Influence of composition and microstructure on the corrosion behavior of two Al-Li-X alloys. [Al-Li-Cu-Zr-Ge alloys with and without Mg]
- Univ. of Virginia, Charlottesville (USA)
The corrosion behavior of two Al-Li-Cu-Zr-Ge alloys with and without Mg is being studied. The types of corrosion tests being performed include exfoliation corrosion, crevice corrosion, constant immersion for weight loss measurements and pitting analysis, potentiodynamic polarization for determination of the critical pitting potential, and potentiostatic measurements for determination of corrosion potential. All tests are being conducted in 3.5 w/o NaCl solution, with the exception of the exfoliation tests, which follow the guidelines of ASTM G-34. The alloys are being tested in both the underaged and overaged conditions. The treatments result in significant microstructural differences due to the precipitation of several metastable and equilibrium phases. The results are discussed with respect to composition and microstructural variations.
- OSTI ID:
- 5364865
- Report Number(s):
- CONF-840909--
- Journal Information:
- TMS (The Metallurgical Society) Paper Selection; (USA), Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Vol. 56; ISSN TMPSA; ISSN 0197-1689
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360105* -- Metals & Alloys-- Corrosion & Erosion
AGING
ALKALI METAL COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COPPER ALLOYS
CORROSION
CREVICE CORROSION
CRYSTAL STRUCTURE
GERMANIUM ALLOYS
HALIDES
HALOGEN COMPOUNDS
LITHIUM ALLOYS
LOSSES
MAGNESIUM ADDITIONS
MAGNESIUM ALLOYS
MICROSTRUCTURE
PITTING CORROSION
PRECIPITATION
SEPARATION PROCESSES
SODIUM CHLORIDES
SODIUM COMPOUNDS
WEIGHT
ZIRCONIUM ALLOYS