Parametric optimization of selective laser melting for forming Ti6Al4V samples by Taguchi method

Sun, Jianfeng; Yang, Yongqiang; Wang, Di

doi:10.1016/j.optlastec.2012.12.002

Cited by 193 publications

(90 citation statements)

References 15 publications

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“…This relationship is expected based on previous research where an increase in hatch distance resulted in more porosity [8], and less density [2,6]. The more times the laser has a chance to melt a layer of powder as the laser overlaps the previous tracks, or re-melt a lower layer, it may result in a harder material.…”

Section: Hardnessmentioning

confidence: 54%

“…used titanium (Ti-6Al-4V) powder with a custom-made selective laser melting (SLM) system [2]. They also found that the density decreased as the layer thickness increased.…”

Section: Changing Layer Thicknessmentioning

confidence: 99%

“…Kempen et al found that as scan speed was increased from 120 mm/s to 600 mm/s, hardness and the relative density of steel (18Ni-300) decreased [1]. Sun et al found that the density of titanium alloy (Ti-6Al-4V) increased with decreasing scan speed [2]. In their comparative study of two AM systems, Delgado et al observed that while one system resulted in reduced hardness and ultimate tensile strength (UTS) with increased scan speed, the other systems did not result in any significant difference in either hardness or UTS [5].…”

Section: Changing Scan Speedmentioning

confidence: 99%

“…Increasing the hatch distance from 0.12 mm to 0.14 mm resulted in scan tracks that were not fully melted, had large pores, and decreased density. Sun et al also used titanium alloy powder with a custom-made LPBF system while changing hatch distance [2]. As hatch distance decreased, density increased.…”

Section: Changing Hatch Distancementioning

confidence: 99%

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The effects of laser powder bed fusion process parameters on material hardness and density for nickel alloy 625

Brown¹,

Jacob²,

Possolo³

et al. 2018

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The goal of this study was to investigate the relationship between mechanical and material properties (including density) of manufactured nickel super alloy (IN625) using a laser powder bed fusion process and three process parameters: laser power, hatch distance, and scan speed. Hardness of the manufactured blocks was measured as a representative of the mechanical properties. Density measurements were carried out using the pyncometry method. Three sets of blocks were manufactured using IN625 metal powder (nitrogen gas atomized) on a laser powder bed fusion machine. Different combinations of process parameters yielded different energy densities for each block for the three builds. The laser scan speed, laser power, hatch distance, and energy density all had statistically significant relationships with hardness. The average bulk density increased non-linearly with increasing values of energy density. A similar trend was in the hardness data. The results of this study served as a guide to determine the range of parameters yielding acceptable material properties for the investigation of process parameter sensitivities during a subsequent IN625 round robin study.

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Section: Hardnessmentioning

confidence: 54%

“…used titanium (Ti-6Al-4V) powder with a custom-made selective laser melting (SLM) system [2]. They also found that the density decreased as the layer thickness increased.…”

Section: Changing Layer Thicknessmentioning

confidence: 99%

Section: Changing Scan Speedmentioning

confidence: 99%

Section: Changing Hatch Distancementioning

confidence: 99%

See 2 more Smart Citations

The effects of laser powder bed fusion process parameters on material hardness and density for nickel alloy 625

Brown¹,

Jacob²,

Possolo³

et al. 2018

View full text Add to dashboard Cite

show abstract

“…It is possible to change the density and amount of the pores inside the DMLS product by changing Impact Factor (JCC): 6.8765 the Energy density as well as changing those four machining process parameters, which can directly reflect the mechanical properties of the product [6,7]. As the melting prope properties are also depending on machining process parameters DMLS is a promising technology due to almost unlimited geometrical freedom applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Hardness, Microstructure and Surface Roughness of Maraging Steel Parts Produced by Direct Metal Laser Sintering Technique

Apparao¹,

Tjprc²

2018

IJMPERD

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Comparison of Laser Powder Bed Fusion and Cast Inconel 713 Alloy in Terms of Their Microstructure, Mechanical Properties, and Fatigue Life

Zhao

Hung

et al. 2021

Adv Eng Mater

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Herein, laser powder bed fusion (LPBF) and casting Inconel 713 are used as the experimental materials for comparing the microstructure, mechanical properties, and fatigue characteristics. According to the results, the LPBF specimen has a columnar grain morphology that completely differs from the dendritic structure in the casting specimen, little difference in the hardness of the two specimens. In terms of mechanical properties, the LPBF specimen shows higher strength than the casting specimen but slightly lower ductility. In terms of fatigue characteristics, the LPBF specimen is better than the casting specimen under all loadings. For the LPBF specimen, solution heat treatment is used, which can cause the γ' phase to precipitate on the grain boundary and result in a texture effect. This promotes fracture during tensile and considerably reduces ductility. Nevertheless, the unheated LPBF Inconel 713 exhibits better strength and fatigue properties than casting specimens and can, thus, replace the traditional casting materials in the aerospace industry.

show abstract

Parametric optimization of selective laser melting for forming Ti6Al4V samples by Taguchi method

Cited by 193 publications

References 15 publications

The effects of laser powder bed fusion process parameters on material hardness and density for nickel alloy 625

The effects of laser powder bed fusion process parameters on material hardness and density for nickel alloy 625

Experimental Investigation on Hardness, Microstructure and Surface Roughness of Maraging Steel Parts Produced by Direct Metal Laser Sintering Technique

Comparison of Laser Powder Bed Fusion and Cast Inconel 713 Alloy in Terms of Their Microstructure, Mechanical Properties, and Fatigue Life

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