Effect of hot isostatic pressing on the microstructural evolution and tensile properties of laser powder bed fusion-processed Co-based superalloy MAR-M-509A

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F25%3A10259477" target="_blank" >RIV/61989100:27230/25:10259477 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27360/25:10259477

Result on the web

<a href="https://www.confer.cz/metal/2025/5150-effect-of-hot-isostatic-pressing-on-the-microstructural-evolution-and-tensile-properties-of-laser-powder-bed-fusion-processed-co-based-superalloy-mar-m-509a" target="_blank" >https://www.confer.cz/metal/2025/5150-effect-of-hot-isostatic-pressing-on-the-microstructural-evolution-and-tensile-properties-of-laser-powder-bed-fusion-processed-co-based-superalloy-mar-m-509a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2025.5150" target="_blank" >10.37904/metal.2025.5150</a>

Result language

angličtina

Original language name

Effect of hot isostatic pressing on the microstructural evolution and tensile properties of laser powder bed fusion-processed Co-based superalloy MAR-M-509A

Original language description

Superalloys based on Ni, Ni-Fe, and Co are among the most used metallic materials for high-temperature applications due to their excellent strength, creep and corrosion resistance. Co-based superalloys, in particular, offer superior corrosion resistance compared to Ni-based counterparts, making them ideal for longlasting components subjected to moderate static or cyclic loads at elevated temperatures. However, their high hardness and strength pose significant challenges in machining, increasing production costs. To overcome these limitations, research has increasingly focused on additive manufacturing techniques that enable the fabrication of complex geometries with reduced material waste. This study investigates the feasibility of producing the Co-based superalloy Mar-M-509A using laser beam powder bed fusion (LB-PBF) followed by post-processing heat treatment. Components fabricated by laser powder bed fusion (LB-PBF) typically exhibit inherent internal porosity, microstructural anisotropy, and elevated residual stresses due to the rapid solidification and layer-wise nature of the process. These deficiencies necessitate the application of post-processing techniques, such as heat treatment or hot isostatic pressing (HIP), to enhance the microstructural integrity and mechanical performance of the material. This study examines the influence of various LB-PBF process parameters on the relative density of printed components and evaluates the effects of heat treatment and HIP on the microstructure and tensile properties. Heat treatment aimed at relieving internal stresses resulted in a yield strength of up to 980 MPa with an elongation of 6.5 %. In contrast, HIP treatment led to a reduction in yield strength to 730 MPa but significantly improved elongation to 9.9 %. The microstructural evolution induced by HIP and its impact on mechanical performance are analysed and discussed in detail.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

<a href="/en/project/TN02000018" target="_blank" >TN02000018: National Centre of Competence ENGINEERING</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

METAL 2025 : 34th International Conference on Metallurgy and Materials : abstracts : May 21 - 23, 2025, OREA Congress Hotel Brno, Czech Republic, EU

ISBN

978-80-88365-26-6

ISSN

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e-ISSN

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Number of pages

7

Pages from-to

504-509

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

May 21, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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