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建立了Waspaloy高温合金材料流变应力本构模型以及高温合金涡轮盘复合包套锻压工艺有限元仿真模型,利用Deform 3D有限元软件研究了包套厚度、绝热材料和工艺参数对高温合金成形特性的影响。结果表明:适当增加复合包套厚度、提高开锻温度均可使坯料获得均匀的温度场,降低变形抗力与成形载荷,同时避免模具温度过高,提高了模具使用寿命;研究还表明包套材料导热系数对坯料温度场、应力场和载荷的影响较小。
The flow stress constitutive model of Waspaloy superalloy material and the finite element simulation model of the forging process of the high-temperature alloy turbine disk composite sheath were established. Deform 3D finite element software was used to study the influence of the sheath thickness, thermal insulation material and process parameters on the forming properties of superalloys influences. The results show that increasing the thickness of the composite sheath and increasing the temperature of forging can increase the temperature uniformity of the billet, reduce the deformation resistance and the forming load, and avoid the over-temperature of the mold and increase the service life of the billet. The study also shows that the sheathing material Thermal conductivity has little effect on the temperature field, stress field and load of the billet.