Micro- and Macro-Approach to the Fatigue Crack Propagation in High-Strength Pearlitic Steel Wires

Jesús Toribio; B. Gonzáles; Juan Carlos Matos; F.J. Ayaso

doi:10.4028/www.scientific.net/KEM.348-349.681

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 348-349Micro- and Macro-Approach to the Fatigue Crack...

Micro- and Macro-Approach to the Fatigue Crack Propagation in High-Strength Pearlitic Steel Wires

Abstract:

This paper analyzes how the cold drawing process influences the fatigue behaviour of eutectoid steel, with special emphasis on the role of microstructural changes induced during such a manufacturing process. Fatigue cracks are transcollonial and exhibit a preference for fracturing pearlitic lamellae, with non-uniform crack opening displacement values, micro-discontinuities, branchings, bifurcations and frequent local deflections that create microstructural roughness. The net fatigue surface increases with cold drawing due to the higher angle of crack deflections.

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Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

681-684

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.681

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Online since:

September 2007

Authors:

Jesús Toribio, B. Gonzáles, Juan Carlos Matos, F.J. Ayaso

Keywords:

Cold Drawing, High Strength Steel (HSS), Paris Regime, Pearlitic Microstructure

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