Hydrogen-induced brittle fracture in nickel based alloy 82 weld metal
Source abstract
Abstract
Alloy 82 weld metal is sensitive to hydrogen assisted fracture and low-temperature crack propagation. Novel ex-situ and in-situ mechanical testing, and hydrogen charging techniques were combined with post-test fractography to investigate this effect. Electrolytic hydrogen charging followed by mechanical testing confirmed a reduction in the elongation to failure and fracture strength. The reduction in mechanical behaviour correlated with the transition from ductile to inter-granular (IG), inter-dendritic (ID), and cleavage-type brittle fracture modes. In-situ low temperature crack propagation testing at 54°C confirmed the presence of brittle inter-granular fracture as a result of hydrogen absorbed during exposure to the aqueous test environment.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Non-Destructive Testing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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