Abstract
Stress–strain behaviour in tension and in torsion was studied in ferrite–pearlite and ferrite–bainite microstructures of C–Mn steel. The fatigue tests were performed under reverse torsional loading on hour-glass shape specimens. The cyclic plasticity in torsion was found at about 37% of the monotonic yield stress in both ferrite–pearlite and ferrite–bainite microstructures. The ferrite phase in the direction of maximum shear stress was the preferable site for crack nucleation. The ferrite–bainite microstructure showed better fatigue properties than the ferrite–pearlite microstructure.
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HUSSAIN, K., DE LOS RIOS, R.R. Microstructural effect on tensile and fatigue behaviour of C–Mn steel. Journal of Materials Science 32, 3565–3569 (1997). https://doi.org/10.1023/A:1018661809487
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DOI: https://doi.org/10.1023/A:1018661809487