Quantification of strain-induced martensite in 304L stainless steel in the presence of stress concentration
PEDRO PENA LEITE1; GLÁUCIO SOARES DA FONSECA1; PAULO JUNIOR FARIA BERTUCI1; MARCELO COSTA CARDOSO1; Diego Gabriel Gomes Rosa1
1 Universidade Federal Fluminense
doi:10.20906/CPS/COB-2015-0428
Resumo
The high corrosion resistance, high mechanical resistance and tenacity are some positive factors of the stainless steels. Linked primarily by iron, carbon and chromium, they can also contain other elements such as nickel and molybdenum. Among the various classifications of stainless steels, austenitic steels type will be tackled harder. The addition of nickel as an alloying element in certain quantities, causes the ferritic structure to become into austenitic, generating excellent corrosion resistance, ductility and weldability. Because they contain several advantageous features, the austenitic stainless steels are widely used in various areas, such as in the oil and gas industry, petrochemical, aeronautics, among others. This work will propose the use of 304L austenitic stainless steel as an object of study; specimens with notches were produced and tested in traction in order to observe and measure the transformation of austenite into martensite in a particular region with stress concentrators. The improvement of the mechanical resistance of the material is one of the benefits of this transformation, which is also a motive for more studies and research on this proposed topic.
Palavras-chave: Stainless Steel; Austenitic Stainless Steel; Martensitic Transformations; Strain-induced Martensite