Use of anomalous small angle x-ray scattering to investigate microstructural features in complex alloys
The research thrust has been directed into two areas. The principal effort has been spent in an investigation of the use of anomalous small angle x-ray scattering (ASAXS) to observe changes in the microstructure of a relatively complex alloy produced by high temperature deformation or aging. A second effort involves a study of the high temperature behavior of several ferritic steels. In particular, we are investigating the precursors and earliest stages of fatigue crack initiation, especially how initiation is affected by hold times and by environment. We have been studying carbides in two ferritic steel alloys. The first is Fe9CrlMo modified by the addition of small amounts of the strong carbide formers, V and Nb. This alloy, which has been studied at ORNL and in the course of this grant, is used in power-generating equipment. The second alloy is AF1410 (primarily Fel4Col0Ni), an ultra high-strength, high toughness steel. 8 figs.,
- Research Organization:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- FG02-86ER45229
- OSTI ID:
- 6486053
- Report Number(s):
- DOE/ER/45229-T3; ON: DE91002397
- Country of Publication:
- United States
- Language:
- English
Similar Records
Use of anomalous small angle x-ray scattering to investigate microstructural features in complex alloys
Use of anomalous small angle x-ray scattering to investigate microstructural features in complex alloys. Technical progress report, July 1, 1987--July 31, 1988
Related Subjects
CHROMIUM ALLOYS
MECHANICAL PROPERTIES
CHROMIUM CARBIDES
PRECIPITATION
COBALT ALLOYS
IRON BASE ALLOYS
FATIGUE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
CRACKS
MICROSTRUCTURE
NIOBIUM
PROGRESS REPORT
SCALING
SMALL ANGLE SCATTERING
TEMPERATURE EFFECTS
VANADIUM
ALLOYS
CARBIDES
CARBON COMPOUNDS
CHROMIUM COMPOUNDS
CRYSTAL STRUCTURE
DOCUMENT TYPES
ELEMENTS
IRON ALLOYS
METALS
SCATTERING
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies
360105 - Metals & Alloys- Corrosion & Erosion