Laser additive manufacturing of oxide dispersion strengthened steels using laser-generated nanoparticle-metal composite powders

Wilms, Markus Benjamin; Streubel, René; Frömel, Felix; Weisheit, Andreas; Tenkamp, Jochen; Walther, Frank; Barcikowski, Stephan; Schleifenbaum, Johannes Henrich; Gökce, Bilal

doi:10.1016/j.procir.2018.08.093

Cited by 42 publications

(15 citation statements)

References 21 publications

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“…In the present investigation, however, the grains were coarsened to nearly double their original size with the addition of 0.6 wt% Y2O3 rather than being refined. Wilms et al [22] suggested that there was a poor wettability of Y2O3 by the Ni-Cr melt in stainless steel manufactured by the laser AM process, where grain refinement by Y2O3 was not observed. In the IN738LC parts produced in this work, it could be argued that this is due to a reduction in thermal diffusivity during solidification because Y4Al2O9 can be used as a type of thermal barrier material due to its low hightemperature thermal conductivity [23].…”

Section: Effects Of Y2o3 On the Microstructure Before Oxidationmentioning

confidence: 99%

Effects of Y2O3 nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion

Guo

Liu

et al. 2020

Corrosion Science

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Section: Effects Of Y2o3 On the Microstructure Before Oxidationmentioning

confidence: 99%

Effects of Y2O3 nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion

Guo

Liu

et al. 2020

Corrosion Science

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“…In the latter case, laser pulses are focused onto a bulk target immersed in a liquid, enabling the cost‐effective [15] production of colloids on the gram‐scale [16, 17] from a wide range of different material classes such as metals, [18–20] oxides [21–23] or alloys [24–28] in different liquids [29–32] . These synthesized nanoparticles typically are of high purity [33] and are promising materials for application fields such as biomedicine, [24, 34] catalysis, [35–38] or 3D printing [39–43] …”

Section: Introductionmentioning

confidence: 99%

“…[29][30][31][32] These synthesized nanoparticles typically are of high purity [33] and are promising materials for application fields such as biomedicine, [24,34] catalysis, [35][36][37][38] or 3D printing. [39][40][41][42][43] Generally,L AL is characterized by differentc ompeting physical and chemical phenomena that are determined by the interaction between the laser,t he target,a nd the liquid. After the laser pulse interacts with the bulk target, ah igh-temperature plasma is generated containing ah igh density of free electrons and ablated matter.…”

Section: Introductionmentioning

confidence: 99%

How the Physicochemical Properties of the Bulk Material Affect the Ablation Crater Profile, Mass Balance, and Bubble Dynamics During Single‐Pulse, Nanosecond Laser Ablation in Water

Kalus

Barcikowski

Gökce

2021

Chemistry A European J

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Understanding the key steps that drive the laser‐based synthesis of colloids is a prerequisite for learning how to optimize the ablation process in terms of nanoparticle output and functional design of the nanomaterials. Even though many studies focus on cavitation bubble formation using single‐pulse ablation conditions, the ablation efficiency and nanoparticle properties are typically investigated under prolonged ablation conditions with repetition rate lasers. Linking single‐pulse and multiple‐pulse ablation is difficult due to limitations induced by gas formation cross‐effects, which occur on longer timescales and depend on the target materials’ oxidation‐sensitivity. Therefore, this study investigates the ablation and cavitation bubble dynamics under nanosecond, single laser pulse conditions for six different bulk materials (Au, Ag, Cu, Fe, Ti, and Al). Also, the effective threshold fluences, ablation volumes, and penetration depths are quantified for these materials. The thermal and chemical properties of the corresponding bulk materials not only favor the formation of larger spot sizes but also lead to the highest molar ablation efficiencies for low melting materials such as aluminum. Furthermore, the concept of the cavitation bubble growth linked with the oxidation sensitivity of the ablated material is discussed. With this, evidence is provided that intensive chemical reactions occurring during the very early timescale of ablation are significantly enhanced by the bubble collapse.

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“…Oxide dispersion strengthening (ODS) is known to increase the materials strength especially at high temperatures and improve creep behavior. The feasibility to apply ODS in additive manufacturing of Fe-, Ni-, Ti-based and y-TiAl alloys and the positive effect on mechanical properties has been demonstrated for various material systems [19][20][21][22][23][24]. It leads to increased hardness and strength.…”

Section: Introductionmentioning

confidence: 99%

Laser Additive Manufacturing of Intermetallic Alloys for High-Temperature Applications

Rittinghaus¹,

Schmelzer²,

Wilms³

et al. 2021

Preprint

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Intermetallic alloys like e.g. Iron-Aluminides, Titanium-Aluminides or Molybdenum- Silizides are prospective materials for high-temperature applications. For additive manufacturing (AM) intermetallic structural materials are particularly challenging due to their high melting points, oxygen susceptibility and low temperature brittleness. The feasibility of manufacturing intermetallic Mo-Si-B alloys with the laser additive manufacturing process of direct energy deposition (DED) is demonstrated and recent results in characterizing rapidly solidified material with respect to correlations between process, composition and microstructures are presented. The possibility to dope the material with Yttrium oxide (Y2O3) for dispersion is successfully demonstrated. Current challenges, e.g. homogenous distribution of alloying elements and applicability are addressed.

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Laser additive manufacturing of oxide dispersion strengthened steels using laser-generated nanoparticle-metal composite powders

Cited by 42 publications

References 21 publications

Effects of Y2O3 nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion

Effects of Y2O3 nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion

How the Physicochemical Properties of the Bulk Material Affect the Ablation Crater Profile, Mass Balance, and Bubble Dynamics During Single‐Pulse, Nanosecond Laser Ablation in Water

Laser Additive Manufacturing of Intermetallic Alloys for High-Temperature Applications

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