2022 年 69 巻 7 号 p. 293-298
Porous metal materials are constructed using selective laser melting (SLM). Porous metals exhibit different physical and mechanical properties. It is vital to understand how process parameters affect mechanical qualities so that SLM objects can be used in diverse components. In this study, SUS630 specimens were developed under various combinations of laser parameters. The influence of laser power and scanning speed on the tensile strength of porous SUS630 was investigated. Initially, 13 porous specimens were produced under diverse conditions. The tensile tests were performed on these specimens, and their density was evaluated. These results indicated that the energy density affected the tensile strength. In the porous specimens, an experimental equation describing the link between tensile strength and energy density was formulated. Furthermore, the tensile strength in the laminating direction was lower in the porous specimens than in the other orientations.