Electrochemical Characterization of Low Temperature Thermal Aging Embrittlement of Stainless Steel 304L Weld

Abstract:

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Thermal aging embrittlement of type 304L stainless steel weld is investigated on the basis of changes in microstructure, microhardness and electrochemical behavior after aging up to 20,000 h at 335, 365 and 400 °C. Spinodal decomposition and G-phase precipitation in the ferrite was observed after thermal aging. Aging led to increase in the hardness of ferrite phase while there was no change in the hardness of austenite. The changes in electrochemical behavior due to aging were studied using double loop electrochemical potentiokinetic reactivation (DL-EPR) test. Aging led to increase in the DL-EPR value which is attributed to Cr depletion in the ferrite phase.

Info:

Periodical:

Materials Science Forum (Volumes 702-703)

Edited by:

Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar

Pages:

689-692

DOI:

10.4028/www.scientific.net/MSF.702-703.689

Citation:

K. Chandra et al., "Electrochemical Characterization of Low Temperature Thermal Aging Embrittlement of Stainless Steel 304L Weld", Materials Science Forum, Vols. 702-703, pp. 689-692, 2012

Online since:

December 2011

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Price:

$35.00

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