Hardness, chemical, and microstructural studies for laser-fabricated metal parts of graded materials
Abbreviated Journal Title
J. Laser Appl.
direct metal deposition; rapid manufacturing; graded materials; laser-fabricated metal parts; hardness testing; ductile metal parts; solidification; microstructure; ALUMINIDE; Materials Science, Multidisciplinary; Optics; Physics, Applied
Laser deposition of metal layers has been recognized, in recent years, as a one-step process to fabricate metal parts instead of the two-step process of producing a mold and then using the mold to cast a metal part. The authors have employed this one-step technique to create graded materials by varying the part's composition from 100% stainless steel to a 100% nickel-based superalloy. Mechanical properties of these graded materials are measured and the effects of slow solidification rates are investigated. A multimode CO2 laser is operated at 270 W to produce wall-like structures of graded materials. The CO2 laser beam is focused to a spot size of 600 mu m using a 127 mm focal length lens. (C) 2000 Laser Institute of America. [S1042-346X(00)00405-8].
Journal of Laser Applications
"Hardness, chemical, and microstructural studies for laser-fabricated metal parts of graded materials" (2000). Faculty Bibliography 2000s. 2632.