Effect of Building Direction on Anisotropy of Mechanical Properties of Gh4169 Alloy Fabricated by Laser Powder Bed Fusion

Dong, Zhichao; Ouyang, Peixuan; Zhang, Shuting; Liu, Lu; Li, Hang; Wu, Yanqiang

doi:10.2139/ssrn.4229948

Cited by 2 publications

(2 citation statements)

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“…At the same time, different cooling rates and mechanical constraints in different directions cause directional variations in the GND density in the specimen. Variations in GND intensity has been reported in horizontal, vertical, and oblique planes with respect to the build directions 51 . If the energy source used during production or the temperature of the heat treatment applied after the PBF-LB process is high, it can promote recrystallization and the formation of equiaxed grains, leading to a lower intensity of the GNDs 52 .…”

Section: Resultsmentioning

confidence: 99%

The efficiency of tumble finishing as a final post-treatment for fatigue enhancement of notched laser powder bed fusion AlSi10Mg

Maleki

Bagherifard

Ünal

et al. 2023

Sci Rep

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A hybrid post-treatment combining tumble finishing as a final step after shot peening and heat treatment was developed to alleviate the adverse effects of internal and surface defects on the fatigue performance of laser powder bed fusion AlSi10Mg samples. The effects of each post-treatment were investigated individually and synergistically on microstructure, surface morphology and roughness, hardness, residual stresses, porosity, and rotating bending fatigue behavior of V-notched AlSi10Mg samples. The results reveal that tumble finishing can highly reduce surface roughness by 28 and 32% compared to the as-built and heat-treated states while inducing extra surface layer hardening and compressive residual stresses. The hybrid post-treatment of heat treatment + shot peening + tumble finishing significantly increased the fatigue life of the samples by over 500 times higher compared to the as-built series.

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Section: Resultsmentioning

confidence: 99%

The efficiency of tumble finishing as a final post-treatment for fatigue enhancement of notched laser powder bed fusion AlSi10Mg

Maleki

Bagherifard

Ünal

et al. 2023

Sci Rep

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“…In this study, modified MA6000 powders were procured from DaiShinKangup Co., Ltd (Korea) in three particle size ranges, < 25 µm, 25∼45 µm, and 45∼60 µmm, denoted as MA6000-1, MA6000-2, and MA6000-3, respectively. These powders are produced through plasma gas hybrid atomisation [18]. Prior to SPS processing, various characterisation techniques were employed to evaluate the morphology, microstructure, density, and average particle size of the powders.…”

Section: Methodsmentioning

confidence: 99%

The effects of powder size and sintering temperature on the microstructure and properties of modified MA6000 alloy produced by spark plasma sintering

Cong

Lee

et al. 2023

Powder Metallurgy

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The present study investigates the properties and microstructure evolution of MA 6000, a nickel-based alloy produced by mechanical alloying and spark plasma sintering (SPS), a powder processing technique in metallurgy. This study aims to explore the potential of MA 6000 as a high-temperature material for industrial applications. Modified MA 6000 samples of different powder sizes were sintered in a high-vacuum environment at temperatures ranging from 800 to 1100°C. At 800°C, the cohesion between powder particles was not significant, resulting in low-density samples. However, at 1000°C, the samples consisted of many fully sintered regions related to finer powder particles, while no specific morphology was observed at 1050°C. The image quality and inverse pole figure (IQ-IPF) map indicated that the grains were distributed randomly in all sintered samples, and the average distribution of grain size of samples sintered at 1050°C was larger than that of those sintered at 1000°C.

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Effect of Building Direction on Anisotropy of Mechanical Properties of Gh4169 Alloy Fabricated by Laser Powder Bed Fusion

Cited by 2 publications

References 0 publications

The efficiency of tumble finishing as a final post-treatment for fatigue enhancement of notched laser powder bed fusion AlSi10Mg

The efficiency of tumble finishing as a final post-treatment for fatigue enhancement of notched laser powder bed fusion AlSi10Mg

The effects of powder size and sintering temperature on the microstructure and properties of modified MA6000 alloy produced by spark plasma sintering

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