Formation of invariant plain-strain and tent-shaped surface reliefs by the diffusional ledge mechanism
- Univ. of Birmingham (United Kingdom). School of Metallurgy and Materials
- Geo-Centers, Inc., Ft. Washington, MD (United States)
Electron channeling contrast and electron backscattering patterns (EBSPs), generated in scanning electron microscopes (SEMs), were used to study the question of whether tent-shaped surface reliefs associated with ferrite plates in Fe-0.07 pct and Fe-0.50 pct C low-alloy steels are single crystals or back-to-back pairs of plates. Although more than 50 ferrite plates were examined in detail, any misorientation contained within them must have been <1 deg. Additionally, no sightings of the low-angle grain boundaries approximately bisecting ferrite plates expected on the back-to-back plates mechanism were ever made. The efforts of previous investigators to explain tent-shaped (and invariant plane-strain) reliefs on the basis of diffusional ledgewise growth were further extended.
- OSTI ID:
- 6935820
- Journal Information:
- Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Vol. 25:9; ISSN 0360-2133
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LOW ALLOY STEELS
MICROSTRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
FERRITE
GRAIN BOUNDARIES
MONOCRYSTALS
PRECIPITATION
ALLOYS
CARBON ADDITIONS
CRYSTALS
IRON ALLOYS
IRON BASE ALLOYS
PHASE TRANSFORMATIONS
SEPARATION PROCESSES
STEELS
360102* - Metals & Alloys- Structure & Phase Studies