An electron microscope study of the featureless zone obtained during rapid solidification

Journal Article · Sun Jan 01 00:00:00 EST 1984 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02644384· OSTI ID:6325582

Brown, J M; Sekhar, J A

The microstructure observed on the rapid solidification of dilute alloys of Cu in Al has been examined. A high intensity heat source, namely a 6 kW CO/sub 2/ laser beam was passed over the surface of and on regrowth a featureless zone is seen prior to a cellular morphology. Scanning transmission electron microscopy in conjunction with X-ray microanalysis show that a concentration gradient exists across this region. The results support the theory that it is a plane front zone formed during resolidification process.

• Research Organization: Univ. of Illinois, Urbana, IL
• OSTI ID: 6325582
• Journal Information: Metall. Trans., A; (United States), Vol. 15A:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
MICROSTRUCTURE
RECRYSTALLIZATION
SOLIDIFICATION
COPPER ALLOYS
CARBON DIOXIDE LASERS
CRYSTAL-PHASE TRANSFORMATIONS
HEAT TREATMENTS
LASER-RADIATION HEATING
SCANNING ELECTRON MICROSCOPY
SPLAT COOLING
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ALLOYS
COHERENT SCATTERING
COOLING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON MICROSCOPY
GAS LASERS
HEATING
LASERS
MICROSCOPY
PHASE TRANSFORMATIONS
PLASMA HEATING
SCATTERING
360102* - Metals & Alloys- Structure & Phase Studies