Microstructures of laser deposited 304L austenitic stainless steel

Conference · 22 May 2000

OSTI ID:756124

BROOKS, JOHN A ^[1]; HEADLEY, THOMAS J; ROBINO, CHARLES V

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1. Sandia National Laboratories

Laser deposits fabricated from two different compositions of 304L stainless steel powder were characterized to determine the nature of the solidification and solid state transformations. One of the goals of this work was to determine to what extent novel microstructure consisting of single-phase austenite could be achieved with the thermal conditions of the LENS [Laser Engineered Net Shape] process. Although ferrite-free deposits were not obtained, structures with very low ferrite content were achieved. It appeared that, with slight changes in alloy composition, this goal could be met via two different solidification and transformation mechanisms.

• Research Organization: Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 756124
• Report Number(s): SAND2000-1279C
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ENERGY BEAM DEPOSITION
LASER-RADIATION HEATING
MICROSTRUCTURE
PHASE TRANSFORMATIONS
SOLIDIFICATION
STAINLESS STEEL-304L