October 10, 2025

Mechanistic Understanding Based on Microstructure Characterization of 316L Stainless Steel Fatigue Specimens Tested in EU INCEFA-SCALE Project

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The exposure to a PWR environment decreases low cycle fatigue lifetime and accelerates fatigue crack growth in 316L stainless steel.
Post-mortem characterization reveals the influence of hydrogen on fatigue crack growth and LCF behavior under different loading parameters.
Investigations identified that periodic underload and overload both reduce fatigue lifetime and accelerate crack initiation compared to constant amplitude loading.
The study highlights that loading waveform significantly affects stress states, plastic deformation localization, and shear band formation.

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Project evaluates low cycle fatigue behavior in 316L stainless steel under varying loading conditions, suggesting significant environmental impacts.

Que et al. (2025) studied this question.

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Project evaluates low cycle fatigue behavior in 316L stainless steel under varying loading conditions, suggesting significant environmental impacts.