Journal ArticleDOI
Effect of Heat Input and Microstructure on Pitting Corrosion in AISI 316L Submerged Arc Welds
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In this paper, the pitting resistance of AISI 316L stainless steel (SS) weld metal in the as-welded and stress-relieved conditions was evaluated as a function of heat input.Abstract:
The pitting resistance of AISI 316L stainless steel (SS) weld metal in the as-welded and stress-relieved conditions was evaluated as a function of heat input. The results obtained indicated a decrease in the value of critical pitting potential in acidic chloride medium as the heat input was increased. However, on stress-relief heat treatment, the critical pitting potential remained unchanged with varying heat input, though its magnitude was much lower than that of the as-welded alloy. The deterioration in the pitting resistance on increasing heat input is discussed on the basis of enhanced segregation of solute elements like chromium and molybdenum to delta-ferrite and the presence of M23C6 carbides at the austenite/ferrite interface.read more
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Influence of welding processes on microstructure and mechanical properties of dissimilar austenitic-ferritic stainless steel welds
TL;DR: In this paper, the influence of the welding process on microstructure and mechanical properties of AISI 304-ferritic (AISI 430) stainless steel has been taken up.
Journal ArticleDOI
Effect of ferrite transformation on the tensile and stress corrosion properties of type 316 L stainless steel weld metal thermally aged at 873 K
TL;DR: In this article, the effect of microstructural changes, due to transformation of delta ferrite, on the associated variations that take place in the tensile and stress corrosion properties of type 316 L stainless steel weld deposits when subjected to postweld heat treatment at 873 K for prolonged periods (up to 2000 hours).
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Effectiveness of an intercritical heat-treatment on localized corrosion resistance at the microstructural boundaries of medium-carbon steels
TL;DR: The localized corrosion resistance at the microstructural boundaries of AISI 1045 carbon steels was accessed in this article, where regions with low corrosion potentials were found at the pearlite colony boundary in the ferrite-pearlite structure and the prior austenite grain boundary in martensite structure, and phosphorus was segregated in these regions.
Journal ArticleDOI
Assessment of intergranular corrosion in AISI Type 316L stainless steel weldments
H. Shaikh,B. P. C. Rao,S. Gupta,Rani P. George,S. Venugopal,B. Sasi,T. Jayakumar,H. S. Khatak +7 more
TL;DR: In this article, the applicability of various techniques for the assessment and quantification of sensitisation in AISI Type 316L welds was discussed, and the possibility of using eddy current testing (ECT) to detect sensitisation and intergranular corrosion was also assessed.
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Effect of metallurgical variables on the stress corrosion crack growth behaviour of AISI type 316LN stainless steel
TL;DR: In this paper, a mill-annealed AISI type 316LN stainless steels, received from two different sources (one indigenous and the other foreign) were tested for stress corrosion cracking (SCC) resistance in a boiling acidified environment of NaCl.