Study of the {delta}{prime} reversion process in 8090 alloys

Journal Article · Mon Sep 15 04:00:00 EDT 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00186-3· OSTI ID:540985

Lambri, O A; Perez-Landazabal, J I; No, M L; San Juan, J ^[1]

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1. Univ. del Pais Vasco, Bilbao (Spain)

Al-Li based alloys have been widely studied for their potential applications in the aerospace industry, owing to the fact that they exhibit a higher Young`s modulus and lower density than the conventional Al-based alloys. In this work, the microstructure evolution between room temperature (RT) aging of the as-quenched sample, and the microstructure associated with high temperature treatments in a 8090 alloy has been studied. Thermoelectric-power measurements (TEP), X-rays diffraction (XRD) and Vickers micro hardness test (VMH) were employed in this work in order to know simultaneously the microstructural state and the mechanical behavior. Due to the precision of the TEP measurements, the present study shows clearly the kinetics of the {delta}{prime} reversion process. Therefore, the best reversion treatment in order to reduce the hardness of the as-quenched sample after a solid solution treatment can be accurately determined.

• OSTI ID: 540985
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 6 Vol. 37; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
ALUMINIUM BASE ALLOYS
COPPER ALLOYS
HARDNESS
HEAT TREATMENTS
INTERMETALLIC COMPOUNDS
KINETICS
LITHIUM ALLOYS
MAGNESIUM ADDITIONS
MICROSTRUCTURE
THERMOELECTRICITY
X-RAY DIFFRACTION