The effect of process parameters on the stability and efficiency in the laser powder bed fusion of Ti-6Al-4 V based on the interval powder layer thickness

Wang, Peng; Chen, Dongju; Tang, Yuhang; Fan, Jinwei; Li, Gang

doi:10.1007/s00170-023-11704-7

Int J Adv Manuf Technol

2023

DOI: 10.1007/s00170-023-11704-7

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The effect of process parameters on the stability and efficiency in the laser powder bed fusion of Ti-6Al-4 V based on the interval powder layer thickness

Peng Wang

Dongju Chen

Yuhang Tang³

et al.

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Cited by 3 publications

References 63 publications

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Using defects as a ‘fossil record’ to help interpret complex processes during additive manufacturing: as applied to raster-scanned electron beam powder bed additively manufactured Ti–6Al–4V

O’Donnell,

Quintana,

Kenney

et al. 2023

J Mater Sci

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Defects in parts produced by additive manufacturing, instead of simply being perceived as deleterious, can act as important sources of information associated with the complex physical processes that occur during materials deposition and subsequent thermal cycles. Indeed, they act as materials-state ‘fossil’ records of the dynamic AM process. The approach of using defects as epoch-like records of prior history has been developed while studying additively manufactured Ti–6Al–4V and has given new insights into processes that may otherwise remain either obscured or unquantified. Analogous to ‘epochs,’ the evolution of these defects often is characterized by physics that span across a temporal length scale. To demonstrate this approach, a broad range of analyses including optical and electron microscopy, X-ray computed tomography, energy-dispersive spectroscopy, and electron backscatter diffraction have been used to characterize a raster-scanned electron beam Ti–6Al–4V sample. These analysis techniques provide key characteristics of defects such as their morphology, location within the part, complex compositional fields interacting with the defects, and structures on the free surfaces of defects. Observed defects have been classified as banding, spherical porosity, and lack of fusion. Banding is directly related to preferential evaporation of Al, which has an influence on mechanical properties. Lack-of-fusion defects can be used to understand columnar grain growth, fluid flow of melt pools, humping, and spattering events. Graphical abstract

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Using defects as a ‘fossil record’ to help interpret complex processes during additive manufacturing: as applied to raster-scanned electron beam powder bed additively manufactured Ti–6Al–4V

O’Donnell,

Quintana,

Kenney

et al. 2023

J Mater Sci

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Microstructure, compressive performance and wear resistance of pure molybdenum additively manufactured via laser powder bed fusion

Huang,

He,

Long

et al. 2024

International Journal of Refractory Metals and Hard Materials

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Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy

Bi,

Wu,

Liu

et al. 2024

Journal of Materials Science & Technology

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The effect of process parameters on the stability and efficiency in the laser powder bed fusion of Ti-6Al-4 V based on the interval powder layer thickness

Cited by 3 publications

References 63 publications

Using defects as a ‘fossil record’ to help interpret complex processes during additive manufacturing: as applied to raster-scanned electron beam powder bed additively manufactured Ti–6Al–4V

Using defects as a ‘fossil record’ to help interpret complex processes during additive manufacturing: as applied to raster-scanned electron beam powder bed additively manufactured Ti–6Al–4V

Microstructure, compressive performance and wear resistance of pure molybdenum additively manufactured via laser powder bed fusion

Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy

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