Microstructure and Toughness of an AZ80 Mg Alloy Processed by ECAP and Ageing Treatment

摘要：

An extruded AZ80 Mg alloy was subjected to ECAP and subsequent artificial ageing to investigate the influences of ECAP passes and ageing conditions on the mechanical properties. The microstructures and mechanical properties were characterized by optical microscopy (OM), scanning electronic microscopy (SEM) and uniaxial tension tests. The static toughness values were calculated to evaluate the combined effects of ECAP and artificial ageing on the toughness. It is indicated that combination of ECAP and ageing at 300℃ for 8h can significantly increase the toughness of as-extruded AZ80 alloy by 43%. The remarkable twinning and uniform dimples due to the continuous precipitation should be responsible for the increased tensile toughness.

作者: De Liang Yin Xin Chen Jing Tao Wang

作者单位: Department of Materials Science and Engineering,Nanjing University of Science and Technology Nanjing,210094,China

会议类型: 国际会议

会议名称: 5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)

会议地点: 南京

会议语种:英文

页码: 475-480

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）