High-temperature microstructural stability of pure Ni fabricated by laser powder bed fusion using Gaussian and flat-top beam profiles

Jodi, Dennis Edgard; Kitashima, Tomonori; Singh, Alok Kumar; Watanabe, Makoto

doi:10.1016/j.matchar.2023.112897

Cited by 14 publications

(1 citation statement)

References 38 publications

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“…Figure 2d shows the IPF-Z map taken in the X-Z plane. EBSD investigation revealed typical columnar grain growth and confirmed the development of a strong <001>//BD texture corresponding to the <001>{001} preferred growth direction [23]. Because of the preferential growth of elongated grains towards the centre of the melt pool and the existence of small equiaxed grains, some of the melt pool boundary was also revealed, as indicated by the black dashed lines.…”

Section: Resultsmentioning

confidence: 72%

Effects of KoBo-Processing and Subsequent Annealing Treatment on Grain Boundary Network and Texture Development in Laser Powder Bed Fusion (LPBF) AlSi10Mg Alloy

Snopiński

2024

Symmetry

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It is well known that the properties of polycrystalline metals are related to grain boundaries (GBs), which are fundamental structural elements where crystallographic orientations change abruptly and often exhibit some degree of symmetry. Grain boundaries often exhibit unique structural, chemical, and electronic properties that differ from bulk crystalline domains. Their effects on material properties, including mechanical strength, corrosion resistance, and electrical conductivity, make grain boundaries a focus of intense scientific investigation. In this study, the microstructural transformation of an AlSi10Mg alloy subjected to KoBo extrusion and subsequent annealing is investigated. A notable discovery is the effectiveness of a strain-annealing method for grain boundary engineering (GBE) of the LPBF AlSi10Mg alloy. In particular, this study shows a significant increase in the population of coincidence site lattice boundaries (CSL), which embody the symmetry of the crystal lattice structure. These boundaries, which are characterised by a high degree of symmetry, contribute to their special properties compared to random grain boundaries. The experimental results emphasise the crucial role of strain-induced boundary migration (SIBM) in the development of a brass texture in the microstructure of the alloy after annealing. In addition, the presented results demonstrate the feasibility of applying GBE to materials with high stacking fault energy (SFE), which opens up new possibilities for optimizing their properties.

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Section: Resultsmentioning

confidence: 72%

Effects of KoBo-Processing and Subsequent Annealing Treatment on Grain Boundary Network and Texture Development in Laser Powder Bed Fusion (LPBF) AlSi10Mg Alloy

Snopiński

2024

Symmetry

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Laser‐Based Selective Material Processing for Next‐Generation Additive Manufacturing

Park,

Bui

et al. 2023

Advanced Materials

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The connection between laser‐based material processing and additive manufacturing is quite deeply rooted. In fact, the spark that started the field of additive manufacturing was the idea that two intersecting laser beams could selectively solidify a vat of resin. Ever since, laser has been accompanying the field of additive manufacturing, with its repertoire expanded from processing only photopolymer resin to virtually any material, allowing liberating customizability. As a result, additive manufacturing is expected to take an even more prominent role in the global supply chain in years to come. Herein, an overview of laser‐based selective material processing is presented from various aspects: the physics of laser‐material interactions, the materials currently used in additive manufacturing processes, the system configurations that enable laser‐based additive manufacturing, and various functional applications of next‐generation additive manufacturing. Additionally, current challenges and prospects of laser‐based additive manufacturing are discussed.This article is protected by copyright. All rights reserved

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Crystal plasticity quantification of anisotropic tensile and fatigue properties in laser powder bed fused Inconel 718 superalloy

Toursangsaraki,

Du,

Wang

et al. 2024

Additive Manufacturing

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High-temperature microstructural stability of pure Ni fabricated by laser powder bed fusion using Gaussian and flat-top beam profiles

Cited by 14 publications

References 38 publications

Effects of KoBo-Processing and Subsequent Annealing Treatment on Grain Boundary Network and Texture Development in Laser Powder Bed Fusion (LPBF) AlSi10Mg Alloy

Effects of KoBo-Processing and Subsequent Annealing Treatment on Grain Boundary Network and Texture Development in Laser Powder Bed Fusion (LPBF) AlSi10Mg Alloy

Laser‐Based Selective Material Processing for Next‐Generation Additive Manufacturing

Crystal plasticity quantification of anisotropic tensile and fatigue properties in laser powder bed fused Inconel 718 superalloy

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