Tempering Temperature Influence on 13Cr4Ni0.02C Steel Corrosion Resistance

AUTOR(ES)

Fernandes, Mérilin Cristina dos Santos, Nakamatsu, Sandra, Rezende, Stephania Capellari De, Maestrelli, Sylma Carvalho, Sousa, Lucíola Lucena de, Mariano, Neide Aparecida

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

13/11/2017

RESUMO

The thermal treatments employed in alloys are essential to obtaining desired microstructures and corrosion resistance properties. In this paper the low carbon martensitic steel 13Cr4Ni0.2C with different tempering temperatures was studied using potentiodynamic polarization technique in synthetic marine environment, in order to evaluate the effect of the tempering temperature on the steel corrosion resistance in an environment that simulates the conditions of use in oil and gas production. Microscopy results showed differences in the microstructure of tempered steel at low (620°C) and high (770°C) temperatures, indicating the appearance and extending of martensite laths with increasing temperature. Polarization tests showed that tempering temperature located between 620°C and 710°C indicated passive film formation and tempering temperatures of around 620 °C showed better resistance values to pitting corrosion.

Documentos Relacionados

• Efeito do revenido na corrosão localizada dos aços 13Cr4Ni0.02C e 13Cr1Ni0.15C em ambiente marinho sintético
• Efeito do tratamento térmico na caracterização microestrutural e das propriedades mecânicas de um aço inoxidável martensítico do tipo 13Cr5Ni0,02C
• Resistance to Pitting Corrosion in Steels Based on the Fe-Cr-Ni-C System
• Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
• Degeneração lipídica da córnea após trabeculectomia com mitomicina C 0,02%