Hydrogen embrittlement susceptibility of additively manufactured 316L stainless steel: Influence of post-processing, printing direction, temperature and pre-straining

Álvarez, G.; Harris, Z.; Wada, K.; Rodríguez, C.; Martínez-Pañeda, E.

doi:10.1016/j.addma.2023.103834

Cited by 4 publications

(3 citation statements)

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“…The reduction of porosity by HIP post-processing has a significant role in improving fatigue behavior, but its influence on HE is not fully established. A ́lvarez et al 591 found that while HIP enhanced HE resistance more than annealing, it was difficult to isolate the effects of porosity reduction from the broader microstructural changes HIP induced. Due to the longer exposure to 1100 °C, HIP resulted in a more evenly distributed and coarser grained structure compared to annealing.…”

Section: Chemical Reviewsmentioning

confidence: 99%

“…Nonetheless, it is recognized that AM processes typically foster the epitaxial growth of columnar grains along the build direction, leading to anisotropy and directionality which have an influence on H diffusion and HE. A ́lvarez et al 591 conducted an extensive study on the impact of printing orientation on HE susceptibility in 316L stainless steel fabricated through L-PBF. They specifically looked at the material in its as-built state and after various thermomechanical post-processes.…”

Section: Bcc Iron and Steelsmentioning

confidence: 99%

“…For example, increasing Ni content in 316L powder significantly improved the HE resistance of an L-PBFed stainless steel, which was attributed to the effect of Ni as a strong austenite stabilizer. 583 A ́lvarez et al 591 observed that strain-induced martensite transformation was suppressed in a L-PFBed 316L stainless steel as compared to the wrought version. This difference in austenite stability between AMed and wrought specimens is attributed to their distinct compositions, as evidenced by the lower Md30 temperature in the former.…”

Section: Chemical Reviewsmentioning

confidence: 99%

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Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

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Hydrogen is considered a clean and efficient energy carrier crucial for shaping the net-zero future. Large-scale production, transportation, storage, and use of green hydrogen are expected to be undertaken in the coming decades. As the smallest element in the universe, however, hydrogen can adsorb on, diffuse into, and interact with many metallic materials, degrading their mechanical properties. This multifaceted phenomenon is generically categorized as hydrogen embrittlement (HE). HE is one of the most complex material problems that arises as an outcome of the intricate interplay across specific spatial and temporal scales between the mechanical driving force and the material resistance fingerprinted by the microstructures and subsequently weakened by the presence of hydrogen. Based on recent developments in the field as well as our collective understanding, this Review is devoted to treating HE as a whole and providing a constructive and systematic discussion on hydrogen entry, diffusion, trapping, hydrogen–microstructure interaction mechanisms, and consequences of HE in steels, nickel alloys, and aluminum alloys used for energy transport and storage. HE in emerging material systems, such as high entropy alloys and additively manufactured materials, is also discussed. Priority has been particularly given to these less understood aspects. Combining perspectives of materials chemistry, materials science, mechanics, and artificial intelligence, this Review aspires to present a comprehensive and impartial viewpoint on the existing knowledge and conclude with our forecasts of various paths forward meant to fuel the exploration of future research regarding hydrogen-induced material challenges.

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Section: Chemical Reviewsmentioning

confidence: 99%

Section: Bcc Iron and Steelsmentioning

confidence: 99%