Effect of Hot Isostatic Pressing on Microstructure and Properties of GH4169 Superalloy Manufactured by SLM

Effect of Hot Isostatic Pressing on Microstructure and Properties of GH4169 Superalloy Manufactured by SLM

Shanting Niu, Hongpeng Xin, Lida Che, Haofeng Li, Xiangyang Li

Abstract. Superalloy GH4169 is an extremely important material for aircraft structural components in aero-engines. In this study, the effects of different hot isostatic pressing temperature and pressure on the microstructure and mechanical properties of GH4169 were studied by means of metallographic microscope, scanning electron microscope and tensile experiment. The results show that hot isostatic pressing can significantly improve the microstructure of the test alloy manufactured by SLM. With the increase of hot isostatic pressing temperature and pressure, the tensile strength and yield strength of the test alloy decreased slightly, while the elongation showed an opposite trend. The increase of elongation is attributed to the improvement of microstructure uniformity of the test alloy by hot isostatic pressing.

Keywords
Hot Isostatic Pressing (HIP), Additive Manufacturing, GH4169, Properties

Published online 12/8/2023, 11 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Shanting Niu, Hongpeng Xin, Lida Che, Haofeng Li, Xiangyang Li, Effect of Hot Isostatic Pressing on Microstructure and Properties of GH4169 Superalloy Manufactured by SLM, Materials Research Proceedings, Vol. 38, pp 67-77, 2023

DOI: https://doi.org/10.21741/9781644902837-11

The article was published as article 11 of the book Hot Isostatic Pressing

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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