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The analysis aims to identify the root causes of failure in a 42CrMo4 crankshaft.

February 2, 2026ITU Journal of Metallurgy and Materials EngineeringOpen Access

Fatigue Failure Analysis of a 42CrMo4 Crankshaft

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Analysis uncovers fatigue as the failure cause in a crankshaft, highlighting quality control needs.

The analysis aims to identify the root causes of failure in a 42CrMo4 crankshaft.
Conducted visual inspection and chemical composition analysis.
Performed hardness testing and microstructural characterization.
Used scanning electron microscopy for detailed fracture surface analysis.
Identified fatigue as the dominant mechanism of failure.
Found that non-metallic inclusions acted as stress concentrators.
Observed ductile overload features in the final fracture zone.

Qazi et al. (2026) studied this question.

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