On the microstructural evolution and porosity consolidation in 316L stainless steel during hot isostatic pressing

Adam J. Cooper, Samuel A.J. Armson, Olivia C.G. Tuck, Michael Preuss

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


If advanced manufacturing technologies are to be adopted over conventional manufacturing processes in the nuclear industry-the most regulatory challenging industry-rigorous fundamental studies that develop underpinning knowledge, materials performance data, and predictive capabilities are essential. Herein we have employed the use of electron backscatter diffraction (EBSD) and 3D X-ray computed tomography (XCT) to characterize microstructure evolution and porosity consolidation during the early stages of powder metallurgy hot isostatic pressing (PM-HIP). The data herein highlight the mechanisms through which the powder particle size distribution encourages localized plastic deformation and subsequent microstructural recrystallization of Type 316L stainless steel; the effect of powder particle size distribution on the rate of porosity consolidation is also discussed. Specifically, we have determined the temperature and pressure conditions that are required to initiate dynamic recrystallization during HIP, and explain how this is influenced by the powder particle size distribution.

Original languageEnglish
Title of host publicationProceedings of the ASME 2019 Pressure Vessels & Piping Conference PVP 2019
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages11
ISBN (Electronic)9780791858974
Publication statusPublished - 2019
Externally publishedYes
EventASME Pressure Vessels and Piping Conference (PVP) 2019 - San Antonio, United States of America
Duration: 14 Jul 201919 Jul 2019

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
ISSN (Print)0277-027X


ConferenceASME Pressure Vessels and Piping Conference (PVP) 2019
Abbreviated titlePVP 2019
Country/TerritoryUnited States of America
CitySan Antonio

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