Comparison of mechanical properties and structure of Haynes 282 consolidated via two different powder metallurgy methods: laser powder bed fusion and hot pressing

Abstract The development of powder metallurgy methods in recent years has caused traditional casting to be replaced many industrial applications. Using such methods, it is possible obtain parts having the required geometry after a process that saves both manufacturing costs and time. However, there are material issues decrease functionality these including mechanical properties anisotropy greater susceptibility cracking due chemical segregation. main aim current article analyze depth for two processes: laser bed fusion (LPBF) hot-pressing (HP) methods—selected experiment because they widespread use. Microstructure tests were performed directions, X Z. results show was an issue, although seems problem more significant samples produced via LPBF SLM technique, which displayed only half elongation building direction (18%) compared with perpendicular (almost 38%). should noted fracture toughness shows high values higher even than those HP wrought samples. Additionally, highest level homogeneity comparison sample, observed sintered equiaxed grains visible twin boundaries. tensile properties, mainly strength elongation, material. Overall, from practical standpoint, showed sintering best method terms based on microstructural properties.