Effect of thermal and mechanical pretreatments on the Guinier--Preston zone state of a commercial grade 7075 aluminum alloy
- Sandia Laboratories, Albuquerque, NM
The Guinier--Preston zone state of a commercial grade 7075 aluminum alloy, and the effects of both thermal and mechanical pretreatment on the zonal state were determined. The main investigative techniques used were x-ray small angle scattering and wide angle x-ray diffraction. The aging sequence was determined to be: Solid Solution ..-->.. GP Zones ..-->.. eta' ..-->.. eta and eta' ..-->.. eta for the particular heat treatments used during this research. This aging sequence was not altered by mechanical pretreatment, but the initial aging kinetics did increase. Thermal pretreatments produced a GP zone state that remained stable for longer aging times and at higher temperatures than without the pretreatments.
- OSTI ID:
- 6517572
- Journal Information:
- Metall. Trans., A; (United States), Vol. 8A:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM BASE ALLOYS
GUINIER-PRESTON ZONES
MECHANICAL PROPERTIES
COPPER ALLOYS
MAGNESIUM ALLOYS
ZINC ALLOYS
AGING
CHROMIUM ADDITIONS
DISTRIBUTION
HEAT TREATMENTS
IRON ADDITIONS
PARTICLE SIZE
PRECIPITATION
SCATTERING
SILICON ADDITIONS
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TITANIUM ADDITIONS
X-RAY DIFFRACTION
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
COHERENT SCATTERING
DIFFRACTION
IRON ALLOYS
SEPARATION PROCESSES
SILICON ALLOYS
SIZE
TITANIUM ALLOYS
ZONES
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties