skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In-situ monitoring of pitting corrosion in aluminum alloy 2024

Abstract

An in-situ monitoring method was used to observe the initiation sites and the processes of pitting corrosion in aluminum alloy 2024-T3 in real time. These observations complemented more detailed information about composition and distribution of constituent particles, pre- and post-corrosion surface morphology, and the internal morphology of corrosion pits. In-situ observations provided a comprehensive view of the development of localized corrosion in real time. Results confirmed the importance of intermetallic constituent particles in promoting initiation and growth of pits in aluminum alloys. Heterogeneous distribution of these particles served to define the location and extent (or severity) of pitting. A conceptual model was proposed as a framework for continued research. The formation of occluded cells under corrosion product domes over severe pits was observed. This formation will be incorporated into an overall reconsideration and modeling of the processes of pitting corrosion of aluminum alloys.

Authors:
 [1];  [2]; ;  [3]
  1. China Steel Corp., Kaohsiung (Taiwan, Province of China)
  2. Univ. Bordeaux 1 (France). Lab. de Mecanique-Physique
  3. Lehigh Univ., Bethlehem, PA (United States)
Publication Date:
OSTI Identifier:
619573
Resource Type:
Journal Article
Resource Relation:
Journal Name: Corrosion; Journal Volume: 54; Journal Issue: 6; Other Information: PBD: Jun 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM BASE ALLOYS; PITTING CORROSION; MONITORING; MORPHOLOGY; CORROSION PRODUCTS; MATHEMATICAL MODELS

Citation Formats

Liao, C.M., Olive, J.M., Gao, M., and Wei, R.P. In-situ monitoring of pitting corrosion in aluminum alloy 2024. United States: N. p., 1998. Web. doi:10.5006/1.3284873.
Liao, C.M., Olive, J.M., Gao, M., & Wei, R.P. In-situ monitoring of pitting corrosion in aluminum alloy 2024. United States. doi:10.5006/1.3284873.
Liao, C.M., Olive, J.M., Gao, M., and Wei, R.P. Mon . "In-situ monitoring of pitting corrosion in aluminum alloy 2024". United States. doi:10.5006/1.3284873.
@article{osti_619573,
title = {In-situ monitoring of pitting corrosion in aluminum alloy 2024},
author = {Liao, C.M. and Olive, J.M. and Gao, M. and Wei, R.P.},
abstractNote = {An in-situ monitoring method was used to observe the initiation sites and the processes of pitting corrosion in aluminum alloy 2024-T3 in real time. These observations complemented more detailed information about composition and distribution of constituent particles, pre- and post-corrosion surface morphology, and the internal morphology of corrosion pits. In-situ observations provided a comprehensive view of the development of localized corrosion in real time. Results confirmed the importance of intermetallic constituent particles in promoting initiation and growth of pits in aluminum alloys. Heterogeneous distribution of these particles served to define the location and extent (or severity) of pitting. A conceptual model was proposed as a framework for continued research. The formation of occluded cells under corrosion product domes over severe pits was observed. This formation will be incorporated into an overall reconsideration and modeling of the processes of pitting corrosion of aluminum alloys.},
doi = {10.5006/1.3284873},
journal = {Corrosion},
number = 6,
volume = 54,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 1998},
month = {Mon Jun 01 00:00:00 EDT 1998}
}