Journal
CORROSION SCIENCE
Volume 71, Issue -, Pages 1-9Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.01.001
Keywords
Magnesium; SEM; Stress corrosion
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Stress corrosion cracking of the magnesium alloy Elektron 21 (ASTM-EV31A) and AZ91E was studied using constant load test in 0.1 M NaCl solution (saturated with Mg(OH)(2), and slow strain rate test using glycerol, distilled water and Mg(OH)(2) saturated, 0.01 M and 0.1 M NaCl solutions. Slow strain rate test indicated that EV31A was less susceptible to stress corrosion cracking than AZ91E. Under less intense loading of constant load, EV31A was found to be resistant to stress corrosion cracking. Fractography of EV31A specimens showed little evidence of hydrogen embrittlement. The superior resistance of EV31A is attributed to a more robust oxide/hydroxide layer. (C) 2013 Elsevier Ltd. All rights reserved.
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