The microstructures of AZ31B magnesium alloy as extrusion and anneal were studied.The results showed that the dynamic recrystallization took place during the hot extruding.

• 对AZ31B镁合金挤压材加工态和退火态组织进行了研究,结果表明镁合金在热挤压过程中发生了动态再结晶。