0010-938X/$ - see front matter  2005 Elsevier Ltd. All rights reserved. doi:10.1016/j.corsci.2005.05.017 Corrosion Science 48 (2006) 1462–1482 www.elsevier.com/locate/corsci Use of eddy current testing method in detection and evaluation of sensitisation and intergranular corrosion in austenitic stainless steels H. Shaikh a,¤ , N. Sivaibharasi a , B. Sasi b , T. Anita a , R. Amirthalingam c , B.P.C. Rao b , T. Jayakumar b , H.S. Khatak a , Baldev Raj d a Corrosion Science and Technology Division, Indira Gandhi Center for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India b Division for Post Irradiation Examination and Non Destructive Testing, Indira Gandhi Center for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India c Department of Physics, Government Arts College, Cuddalore 607 001, Tamil Nadu, India d Indira Gandhi Center for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India Received 7 October 2004; accepted 23 May 2005 Available online 10 August 2005 Abstract This paper deals with the applicability of eddy current testing (ECT) technique to assess and quantify sensitisation and intergranular corrosion (IGC) in thermally aged AISI type 316 stainless steel. Chemical and electrochemical tests speciWed by ASTM A262 Practices A and E (Strauss test) and G108, and ECT, were used to quantify degree of sensitisation (DOS). The DOS was categorised based on severity of the crack after bend test in increasing order as unaVected, Wssured, cracked, and broken. The eddy current (EC) amplitude increased with increasing DOS in both the as-aged and Strauss tested conditions. The EC amplitude in as- aged condition was smaller than in Strauss tested condition. Empirical relationships were established between ECT amplitude and other DOS parameters.  2005 Elsevier Ltd. All rights reserved. * Corresponding author. Tel.: +91 4114 280121; fax: +91 4114 280081/280060/280301. E-mail address: hasan@igcar.ernet.in (H. Shaikh).