Effects of Trace Amount Modified SiC Nanoparticles and Electromagnetic Stirring(EMS)on Microstructure and Mechanical Properties of 7055 Aluminum Alloy

摘要：

　　The effects of trace amount modified SiC nanoparticles and electromagnetic stirring(EMS)on microstructures and mechanical properties of 7055 aluminum alloy are investigated experimntally.The result shows that the original developed coarse dendrite and columnar with obvious orientation microstructure turns into homogeneous equiaxed microstructure with the application of trace amount modified SiC nanoparticles and EMS.A minimum grain size is 96 μm and has been observed when the addition of modified SiC nanoparticles is 0.05%and the current of EMS is 100A.The ultimate tensile strength is increased by 15.8%and the elongation is improved by 50%compared to those without modified SiC nanoparticles and EMS.Moreover,the compound effects of trace amount modified SiC nanoparticles and EMS is discussed to explain the mechanisms of grain refinement and mechanical properties on 7055 aluminum alloy.

关键词： modified SiC nanoparticles electromagnetic stirring (EMS) 7055 aluminum alloy microstructure mechanical properties

作者: YAN Zhi-ming CHEN Mei-ling YANG Jun YANG Li GAO Hong

作者单位: School of Materials Science and Engineering.Dalian Jiaotong University,Dalian 116028,Liaoning,China

会议类型: 国际会议

会议名称: The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2012-10-22（万方平台首次上网日期，不代表论文的发表时间）