Abstract
In the present work, the mechanical properties and the microstructural evolution of a duplex stainless steel in the as-cast and wrought conditions during deformation under hot-working conditions have been studied. Hot torsion tests, at strain rates of \(\dot \varepsilon \) = 1 s−1, have been carried out using prepolished samples on which surface parallel scratches have been practiced. The observation of the surface of the samples shows a large displacement of the scratches produced by two different mechanisms, sliding on the δ/γ interface, and shearing of the ferrite. The displacements in the as-cast condition have been found to concentrate in a reduced set of ferrite/austenite interfaces leading to the formation of cracks along them. In the wrought material, the distribution of the sliding is more homogeneous over all the ferrite/austenite interfaces, and no damage has been produced. These behavioral differences between both materials have been related in the present work, to the characteristics of the corresponding microstructures, to the spatial phase distribution, and to the nature of the ferrite/austenite interface, among others.
Similar content being viewed by others
References
A. Iza-Mendia, A. Piñol-Juez, I. Gutiérrez, and J.J. Urcola: Metall. Mater. Trans. A, 1998, vol. 29A, pp. 2975–86.
A. Iza-Mendia, A. Piñol-Juez, I. Gutiérrez, and J.J. Urcola: Proc. CMMC 96, M. Fuentes, J.M. Martínez-Esnaola, and A.M. Daniel, eds., Trans Tech Publications, Aedermanusdorf, Switzerland, 1997, Part 2, pp. 1033–40.
A. Piñol-Juez, A. Iza-Mendia, I. Gutiérrez, and J.J. Urcola: Proc. CMMC 96, M. Fuentes, J.M. Martínez-Esnaola, and A.M. Daniel, eds., Trans Tech Publication, Aedermannsdorf, Switzerland, 1997, Part 2, pp. 1025–32.
T.H. Alden: Acta Metall., 1967, vol. 15, pp. 469–80.
F.E. Al-Jouni and C.M. Sellars: Deformation of Multi-Phase and Particle Containing Materials, Risø Conf., B. Sørensen, N. Hansen, A. Horsewell, T. Leffers, and H. Lilholt, eds., Risø National Laboratory, Roskilde, Denmark, 1983, pp. 131–37.
A. Iza-Mendia, A. Piñol-Juez, and I. Gutiérrez: Rev. Metal. CENIM, 1998, vol. 34, pp. 291–95.
L.E. Murr: Interfacial Phenomena in Metals and Alloys, Addison-Wesley Publishing Company, London, 1975, pp. 322–34.
R.L. Bell: Interfaces Conf. Melbourne 1969, Review Papers and Abstracts of Research Papers, R.C. Gifkins, eds., AIM, Sydney, 1969, pp. 115–37.
O.D. Sherby and J. Wadsworth: in Deformation, Processing, and Structure, George Krauss, ed., ASM Materials Science Seminar, Metals Park, OH, 1984, pp. 355–89.
D.A. Porter and K.E. Easterling: Phase Transformation in Metals and Alloys, Van Nostrand Reinhold Company, New York, NY, 1981, pp. 142–50.
T. Chandra, D.P. Dunne, and P. Campbell: Proc. ICSMA 7, H.J. McQueen, J.O. Bailon, J.I. Dickson, J.J. Jonas, and M.G. Akben, Pergamon Press, Oxford, United Kingdom, 1986, pp. 947–52.
J.H. Bianchi and J.J. Urcola: Contract No. 7210-EC/403/932, Final Report EUR 18378 EN, European Commission, Luxembourg, 1998, pp. 55–69.
A. Piñol-Juez: Ph.D. Thesis, University of Navarra, Donostia-San Sebastián, 1999.
H.D. Solomon and T.M. Devine: Proc. Duplex Stainless Steels, R.A. Lula, ed., ASM INTERNATIONAL, Metals Park, OH, 1983, pp. 41–69.
B. Verhaeghe: Ph.D. Thesis, Institut National Polytechnique de Grenoble, Grenoble, 1995, pp. 43–53.
M. Tellaeche Reparaz, J.M. Martinez-Esnaola, and J.J. Urcola: Proc. CMMC 96, M. Fuentes, J.M. Martinez-Esnaola, and A.M. Daniel, eds., Trans Tech Publications, Aedermannsdorf, Switzerland, 1997, Part 2, pp. 1215–22.
P. Van Houtte, J. Gil Sevillano, and E. Aernoudt: Z. Metallkd., 1979, vol. 70, pp. 426–32.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Piñol-Juez, A., Iza-Mendia, A. & Gutiérrez, I. δ/γ Interface bondary sliding as a mechanism for strain accommodation during hot deformation in a duplex stainless steel. Metall Mater Trans A 31, 1671–1677 (2000). https://doi.org/10.1007/s11661-000-0177-0
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11661-000-0177-0