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ASSESSMENT OF THE CORROSION BEHAVIOR OF SS 304L IN NITRIC-ACID ENVIRONMENTS - AN ALTERNATIVE APPROACH

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Title ASSESSMENT OF THE CORROSION BEHAVIOR OF SS 304L IN NITRIC-ACID ENVIRONMENTS - AN ALTERNATIVE APPROACH
 
Creator KAIN, V
PRASAD, RC
DE, KK
GADIYAR, HS
 
Subject austenitic stainless-steels
intergranular corrosion
sensitization
resistance
austenitic stainless steel
intergranular corrosion (igc)
sensitization
presensitization heat treatment
rapid screening test (practice a)
huey test (practice c)
 
Description Stainless steel (SS) 304L is widely used as a construction material in industries requiring corrosion resistance in nitric acid environments. Representative samples from 20 heats of SS 304L products were subjected to a testing procedure consisting of testing as per the rapid screening test (Practice A) and the Huey test (Practice C) of ASTM A 262, Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels. The presensitization heat treatment of 677 degrees C for 1 h and the modified heat treatment of 677 degrees C for 20 min were used for characterizing the microstructures in Practice A, whereas only the former presensitization heat treatment was used for Practice C. The percent duality after the two heat treatments has been correlated with the corrosion rate obtained in Practice C. A chemical composition based parameter, Cr effective = [% Cr - 0.18 (%Ni) - 100 (%C)], was calculated for all the heats and correlated with the percent duality after the two heat treatments as well as the corrosion rate in Practice C. It is observed that the SS 304L heats with Cr effective >14.0 and
 
Publisher AMER SOC TESTING MATERIALS
 
Date 2011-07-17T07:29:07Z
2011-12-26T12:50:10Z
2011-12-27T05:36:15Z
2011-07-17T07:29:07Z
2011-12-26T12:50:10Z
2011-12-27T05:36:15Z
1995
 
Type Article
 
Identifier JOURNAL OF TESTING AND EVALUATION, 23(1), 50-54
0090-3973
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4655
http://hdl.handle.net/10054/4655
 
Language en