Review of stress-corrosion cracking in high-strength aluminum alloys. [Al alloys 7090, 7091, IN 9052 and Al-Li ingot metallurgy]

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5307423

Pickens, J R; Christodoulou, L; Langan, T J ^[1]

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1. Martin Marietta Laboratories, Baltimore, MD (USA)

Developments in understanding the mechanisms of stress-corrosion cracking (SCC) of high-strength aluminum alloys are highlighted from early dissolution models, to present hydrogen embrittlement dominated theories. Uncertainties in the present view of the SCC mechanism are identified. The means by which SCC susceptibility has been reduced in ingot metallurgy (I/M) alloys are described. The susceptibility of new powder metallurgy (P/M) alloys 7090, 7091, IN 9052 and Al-Li I/M alloys is assessed and compared with that of conventional I/M alloys. Means by which understanding the SCC mechanism can be used to decrease SCC susceptibility are proposed.

• OSTI ID: 5307423
• Report Number(s): CONF-840909-; CODEN: TMPSA
• Journal Information: TMS (The Metallurgical Society) Paper Selection; (USA), Vol. 56; Conference: TMS-AIME fall meeting, Detroit, MI (USA), 16-20 Sep 1984; ISSN 0197-1689
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
FRACTURE MECHANICS
STRESS CORROSION
CRACKS
HYDROGEN EMBRITTLEMENT
METALLURGY
POWDER METALLURGY
ALLOYS
CHEMICAL REACTIONS
CORROSION
EMBRITTLEMENT
MECHANICS
360105* - Metals & Alloys- Corrosion & Erosion
360103 - Metals & Alloys- Mechanical Properties