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Stress Corrosion Cracking Study of Aluminum Alloys Using Electrochemical Noise Analysis

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Title Stress Corrosion Cracking Study of Aluminum Alloys Using Electrochemical Noise Analysis
 
Creator RATHOD, RC
SAPATE, SG
RAMAN, R
RATHOD, WS
 
Subject aluminum alloys
electrochemical noise
hurst exponent
stress corrosion cracking
INDUCED HYDROGEN EMBRITTLEMENT
ACID-BATTERY COMPONENTS
MECHANICAL-PROPERTIES
MICROSTRUCTURE
RESISTANCE
BEHAVIOR
STEEL
 
Description Stress corrosion cracking studies of aluminum alloys AA2219, AA8090, and AA5456 in heat-treated and non heat-treated condition were carried out using electrochemical noise technique with various applied stresses. Electrochemical noise time series data (corrosion potential vs. time) was obtained for the stressed tensile specimens in 3.5% NaCl aqueous solution at room temperature (27 degrees C). The values of drop in corrosion potential, total corrosion potential, mean corrosion potential, and hydrogen overpotential were evaluated from corrosion potential versus time series data. The electrochemical noise time series data was further analyzed with rescaled range (R/S) analysis proposed by Hurst to obtain the Hurst exponent. According to the results, higher values of the Hurst exponents with increased applied stresses showed more susceptibility to stress corrosion cracking as confirmed in case of alloy AA 2219 and AA8090.
 
Publisher SPRINGER
 
Date 2014-10-15T12:01:21Z
2014-10-15T12:01:21Z
2013
 
Type Article
 
Identifier JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 22(12)3801-3809
1059-9495
1544-1024
http://dx.doi.org/10.1007/s11665-013-0705-x
http://dspace.library.iitb.ac.in/jspui/handle/100/14852
 
Language en