STRESS CORROSION OF ALUMINUM ALLOY 7075-T651 IN ORGANIC LIQUIDS
IT HAS BEEN SHOWN THAT STRESS-CORROSION CRACKS WILL PROPAGATE FROM A FATIGUE PRECRACK IN 7075-T651 ALUMINUM ALLOY EXPOSED TO VARIOUS ORGANIC ENVIRONMENTS; STRESS CORROSION CRACKS, HOWEVER, DID NOT INITIATE IN SMOOTH SPECIMENS. EVIDENCE IS PRESENTED WHICH INDICATES THAT THE CRACK PROPAGATION PROBABLY IS NOT DUE TO TRACES OF WATER ENVIRONMENTS. THE STRESS-CORROSION CRACK GROWTH RATE HAS BEEN MEASURED IN ETHANOL AND CARBON TETRACHLORIDE AS A FUNCTION OF THE PLANE-STRAIN STRESS-INTENSITY FACTOR. A LINEARLY INCREASING RELATIONSHIP HAS BEEN OBSERVED, AND, FROM THESE RESULTS, VALUES OF STRESS-CORROSION FOR EACH ENVIRONMENT HAVE BEEN ESTIMATED. THE RESULTS OF A FRACTOGRAPHIC ANALYSIS OF THE FRACTURE SURFACES ARE DESCRIBED. EVIDENCE IS PRESENTED TO SHOW THAT SOME LIMITED DISSOLUTION WITH AQUEOUS STRESS-CORROSION OF ALUMINUM ALLOYS, AN ELECTROCHEMICAL REACTION IS INVOLVED IN THE CRACKING. /AUTHOR/
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Supplemental Notes:
- Vol 4, No 3, PP 729-760, 15 FIG, 39 REF
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Authors:
- Proctor, R M
- Paxton, H W
- Publication Date: 1969-9
Media Info
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Serial:
- Journal of Materials
- Publisher: American Society for Testing and Materials (ASTM)
Subject/Index Terms
- TRT Terms: Aluminum alloys; Cracking; Deformation curve; Electrochemistry; Fatigue (Physiological condition); Measurement; Stress corrosion
- Uncontrolled Terms: Crack propagation
- Old TRIS Terms: Carbon tetrachloride
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216906
- Record Type: Publication
- Files: TRIS
- Created Date: Dec 29 1994 12:00AM