Microstructure and properties of AZ80 magnesium alloy prepared by hot extrusion from recycled machined chips

作者：Liu Y; Li YY; Zhang DT; Ngai TWL; Chen W

来源：Transactions of Nonferrous Metals Society of China, 2002, 12(5): 882-885.

• Hot extrusion
• Recycled machined chips

AZ80 magnesium alloy was prepared by hot extrusion of recycled machined chips and its microstructure and mechanical properties were investigated. Hot pressing was employed to prepare extrusion billets of AZ80 chips, then the billets were hot extruded at 623 K with an extrusion ratio of 25:1. The extruded rods show a high ultimate tensile strength of 285 MPa and a high elongation of 6%. Due to grain refinement by extrusion, mechanical properties of the extruded rods are much higher than those of as-cast AZ80 alloy. Process technique and chips densification mechanism were also studied. Results show that hot extrusion is an efficient method for AZ80 alloy chips recycling.

• 出版日期2002-10
• 单位华南理工大学