Effect of rolling-induced microstructural modification on the hydrogen embrittlement characteristics of precipitation-strengthened Fe–Ni–Cr-based steel
Source abstract
Abstract
This study aims at understanding the effect of rolling on the hydrogen embrittlement behaviour of γʹ-precipitation-strengthened austenitic steel SUH660, with emphasis on the characteristic microstructure developed by rolling. A comparative study was carried out with reference to unrolled material under uncharged and hydrogen-charged conditions. Under uniaxial tensile loading, hydrogen charging reduced elongation in both unrolled and rolled specimens, with the reduction being more pronounced in the unrolled specimen. The total hydrogen uptake was similar in unrolled and rolled specimens. The main crack initiation site shifted from grain boundaries in the unrolled specimen to carbides in the rolled specimen. Fracture surface morphology of hydrogen-charged unrolled specimens reveals quasi-cleavage type of fracture along {111} plane, while for the rolled specimens some sites containing dimples were evident. Rolling could not improve crack initiation resistance but increased strength and resistance to hydrogen-assisted crack propagation through suppression of {111} quasi-cleavage fracture.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Material Properties and Failure Mechanisms · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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