热变形对2618合金显微组织的影响

采用热模拟变形和光学显微镜研究了热压缩变形对2618合金中Al9FeNi相形态和尺寸的影响.在Gleebe-1500热模拟机上，对2618合金在温度为400～470℃，应变速率为0.01～1s

The effect of hot deformation on the microstructure of 2618 alloy

The effect of hot compressive deformation on the morphology and size of Al9FeNi phase in 2618 alloy was investigated by hot physical simulation deformation and optical microscopy. The compressive deformation was performed on the Gleebe-1500 hot simulator with the deformation temperature being 400 ℃ to 470 ℃, strain rate 0.01 s- 1 to 1 s-1and deformation degree 20% to 60%. The results show that eutectic Al9FeNi phase can be fractured under different deforming conditions, but the primary Al9 FeNi phase is only partly deformed greatly. Under the condition of 400 ℃, 1 s-1and 60%, not only the eutectic Al9FeNi phase can be fractured apparently but also the primary A19FeNi phase can be fractured to some extent. The analysis of the production sample shows that primary Al9 FeNi phase has been crashed under the condition of large deformation in several working procedures.