Influencia de la microestructura en el comportamiento a fatiga de aceros inoxidables austeníticos con alto contenido en molibdeno

J. Oñoro; R. Gamboa; C. Ranninger

doi:10.3989/revmetalm.2006.v42.i1.1

Microstructure influence on fatigue behaviour of austenitic stainless steels with high molybdenum content

Authors

J. Oñoro Dpto. de Ingeniería y Ciencia de los Materiales, ETSI Industriales. Universidad Politécnica de Madrid
R. Gamboa Dpto. de Ingeniería y Ciencia de los Materiales, ETSI Industriales. Universidad Politécnica de Madrid
C. Ranninger Dpto. de Ingeniería y Ciencia de los Materiales, ETSI Industriales. Universidad Politécnica de Madrid

DOI:

https://doi.org/10.3989/revmetalm.2006.v42.i1.1

Keywords:

Austenitic stainless steel, 317LN. Fatigue, Corrosion-fatigue

Abstract

Austenitic stainless steels with molybdenum present high mechanical properties and corrosion resistance to aggressive environments. These steels have been used to tank and vessel components for high corrosive liquids as phosphoric, nitric and sulphuric acids. These materials with low carbon and nitrogen addition have been proposed candidates as structural materials for the international thermonuclear experimental reactor (ITER) in-vessel components. Molybdenum addition in austenitic stainless steel improves mechanical and corrosion properties, but with it can produce the presence of nitrogen microstructure modifications by presence or precipitation of second phases. This paper summarises the fatigue and corrosion fatigue behaviour of two 317LN stainless steels with different microstructure. Fully austenitic steel microstructure show better fatigue, corrosion fatigue resistance and better ductility than austenitic steel with delta ferrite microstructure, mainly at low stresses.

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References

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Published

2006-02-28

How to Cite

Oñoro, J., Gamboa, R., & Ranninger, C. (2006). Microstructure influence on fatigue behaviour of austenitic stainless steels with high molybdenum content. Revista De Metalurgia, 42(1), 4–10. https://doi.org/10.3989/revmetalm.2006.v42.i1.1

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Issue

Vol. 42 No. 1 (2006)

Section

Articles

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