Microstructure and mechanical properties of Haynes 282 superalloy produced by laser powder bed fusion

Ni-base superalloys are essential materials for high-temperature applications in the energy and aerospace sectors. Significant benefits design, function, manufacture of components may be realized from additive manufacturing (AM) these materials. However, because cracking issues during AM fabrication, only a handful have been tried qualified. This article provides an initial evaluation processability properties Haynes 282 by laser-powder bed fusion (LPBF), which is relatively new superalloy with superior to those many legacy wrought superalloys. The results demonstrated that crack-free can manufactured means LPBF full density. mechanical at ambient temperature exceeded reference material as-built heat-treated conditions, albeit significant anisotropy. Mechanical 800 °C indicated yield strength was comparable material, however, ductility significantly reduced. Promising stress rupture performance also indicates ideal candidate adoption manufacturing, especially if heat treatments re-designed additively microstructure.