Effect of alloy composition and laser powder bed fusion parameters on the defect formation and mechanical properties of Inconel 625

Interior long‐life‐fatigue cracking behavior and life prediction of a selective laser melted GH4169 superalloy at different temperatures and stress ratios

“…Many existing studies focus on the relationship between microstructure and mechanical properties of AM metal materials. Researches show that scanning speed, 5 laser power, 6,7 building direction, 8 and scanning strategy 9 could influence AM materials microstructure characteristics, resulting in the changes of mechanical properties. Taking AM Ni‐based superalloy as an example, the scanning speed and laser power could control the energy density during AM process, and finally, change the relative density of the material 5–7 .…”

“…Researches show that scanning speed, 5 laser power, 6,7 building direction, 8 and scanning strategy 9 could influence AM materials microstructure characteristics, resulting in the changes of mechanical properties. Taking AM Ni‐based superalloy as an example, the scanning speed and laser power could control the energy density during AM process, and finally, change the relative density of the material 5–7 . Moreover, the lattice parameters and thermal history are also determined by scanning speed and laser power, resulting in the different phase precipitation 6,7 .…”

“…Taking AM Ni‐based superalloy as an example, the scanning speed and laser power could control the energy density during AM process, and finally, change the relative density of the material 5–7 . Moreover, the lattice parameters and thermal history are also determined by scanning speed and laser power, resulting in the different phase precipitation 6,7 . The mechanical properties of AM materials may be modified by controlling the porosity and precipitation phases 10–12 .…”

“…[5][6][7] Moreover, the lattice parameters and thermal history are also determined by scanning speed and laser power, resulting in the different phase precipitation. 6,7 The mechanical properties of AM materials may be modified by controlling the porosity and precipitation phases. [10][11][12] In addition, the building direction can lead to the difference of thermal history and morphology of melt pool during AM process, which will not only change the material anisotropy but also have a significant impact on the mechanical properties as well.…”

On the hot isostatic pressing of Inconel 625 structures built using laser powder bed fusion at higher layer thickness

“…Inconel 625 (IN625) is one of the Nibased superalloys that nds wide applications in marine, aeronautics, chemical, aerospace, nuclear and petrochemical industries 3 . The alloy is solid solution strengthened with the addition of Fe and Nb into the Ni matrix and contains Cr and Mo for improving the corrosion resistance and high-temperature strength, respectively [4][5][6] . IN625 has excellent weldability with minimal cracking susceptibility and can be deployed for applications ranging from 0°C -1000°C 4,7,8 .…”