Al3Fe phase and mechanical properties were investigated.Mn has obvious influence on the shape of iron-rich phase,which changed from the needle-like to needle plate-like and particle-like.When the molar ratio of Mn/Fe=1.3-1.5,the modifying effect is the best.The tensile strength is raised by 20-30 MPa after adding Mn,the tensile strength is 126 MPa without Mn,the elongation is up to 22.9%.After the modified melt was acted in magnetic filed,the iron-rich phase move to the pipe wall and is removed because of the electromagnetic repulsion force.The melt is mainly aluminum.Therefore the tensile strength declined to 131 MPa,but the elongation is enhanced further,up to 29.2%.
中图分类号 TG146.2 TG292
所属栏目
基金项目 国家自然科学基金资助项目(50274018)
收稿日期 2006/8/7
修改稿日期 2006/11/4
网络出版日期
作者单位点击查看
备注陈东风(1980-),男,河南商丘人,硕士研究生.
引用该论文: CHEN Dong-feng,CAO Zhi-qiang,ZHANG Ting. Influence of Manganese Addition on Iron-rich Phase Shape and Electromagnetic Filtration of Al-Fe Alloy[J]. Materials for mechancial engineering, 2007, 31(6): 42～45
陈东风,曹志强,张婷. 锰加入量对铝合金中富铁相形貌和电磁过滤的影响[J]. 机械工程材料, 2007, 31(6): 42～45
被引情况:
【1】刘扭参,杨安杰,李俊青,刘忠侠,杨明生, "过滤对电热法制备ZL102合金显微组织和力学性能的影响",机械工程材料 34, 45-47(2010)
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参考文献
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【6】Muali S,Raman K S,Murthy K S S.Morphological studies on β-FeSiAl5 phase in Al-7Si-0.3Mg alloy with trace addition of Be,Mn,Cr and Co[J].Materials Characterization,1994,33:99-112.
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【10】朴杓,森平淳志,佐々健介,等.电磁力を利用した溶融金属中介在物の除去[J].铁と钢,1994,80(5):31-36.
【11】李克,孙宝德,李天晓,等.利用高频磁场分离Al熔体中的金属夹杂[J].金属学报,2001,37(4):405-410.
【12】Mondolfo L Fed,Translated by Wang Z T,Zhang Z L,et al.Structures and properties of aluminum alloys[M].Beijing:Metallurgy Industry Press,1998.
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