Constituents evolution of LFEC 7050 aluminum alloy during processing

摘要：

The d 120 mm ingots of 7050 aluminum alloy were made by low frequency electromagnetic casting (LFEC) and conventional DC casting process,respectively.After homogenization treatment the ingots were extruded to rods and the solution and aging treatment were carried out for the rods.Constituents evolution during processing and effects of LFEC on constituents and remnant constituents were studied.The results show that 7050 aluminum alloy mainly contains Al-Zn-Mg-Cu type and Al-Cu-Fe type constituents.Al-Zn-Mg-Cu type constituents dissolve during homogenization,while Al-Cu-Fe type constituents could not dissolve.After homogenization treatment,the main remnant constituent is Al7Cu2Fe which crushes and orients along the extrusion direction after extrusion.Compared with DC process,by the process of LFEC,the constituents or remnant constituents are smaller in size and less in content.The LFEC process shows significant improvement in elongation by LFEC in both as-cast state and final state.

关键词： 7050 aluminum alloy low frequency electromagnetic casting microstructures constituents

作者: ZUO Yu-bo WANG Shuang ZHAO Zhi-hao CUI Jian-zhong ZHANG Hai-tao TU Gan-feng

作者单位: Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern Univers College of Software,Northeastern University,Shenyang 110004,China School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）