Oxidation Behavior of CoCrFeMnNi High-Entropy Alloy Fabricated by Selective Laser Melting

Jia, Xiquan; Xu, Zhenlin; He, Yizhu; Zhou, Shengxuan; Du, Xinxin; Zhang, Hui; Mao, Aiqin

doi:10.1007/s12540-023-01415-9

Cited by 11 publications

(2 citation statements)

References 67 publications

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“…FCC structure peaks were obtained for the (111), ( 200), ( 220), (311), and (222) planes of all CoCrFeMnNi HEA specimens produced at various build orientations. The planes obtained with all build orientations were in agreement with other literature studies for the CoCrFeMnNi structure [28,29,50]. There was no phase change in the CoCrFeMnNi alloy produced at various build orientations only the FCC phase structure was observed.…”

Section: Structural Properties Of the Specimens Produced Using Differ...supporting

confidence: 90%

“…They observed that successive laser tracks applied multiple thermomechanical processes, resulting in an augmentation of dislocation density and cell thickness without compromising the cellular morphology or increasing misorientation of cell walls. Jia et al [29] stated that the microstructure of the CoCrFeMnNi HEA samples they produced with SLM during the build phase consists of layer-by-layer overlapping melt pools, columnar grains, and cellular structures. They stated that the melt pool boundaries and cellular structures disappeared after the annealing process they applied to the samples, and they observed no significant compositional separation in the structure before and after annealing.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Selective Laser Melting Process Parameters on Structural, Mechanical, Tribological and Corrosion Properties of CoCrFeMnNi High Entropy Alloy

Bulut,

Yıldız,

Varol

et al. 2024

Met. Mater. Int.

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The structural, tribological, mechanical, corrosion, and other properties of materials produced by laser-based powder bed fusion additive manufacturing methods are significantly affected by production parameters and strategies. Therefore, understanding and controlling the effects of the parameters used in the manufacturing process on the material properties is extremely important for determining optimum production conditions and for saving time and materials. This study aimed to determine the optimal laser parameter values for CoCrFeMnNi high-entropy alloy powders using the selective laser melting (SLM) method. The layer thickness was kept constant during experimentation. 5 different laser powers and 10 varying laser scanning speeds were tested, with hatch spacing from 30 to 90%. After determining the optimal laser parameters for SLM, prismatic samples were fabricated in different build orientations (0°, 45°, and 90°), and subsequently, their structural, mechanical, tribological, and corrosion properties were compared. Melt pool morphology could not be obtained at 20—40 and 60W laser powers and at all laser scanning speeds used at these laser powers. At 100 W laser power, 600 mm/s laser scanning speed, and 70% hatch spacing parameters, an ultimate tensile stress of 550 MPa and elongation of 48% were obtained. Among the samples produced in different build orientations, the sample produced with a 0° build orientation exhibited the highest relative density (99.94%), the highest microhardness (201.2 HV0.1), the lowest friction coefficient (0.7025), and the lowest wear and corrosion rates (0.7875 mpy). Additionally, SLM parameters were evaluated to have a significant impact on the performance of all properties of the samples. Graphical Abstract

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Section: Structural Properties Of the Specimens Produced Using Differ...supporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effects of Selective Laser Melting Process Parameters on Structural, Mechanical, Tribological and Corrosion Properties of CoCrFeMnNi High Entropy Alloy

Bulut,

Yıldız,

Varol

et al. 2024

Met. Mater. Int.

View full text Add to dashboard Cite

show abstract

Influence of eutectic-Si in as-cast and fibrous-eutectic-Si in LPBF-processed AlSi10Mg alloys on wear and corrosion behaviors treated with direct aging route

Sathishkumar,

Soundararajan,

Sivasankaran

et al. 2023

J Mater Sci

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Selective Laser Melting of a High-Strength, Miniature, Soft Magnetic Device with Complex Geometry

Xue,

Yang,

et al. 2024

Met. Mater. Int.

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Oxidation Behavior of CoCrFeMnNi High-Entropy Alloy Fabricated by Selective Laser Melting

Cited by 11 publications

References 67 publications

Effects of Selective Laser Melting Process Parameters on Structural, Mechanical, Tribological and Corrosion Properties of CoCrFeMnNi High Entropy Alloy

Effects of Selective Laser Melting Process Parameters on Structural, Mechanical, Tribological and Corrosion Properties of CoCrFeMnNi High Entropy Alloy

Influence of eutectic-Si in as-cast and fibrous-eutectic-Si in LPBF-processed AlSi10Mg alloys on wear and corrosion behaviors treated with direct aging route

Selective Laser Melting of a High-Strength, Miniature, Soft Magnetic Device with Complex Geometry

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