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This is a Experimental Study study.

October 10, 2025

Effect of Methane-Hydrogen Mixed Gas on Fatigue Crack Growth Characteristics of API X65 Linepipe Steels

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Fatigue crack growth in mixed gas environments shows significant variation with gas pressure levels.
Experimental data indicate that under low gas pressure, hydrogen's influence on crack growth is more pronounced.
X65 linepipe steel was subjected to gas pressures of up to 25 MPa, shedding light on material resilience.
Understanding these interactions is vital for enhancing pipeline infrastructure suited for hydrogen transport.

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Experimental analysis reveals mixed gas alters fatigue crack characteristics in steel, indicating hydrogen's effect varies with gas pressure.

Nishihara et al. (2025) studied this question.

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Experimental analysis reveals mixed gas alters fatigue crack characteristics in steel, indicating hydrogen's effect varies with gas pressure.