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Soldagem & Inspeção

versão impressa ISSN 0104-9224

Resumo

LUZ, Temístocles de Sousa; FARIAS, Jesualdo Pereira  e  FERRARESI, Valtair Antonio. Microstructural analysis and impact toughness of HAZ of ferritic stainless steel with 11%Cr. Soldag. insp. [online]. 2013, vol.18, n.3, pp.198-206. ISSN 0104-9224.  http://dx.doi.org/10.1590/S0104-92242013000300002.

Ferritic stainless steel is used in various sectors of engineering, such as in oil and gas industry, cellulose, or transport. New alloys are currently been developed to replace carbon steel in cargo transportation sector, which has led the industry to use ferritic alloys with chromium contents near 12%, increasing the mechanical and chemical properties. The use of this new class of ferritic stainless steel creates a demand concerning research in welding these steels. In this study, it is analyzed the microstructure and impact toughness of the parent metal and heat affected zone (HAZ) in a ferritic stainless steel containing 11% Cr. Good mechanical properties were observed in both regions, though there was a marked loss in the impact toughness of the HAZ compared to the base metal.

Palavras-chave : ferritic stainless steel; impact toughness; HAZ; microstructural.

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