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Metals 2017, 7(2), 39; doi:10.3390/met7020039

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

1
Faculty of Mechanical Engineering, University Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
2
Institute of technology, Middle Technical University, Foundation of Technical Education, Baghdad – Alzafaranya 10074, Iraq
*
Author to whom correspondence should be addressed.
Received: 19 November 2016 / Accepted: 18 January 2017 / Published: 30 January 2017
(This article belongs to the Special Issue Alloy Steels)
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Abstract

The effects of input heat of different welding processes on the microstructure, corrosion, and mechanical characteristics of welded duplex stainless steel (DSS) are reviewed. Austenitic stainless steel (ASS) is welded using low-heat inputs. However, owing to differences in the physical metallurgy between ASS and DSS, low-heat inputs should be avoided for DSS. This review highlights the differences in solidification mode and transformation characteristics between ASS and DSS with regard to the heat input in welding processes. Specifically, many studies about the effects of heat energy input in welding process on the pitting corrosion, intergranular stress, stresscorrosion cracking, and mechanical properties of weldments of DSS are reviewed. View Full-Text
Keywords: duplex stainless steel; heat input; pitting corrosion; intergranular stress; stress corrosion cracking; mechanical properties duplex stainless steel; heat input; pitting corrosion; intergranular stress; stress corrosion cracking; mechanical properties
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Mohammed, G.R.; Ishak, M.; Aqida, S.N.; Abdulhadi, H.A. Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review. Metals 2017, 7, 39.

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