Acoustic emission characterization of corrosion reactions in aluminum alloys

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3577916· OSTI ID:5042399

Arora, A

A description of characteristic acoustic emission (AE) generated in aluminum alloys exposed to various corrosive environments is presented. Several different microacoustic corrosion processes are considered including hydrogen bubble evolution, general corrosion, pitting, crevice corrosion, and stress corrosion cracking Broadband detection and digital recording of AE are used to provide information on AE frequency and waveform characteristics, which are then related to active corrosion reactions to provide AE source mechanisms. Scanning electron microscopy (SEM) studies performed on corroded specimens are used to further identify AE source mechanisms.

• Research Organization: Rockwell International Science Center, Thousand Oaks, CA
• OSTI ID: 5042399
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 40:9; ISSN CORRA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ACOUSTIC EMISSION TESTING
ACOUSTIC TESTING
ALLOYS
ALUMINIUM ALLOYS
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
CRACK PROPAGATION
CREVICE CORROSION
ELECTROCHEMICAL CORROSION
ELECTRON MICROSCOPY
MATERIALS TESTING
MICROSCOPY
NONDESTRUCTIVE TESTING
PITTING CORROSION
SCANNING ELECTRON MICROSCOPY
STRESS CORROSION
TESTING