Comparison of Microstructure and Properties of Nickel-Copper Alloy Prepared by Casting and Laser Powder Bed Fusion Process

Alice Chlupová; Ivo Šulák; Ivo Kuběna; Tomáš Kruml; Jan Philipp Roth; Katrin Jahns

doi:10.4028/p-884q32

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HomeMaterials Science ForumMaterials Science Forum Vol. 1082Comparison of Microstructure and Properties of...

Comparison of Microstructure and Properties of Nickel-Copper Alloy Prepared by Casting and Laser Powder Bed Fusion Process

Abstract:

Nickel-copper alloys are commonly used in highly corrosive conditions where strength is required. Typical applications are in the marine sector, petrochemical industry, or energy facilities such as chemical tubes, pumps, heat exchangers and superheated steam systems. This paper compares the microstructure and mechanical properties of a cast alloy with a 3D printed alloy processed via a laser powder bed fusion (LPBF) technique. Small cylindrical specimens were used for tensile tests at room temperature (RT) and elevated temperatures up to 750 °C in air. The tensile stress-strain response was determined for both types of materials. At RT, LPBF material has a higher yield strength and ultimate tensile strength than a cast alloy. At elevated temperatures, the strength of both variants is comparable. However, the fracture elongation of the LPBF material is significantly lower over the entire range of investigated temperatures. Fracture surfaces and polished sections parallel to the specimen axis were investigated to compare the microstructure and damage mechanisms of the nickel-coper alloy 400 prepared by conventional casting and via LPBF.

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Periodical:

Materials Science Forum (Volume 1082)

Pages:

171-176

DOI:

https://doi.org/10.4028/p-884q32

Citation:

Cite this paper

Online since:

March 2023

Authors:

Alice Chlupová, Ivo Šulák*, Ivo Kuběna, Tomáš Kruml, Jan Philipp Roth, Katrin Jahns

Keywords:

Casting, Fractography, Laser Powder Bed Fusion, Microstructure, Nickel-Copper Alloy, Tensile Properties

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Creative Commons CC BY 4.0

* - Corresponding Author

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