| Abstract Scope |
Haynes 282 is a nickel-based superalloy which excels in high temperature structural applications. While it has traditionally been used as a wrought product, its relatively high weldability makes it a good candidate for laser powder bed fusion (LPBF). But parts produced via LBPF often have significantly different microstructures, and thereby properties, compared to wrought parts. Furthermore, as a precipitation strengthened alloy, Haynes 282 generally requires heat treatment, which needs to be optimized for the printed material. In this study, Haynes 282 samples were printed with different printing parameters and orientations and were subject to varying post-printing heat treatments. The microstructures of the samples were observed before and after heat treatment to characterize grain structure, crystallographic texture, and precipitate structure. Hardness, tensile, and creep testing was performed to evaluate the effect of the processing conditions on the mechanical properties and to compare the properties to literature values for wrought Haynes 282. |