Microstructural characterization of rapidly solidified Type 304 stainless steel. [Powders produced by vacuum gas and centrifugal atomization]

Conference · Fri Nov 01 04:00:00 EST 1985

OSTI ID:6490646

Wright, R N; Flinn, J E; Korth, G E

The microstructures of rapidly solidified Type 304 stainless steel powders produced by vacuum gas (VGA) and centrifugal (CA) atomization have been examined. The solidification morphology and phase distribution have been characterized using optical and scanning electron microscopy, and the relative amounts of ferrite and austenite have been quantified using x-ray diffraction. It has been found that most CA powder particles contain both fcc and bcc phases, with the bcc phase predominating at small particle sizes and the fcc phase at large particle sizes. The VGA powder generally contains less ferrite, with very little dependence on the particle size. In both powders the ferrite was found to be metastable and to transform to austenite on annealing at 900/sup 0/C.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6490646
• Report Number(s): EGG-M-11985; CONF-851217-3; ON: DE86003245
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ANNEALING
ATOMIZATION
BCC LATTICES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COHERENT SCATTERING
CORROSION RESISTANT ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFRACTION
FCC LATTICES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSTRUCTURE
NICKEL ALLOYS
PARTICLE SIZE
PHASE TRANSFORMATIONS
POWDERS
SCATTERING
SIZE
SOLIDIFICATION
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
X-RAY DIFFRACTION