The influence of molybdenum on stress corrosion in Ultra Low Carbon Steels with copper addition

• Autorzy: Bogucki, R. , Mazur, М. , Pytel, S.
• Języki publikacji: EN

Abstrakty

EN

The influence of molybdenum content on the process of stress corrosion of ultra-low carbon structural steels with the addition of copper HSLA (High Strength Low Alloy) was analyzed. The study was conducted for steels after heat treatment consisting of quenching and following tempering at 600°C and it was obtained microstructure of the tempered martensite laths with copper precipitates and the phase Laves Fe2Mo type. It was found strong influence of Laves phase precipitate on the grain boundaries of retained austenite on rate and development of stress corrosion processes. The lowest corrosion resistance was obtained for W3 steel characterized by high contents of molybdenum (2.94% Mo) which should be connected with the intensity precipitate processes of Fe2Mo phase. For steels W1 and W2 which contents molybdenum equals 1.02% and 1.88%, respectively were obtained similar courses of corrosive cracking.

Słowa kluczowe

PL

korozja naprężeniowa; faza Lavesa; obróbka cieplna; energia uderzenia; HSLA

EN

stress corrosion; Laves phase; heat treatment; impact energy; HSLA

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 3 spec.
• Strony: 219--224
• Opis fizyczny: Bibliogr. 4 poz., il., rys., tab., wykr.

Twórcy

autor

Bogucki, R.

• Cracow University of Technology, Institute of Materials Science, Al. Jana Pawła II 37, 31-864 Kraków, Poland,

autor

Mazur, М.

• Cracow University of Technology, Institute of Materials Science, Al. Jana Pawła II 37, 31-864 Kraków, Poland

autor

Pytel, S.

• Cracow University of Technology, Institute of Materials Science, Al. Jana Pawła II 37, 31-864 Kraków, Poland

Bibliografia

• [1] A. Ghosh, S. Chatterjee: Characterization of precipitates in an ultra low carbon Cu bearing high strength steel: A TEM study, Materials Characterization 55 (2005) 298– 306.
• [2] A. Ghosh, S. Chatterjee: Ageing behavior of a Cu-bearing ultrahigh strength steel; Materials Science and Engineering A 486 (2008) 152–157.
• [3] S. Sivaprasad, S. Tarafder, V.R. Ranganath, M. Tarafder, K.K. Ray: Corrosion fatigue crack growth behavior of naval steels Corrosion Science 48 (2006) 1996–2013.
• [4] R. Rožnovskă, V. Vodărek, A. Korčăk, M. Tvrdŷ: The effect of heat treatment on microstructure and properties of a 13Cr6Ni2,5Mo supermartensitic steel, Rada Hutnika Vol. 1, 2005, p. 1241.