Regarding 3D additive manufacturing processes capable of directly creating complex three-dimensional structures from raw powder, we are advancing research on the correlations among process conditions, material microstructure, and properties from both experimental and computational prediction perspectives. Targeting a variety of structural materials—Ni-based alloys (Hastelloy X, Inconel 738LC, etc.), Ti alloys (Ti-6Al-4V, Ti-Nb), heat-resistant steels (modified 9Cr-1Mo steel), stainless steels, and others—we are working to establish microstructure control techniques unique to 3D fabrication and to optimize mechanical properties. Furthermore, based on these findings, we are also taking on the development of new materials suitable for 3D fabrication. In addition, we are researching thermal spray coatings to protect components from harsh environments and nondestructive evaluation technologies to ensure reliability.
The Additive Manufacturing Group conducts daily research activities using four different types of equipment.
Laser Powder Bed (PBF-LB)
Manufactured by SLM Solutions SLM280HL
Laser-Directed Energy Deposition (DED)
NIDEC Machine Tools LAMDA200
Electron Beam Powder Bed Method (PBF-EB)
JEOL Ltd. JAM-5200EBM
Laser Powder Bed Fusion (PBF-LB)
Manufactured by Concept Laser Mlab Q10
Now recruiting for joint research!
We are calling for joint research on 3D printing processes and thermal spraying.
【Contact information】
Makoto Watanabe
WATANABE.Makoto=nims.go.jp(Please change [ = ] to [ @ ])
・Makoto Watanabe, "Process-Microstructure-Properties Linkage of Ni-Based Alloys by Additive Manufacturing Process".
・Tomonori Kitashima, "Mechanical Properties of Heat-Resistant Ferritic-Stainless Steel Fabricated by Laser Powder Bed Fusion".
・Masahiro Kusano, "Microstructural Control by Heat Treatment and High-Temperature Mechanical Properties in Crack-Free IN738LC Fabricated by Laser Powder Bed Fusion".
・Phuangphaga Daram, "Effects of Substrate Preheating and Processing Parameters on the Crystallographic Texture of Hastelloy X on SX-Like Ni Fabricated by L-PBF Process with Flat-Top Laser Beam".
・Xinzhe Zhu, "Effects of Scan Speed on Single-Crystal Formation in Ti-42Nb Alloy Fabricated by Laser Powder Bed Fusion with a Flat-Top Beam".
