Microstructure and Mechanical Properties of AZ91 Alloy Composites Reinforced with Ni-Coated Carbon Nanotubes
标 签 AZ91镁合金 碳纳米管 复合材料 力学性能 AZ91 magnesium alloy carbon nanotube composite mechanical property
AZ91 alloy composites reinforced with nickel coated carbon nanotubes(Ni-CNTs) were fabricated by stirring casting technology.The effects of carbon nanotubes on the mechanical properties and microstructure of the composites were studied,and the fractographs were observed and analyzed by scanning electron microscopy and energy spectrum analysis.The results show that the nickel coated CNTs could refine grain size of the matrix alloy and strengthen mechanical properties of the AZ91 magnesium alloy.Compared with the matrix alloy,tensile strength,elastic modulus and microhardness of the composites had been enhanced significantly with proper adding.The elongation and tensile strength were increased by 90.44% and 37.5% respectively.But with the excessive addition of Ni-CNTs,the Ni-CNTs would segragate,and mechanical properties of the composites were reduced.
中图分类号 TG146.2 TB333
引用该论文: LIAO Lin,YUAN Qiu-hong. Microstructure and Mechanical Properties of AZ91 Alloy Composites Reinforced with Ni-Coated Carbon Nanotubes[J]. Materials for mechancial engineering, 2010, 34(1): 92～95
廖琳,袁秋红. 包覆镍的碳纳米管增强AZ91镁基复合材料的显微组织与力学性能[J]. 机械工程材料, 2010, 34(1): 92～95