#5698. The limit of hot isostatic pressing for healing cracks present in an additively manufactured nickel superalloy

August 2026publication date
Proposal available till 23-05-2025
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Journal’s subject area:
Metals and Alloys;
Industrial and Manufacturing Engineering;
Computer Science Applications;
Ceramics and Composites;
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Abstract:
Inconel 738LC (IN738LC) is a nickel-based superalloy specially used in the hot section components of turbine engines due to its outstanding hot corrosion resistance and mechanical properties under high temperatures. However, one of the main drawbacks of this superalloy is its susceptibility to cracking when it is manufactured by Laser Powder Bed Fusion (LPBF). This paper describes the effect of 400 W laser power and 90° rotation strategy on the formation of cracks and the capability of Hot Isostatic Pressing (HIP) post-treatment to substantially reduce them in the LPBF manufactured IN738LC samples.
Keywords:
Additive manufacturing; Cracking; Hot isostatic pressing (HIP); Inconel 738LC; Laser powder bed fusion (LPBF)

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