Research on hydrogen embrittlement behavior of L-PBF 18Ni(300) maraging steel by experiments and numerical simulations

Mei, Xingyuan; Li, Qiao

doi:10.1016/j.actamat.2023.119141

Cited by 13 publications

(4 citation statements)

References 42 publications

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“…The lower energy peak was associated with elastic stress fields or dislocation cores, while the higher energy peak (62 kJ/mol) was linked to dislocation cell walls, a feature less prominent in cold-rolled specimens. In contrast, binding energy at cell walls was characterized by TDS to be around 27 kJ/mol for a L-PBFed 18Ni(300) maraging steel . In that study, cell walls were formed of dislocation tangles and Ni segregation, which promoted reversed austenite near the cell walls.…”

Section: Knowledge Base About Hementioning

confidence: 87%

“…In contrast, binding energy at cell walls was characterized by TDS to be around 27 kJ/mol for a L-PBFed 18Ni(300) maraging steel. 573 In that study, cell walls were formed of dislocation tangles and Ni segregation, which promoted reversed austenite near the cell walls. Zhou et al 586 reported that heat treatment on L-PBFed 18Ni(300) maraging steel, which removed cellular structures, and consequently enhanced H diffusion by reducing trapping and increased HE susceptibility.…”

Section: Bcc Iron and Steelsmentioning

confidence: 88%

“…steel after various aging treatments. 573 Precipitates formed at higher aging temperatures were found to have a higher H binding energy, as characterized by TDS. However, the precipitate size thus the interfacial area of matrix−precipitate was reduced at higher aging temperatures, resulting in lower trap densities.…”

Section: Bcc Iron and Steelsmentioning

confidence: 95%

“…The interaction between precipitates and H trapping, as well as crack initiation, is particularly important. Mei et al studied H trapping in L-PBFed 18Ni-300 maraging steel after various aging treatments . Precipitates formed at higher aging temperatures were found to have a higher H binding energy, as characterized by TDS.…”

Section: Knowledge Base About Hementioning

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: Knowledge Base About Hementioning

confidence: 87%

Section: Bcc Iron and Steelsmentioning

confidence: 88%

Section: Bcc Iron and Steelsmentioning

confidence: 95%

Section: Knowledge Base About Hementioning

confidence: 99%

See 2 more Smart Citations

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

Yu,

Díaz,

et al. 2024

Chem. Rev.

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Laser Powder Bed Fusion and Heat Treatment of the Martensitic Age‐Hardenable Steel (1.2709)

Solanki,

Shah,

Zinn

et al. 2024

steel research int.

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The primary objective of this study is to clarify the fundamental question of whether, in principle, it is possible to dispense with a prior solution annealing process in favor of a direct aging heat treatment for specimens of maraging stainless steel grade X3NiCoMoTi18‐9‐5 (1.2709) produced by laser powder bed fusion (LPBF). The waiver of a solution annealing process would significantly increase the process efficiency and thus support a sustainable and resource‐friendly production of such components. Therefore, the hardness, microstructure, and the present phases of specimens in as‐built + aged condition (AB + A) and solution‐annealed + aged (SOL + A) are examined during this study. Initially, an extended parameter study is performed using a Renishaw AM 250 LPBF system equipped with a pulsed mode laser system to achieve the highest possible apparent density. As test specimens, small cubes are produced for parameter study and are analyzed for porosity by means of optical microscopy. To investigate the relationship between microstructure and hardness in different material states, one series of specimens is aged directly after LPBF processing in the as‐built state (AB + A). For comparison, the other series was solution annealed at 820 °C for 60 min, quenched in water and then aged (SOL + A). A maximum hardness value of 614 HV1.0 is achieved for specimen aged at 490 °C for 120 min in as built condition (AB + A), while 624 HV1.0 was measured for specimen aged at 490 °C for 180 min in conventionally solution annealed + aged (SOL + A) condition. Significant austenite reversion is not observed at aging temperature of 490 °C in both cases. Aging of specimens at temperatures of 540 and 600 °C resulted in reduction of specimen hardness due to higher percentage of austenite reversion. No significant difference between the hardness values of AB + A and SOL + A specimens is observed. It can therefore be concluded that, in principle, conventional solution annealing and ageing can be dispensed with in favor of direct aging. However, as the results are based on small sized specimens, further investigations into the scalability are needed.

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Nitride coatings for environmental barriers: the key microscopic mechanisms and momentous applications of first-principles calculations

He,

Liu,

Zhou

et al. 2024

Surf. Sci. Tech.

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Protective nitride coatings are widely used in various industrial fields due to their exceptional mechanical, structural, and chemical stabilities under various harsh environments. Many nitride coatings have the inherent barrier function against the attack of environmental agents, making them splendid materials for, e.g., hydrogen permeation barriers, high-temperature-environment barriers, and tribocorrosion coatings. However, the long-term contact with aggressive environments may still result in the degradation of these coatings, where many processes occuring on various atomistic microstructures (e.g., surfaces, vacancies, grain boundaries, and coating/substrate interfaces) usually play the key roles. Here, we make a timely review on the microscopic mechanisms associated with the interactions between various microstructural entities and environmental agents, for which the first-principles calculations will be powerful in quantitatively revealing the essential interatomic bondings and thermodynamic/kinetic trends therein. Many successful application cases and possible future directions of first-principles calculations for these three kinds of nitride coatings are discussed here, which can shed much light on more optimization ways towards superior and durable nitride coatings through precise chemical tuning and structural design in the future.

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Research on hydrogen embrittlement behavior of L-PBF 18Ni(300) maraging steel by experiments and numerical simulations

Cited by 13 publications

References 42 publications

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

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

Laser Powder Bed Fusion and Heat Treatment of the Martensitic Age‐Hardenable Steel (1.2709)

Nitride coatings for environmental barriers: the key microscopic mechanisms and momentous applications of first-principles calculations

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