基于GH4738合金的热流变应力模型及晶粒组织演变模型,提出并实现了利用Deform 3DTM软件对该合金涡轮盘从自由锻前预热直至模锻完成的整个锻造过程的集成式模拟.借助集成式模拟实现了对锻件在整个锻造过程中温度、平均晶粒尺寸等参数的定量控制.同时采用直径300 mm涡轮盘的实际锻造结果验证了所用模型和该模拟方法的可靠性.最后,把集成式模拟运用于直径1450mm涡轮盘盘件的锻造过程模拟,并根据模拟优化方案在8×104t锻压机下成功锻制直径1450mm涡轮盘盘件.为大型变形高温合金涡轮盘的锻造成型提供了工艺优化的理论依据和研究方法.
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