Use of High-Pressure Heat Treatment (HPHTTM) for L-PBF F357

Chad Beamer, Andrew Wessman, Donald Godfrey

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Abstract. Recent advancements in hot isostatic pressing (HIP) equipment now offer the ability to integrate HIP and heat treatment in the HIP furnace with the aid of controllable high-speed cooling and in-HIP quenching. This approach not only offers improvement in productivity but provides a path to prevent anomalies during heat treatment including thermally induced porosity (TIP) and part quench cracking or distortion. This manuscript will cover the approach of High Pressure Heat Treatment (HPHTTM) applied to SLM Solutions laser powder bed fusion (L-PBF) printed high strength aluminum alloy F357. Microstructure, tensile properties, and part distortion are evaluated. The results capture a post process method making it possible to prevent hydrogen blistering, mitigate defects present in the L-PBF material, offer strength properties exceeding that of MMPDS cast properties, and minimize geometric distortion of complex part geometries.

High Strength Aluminum Alloys, F357, Hot Isostatic Pressing, HIP, High Pressure Heat Treatment, HPHT, Uniform Rapid Quenching, URQ, Hydrogen Blistering, Distortion, Additive Manufacturing

Published online 12/8/2023, 6 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Chad Beamer, Andrew Wessman, Donald Godfrey, Use of High-Pressure Heat Treatment (HPHTTM) for L-PBF F357, Materials Research Proceedings, Vol. 38, pp 55-60, 2023


The article was published as article 9 of the book Hot Isostatic Pressing

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