As-HIP Microstructure of EBM Fabricated Shell Components
2016 (English)In: Proceedings of Wolrd PM2016 - AM - Properties of Lightweight Materials ll, 2016Conference paper (Refereed)
Electron Beam Melting (EBM) was used to build Ti-6Al-4V cylindrical shell samples with different wall thickness filled with powder. Built shell samples were HIPed and the difference in microstructure between the EBM-built walls and densified powder inside the shell components was studied as well as the cohesion between these two regions. Components characterization utilizing LOM and SEM+EBSD indicates that columnar grain growth was consistent before and after HIP in the EBM-built part of the components (walls), whereas the densified material in the center of the component had a fine isotropic microstructure, characteristic for HIPed material. The combination of EBM and HIP is shown to be an attractive way of manufacturing complex-shape full density components for high performance applications, involving shortening of built time in the EBM-processing and lead time in capsule fabrication for HIP.
Place, publisher, year, edition, pages
Additive manufacturing, microstructure of EBM-build components, EBM of Ti64 shell structures, hot isostatic pressing
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:miun:diva-29743OAI: oai:DiVA.org:miun-29743DiVA: diva2:1058862
World Powder Metallurgy Congress, Hamburg, Germany, October 9-13, 2016