WIT Press


Hydrogen Damage In Al-Li Alloy Reinforced By SiCw

Price

Free (open access)

Paper DOI

10.2495/LD960641

Volume

13

Pages

10

Published

1996

Size

1,160 kb

Author(s)

E. Quadrini

Abstract

This study has been conducted to further the influence of some alloying elements and of microstructure on the behaviour to stress corrosion by hydrogen of Al-Li alloy matrix composite.Silicon carbide whisker (SiCw) reinforced Al - Li - Mg - Cu - Zr alloy composites were made using P/M technique. Microstructural development subject to controlled and systematic aging treatments was investigated using analytical transmission electron microscopy and matrix microhardness measurements. The hydrogen embrittlement tests carried out a temperature of 22 + 1°C and the hydrogen was intruduced into the material with the cathodic load procedure, using an aqueous solution 0.04 N HC1 in contact with the atmosphere. The hydrogen time charge it was of 2 hours with a current density value about 10 mA cm'2. The fractures

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