Mechanical Properties and Corrosion Behaviors in 3.5% NaCl Solution of Grade-A and Dual-Phase Steels Welded by FCAW

Abstract

Abstract:The first aim of this study is to demonstrate the transformation of Grade-A steel

Electrochemical Noise Measurements of Advanced High-Strength Steels in Different Solutions

“…However, a morphology made up of islands of martensite in continuous ferrite matrix proves to be more corrosion-resistant compared to morphologies such as ferrite-chain martensite, uniform fine fibrous ferrite-martensite and uniform fibrous ferrite-martensite with an almost similar amount of martensite in the structure. The corrosion resistance of dual-phase steel increases depending upon the increase in the volume fraction of martensite, and in particular of its morphological features [10]. In this reference, it is reported that the corrosion resistance of the DP steel increases with intercritical annealing tempering heat treatment.…”

“…The corrosion resistance of the DP steel increases with intercritical annealing tempering heat treatment. In addition, it has been reported that the dual-phase steel tempered at higher temperature of 800 • C (martensite island morphology in the ferrite matrix), had better corrosion resistance properties than the dual-phase steel tempered at lower temperature of 730 • C, which consists of fibrous ferrite and martensite [10]. Abedini et al [11] mentioned that an increase in martensite amount does not favor the corrosion rate of DP steels.…”