2024
DOI: 10.1002/srin.202400369
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Experimental and Fractographic Study of the Hydrogen‐Induced Cracking of 45CrNiMoVA Martensitic Advanced High‐Strength Steel

Yunlong Li,
Xiaodong Liu

Abstract: Hydrogen‐induced cracking (HIC) in high‐strength 45CrNiMoVA steel is investigated using smooth and notched cylindrical specimens by performing uniaxial tensile tests. Specimens with different notch geometries are used to analyze the interacting effects of the stress concentration factor and HIC micromechanism. The results show that hydrogen charging reduces the elongation at fracture and the ultimate tensile strength of smooth tensile specimens. The microscopic fracture mode changes from ductile dimples with s… Show more

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