Simultaneous enhancement of strength and hydrogen embrittlement resistance of laser-powder bed fusion maraging steel via long-term low-temperature aging
Source abstract
Abstract
This study reported an effective strategy for simultaneously enhancing the strength and hydrogen embrittlement resistance of laser-powder bed fusion( L -PBF) 18Ni300 maraging steel through a long-term low-temperature aging treatment (LTA). The beneficial roles of LTA are: (i) LTA produced a multi-scale and multi-dimensional hydrogen trap network composed of dispersed ω nanoprecipitates and dense cellular structures, which strongly hindered hydrogen enrichment at grain boundaries, thereby inhibiting hydrogen-enhanced decohesion. (ii) High-density ω precipitates not only enhanced the strength, but also affected H-dislocation interactions, thereby hindering hydrogen-enhanced localized plasticity. (iii) LTA eliminated the formation of austenite aggregation zone, reducing the additional risk of cracking.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Additive Manufacturing Materials and Processes · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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