On the effect of building platform material on laser-powder bed fusion of a Ni-base superalloy HAYNES® 282®
Journal article, 2023

Additive manufacturing (AM) by laser powder bed fusion (LPBF) involves melting of layers of powder onto a substrate, called a building platform. Due to cost or convenience considerations, building platform materials rarely match the LPBF material, especially for high temperature materials. To ensure tolerances in component geometries, AM components are often stress-relieved/heat-treated while still attached to the building platform. It is therefore important to understand the effect of dissimilar building platform materials on the properties of the built-up material. These effects may be particularly important for high performance materials such as Ni-base superalloys used for critical applications in the aerospace and energy industries. To investigate this effect, samples of a Ni-base superalloy HAYNES® 282® were built onto a carbon steel building platform in several configurations. The samples were removed from the building platform after heat treatment and subjected to detailed composition analysis and microstructural characterization to investigate the effect of the building platform material on the properties of the additively manufactured part. Room temperature and high temperature tensile testing were used to characterize the material. Results showed no risk of large-scale chemical composition change, or mechanical property degradation of built-up material from on-platform heat treatment.

laser powder bed fusion

stress relief

Additive manufacturing

dissimilar materials

Haynes 282

Author

Abdul Shaafi Shaikh

Chalmers, Industrial and Materials Science, Materials and manufacture

EOS Finland Oy

Fiona Schulz

Chalmers, Industrial and Materials Science, Materials and manufacture

Kevin Minet-Lallemand

EOS Finland Oy

Eduard Hryha

Chalmers, Industrial and Materials Science, Materials and manufacture

European Journal of Materials

26889277 (eISSN)

Vol. 3 1 2132016

Subject Categories

Manufacturing, Surface and Joining Technology

Other Materials Engineering

Metallurgy and Metallic Materials

Composite Science and Engineering

DOI

10.1080/26889277.2022.2132016

More information

Latest update

1/29/2024