Dislocation Structures of Duplex Stainless Steel in Uniaxial and Biaxial Cyclic Loading


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Austenitic-ferritic duplex stainless steel has been subjected to uniaxial and biaxial nonproportional cyclic loading with the same equivalent strain amplitude. The dislocation structures in specimens fatigued to fracture using both types of loadings were studied and compared. Uniaxial cyclic loading, both in austenitic and in ferritic grains, produces simple structures due to activation of predominantly one slip system. Non-proportional cyclic loading results in formation of cell and wall structures and thus in higher stress response of the material.



Edited by:

Jaroslav Pokluda




M. Petrenec et al., "Dislocation Structures of Duplex Stainless Steel in Uniaxial and Biaxial Cyclic Loading", Materials Science Forum, Vol. 482, pp. 179-182, 2005

Online since:

April 2005




[1] Polák J.: Cyclic Plasticity and Low Cycle Fatigue Life of Metals (Elsevier, Amsterdam, 1991).

[2] M. Klesnil, P. Lukáš: Fatigue of Metallic Materials (Elsevier, Amsterdam, 1992).

[3] Polák J.: Cyclic Deformation, Crack Initiation, and Low Cycle Fatigue, in Comprehensive Structural Integrity, I. Milne, R. O. Ritchie, B. Karihaloo, Eds. Vol. 4, Elsevier, Amsterdam, 2003, pp.1-39.

DOI: https://doi.org/10.1016/b0-08-043749-4/04060-x

[4] D. Bettge, W. Osterle, J Ziebs: Scripta Met. Mater. Vol. 32 (1995), p.1601.

[5] L. Xiao, Z. -B. Kuang: Acta Mater. Vol. 4 (1996), p.3059.

[6] T. Kruml, J. Polák, K. Obrtlík and S. Degallaix: Acta Mater. Vol. 45 (1997), p.5145.

[7] V. Aubin, P. Quaegebeur, S. Degallaix: Mater. Sci. Eng. Vol. A346 (2003), p.208.