As-HIP Near-Net Shapes as an Alternative to Forgings and Castings

Extremely large and complex as-HIP Near Net Shapes (NNS) are becoming a more attractive option compared to hogging material out of large forgings and plates or trying to acquire large castings. HIP technology has demonstrated the ability to make large components that show better mechanical properties and pose fewer challenges with non-destructive inspection than conventionally fabricated components. Furthermore, the costs and long lead times associated with forged or cast components can put a program’s budget and schedule in jeopardy. This paper will explore the technical work being done at Amaero and Oak Ridge National Laboratory on HIP’ing large parts and provide a detailed business case comparing our process to conventionally forged and cast routes.