After homogenized annealing at（390±10）℃ for 12 hours

AZ61 alloy was hot extruded at 360

370

385 and 400℃ with extrusion ratio of 32:1.Microstructure

mechanical properties and tensile fracture of annealed specimens and hot extruded specimens were investigated.A complete and finished product can be obtained by extruding AZ61 magnesium alloy at 370

385 and 400 ℃

however

it can not be produced by extruding at 360 ℃.With increasing in extrusion temperature

the numbers of recrystallization grain in the extruded AZ61 magnesium alloy are increased greatly

in which the uniformly fine equaixed grain are observed in the extruded specimens at 400 ℃.In addition

the specimens extruded at 370

385 and 400 ℃ are characterized by ductile fracture mechanism

and the specimens extruded at 400 ℃ exhibits excellent performance with tensile strength of 297.43MPa

yield strength of 221.42 MPa and elongation of 22.39%.