3D laser metal deposition: process steps for additive manufacturing

Graf, Benjamin; Marko, Angelina; Petrat, T.; Gumenyuk, Andrey; Rethmeier, Michael

doi:10.1007/s40194-018-0590-x

Cited by 18 publications

(4 citation statements)

References 9 publications

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“…According to Mahamood (2018), the key processing parameters are laser power, scanning velocity, powder flow rate, and gas flow rate. Coherently, Brandt (2017) and Graf et al (2018) highlight the opportunity to apply DED for consistent and efficient powder delivery, but also stress the negative influences of the weld bead geometry produced. Since layer thickness is typically larger than in SLM, DED enables the production of near-net-shape geometries that need to be machined afterwards (Sames et al, 2016;Lorenz et al, 2015).…”

Section: Laser Metal Deposition -Principle and Propertiesmentioning

confidence: 99%

Hybrid Additive Manufacturing - Requirements Engineering Framework for Process Chain Considerations

Schneberger

Häfele²,

Kaspar

et al. 2019

Proc. Int. Conf. Eng. Des.

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Additive Manufacturing (AM) provides significant opportunities for design and functional integration of parts and assemblies. Compared to conventional processes, the AM principle increases design freedom notably. Additionally, numerous processible materials and hybrid processes enable the implementation in different industries, spanning from aerospace over automobile until medical applications.However, there are still handicaps to be addressed, arising from the large diversity of AM principles, post-processing and quality assurance issues, partly insufficient user knowledge, and organizational aspects. Coherently, lacking requirements specification hinders a successful consideration of AM in the early stages of development, and its later implementation.To promote knowledge build-up, this contribution presents a requirements specification framework, which supports developers in determining demands throughout the development process, including those resulting from post-processing and testing operations. By incorporating thorough analyses of general organizational and resort overarching limitations, this contribution promotes a successful implementation of suitable AM strategies.

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Section: Laser Metal Deposition -Principle and Propertiesmentioning

confidence: 99%

Hybrid Additive Manufacturing - Requirements Engineering Framework for Process Chain Considerations

Schneberger

Häfele²,

Kaspar

et al. 2019

Proc. Int. Conf. Eng. Des.

View full text Add to dashboard Cite

show abstract

“…Different types of materials like plastics [55,56], concrete [57,58], composites [59,60], elastomers [61,62], polymers [63][64][65], metals and alloys [66][67][68][69][70][71][72], and non-metals [73,74] can be used for developing components. Commonly used 3D printing processes for stainless steel alloys, aluminum alloys, titanium alloys, and super alloys are laser powder bed fusion (LPBF) [75][76][77][78][79][80][81][82][83] wire arc direct energy deposition [84][85][86], laser metal deposition [87,88], and additive friction stir deposition [89][90][91] processes. The current research in additive manufacturing on aluminum alloys [92][93][94][95][96][97][98][99][100][10...…”

Section: Introductionmentioning

confidence: 99%

Recent Advancements in Material Waste Recycling: Conventional, Direct Conversion, and Additive Manufacturing Techniques

Golvaskar,

Ojo,

Kannan

2024

Recycling

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To improve the microstructure and mechanical properties of fundamental materials including aluminum, stainless steel, superalloys, and titanium alloys, traditional manufacturing techniques have for years been utilized in critical sectors including the aerospace and nuclear industries. However, additive manufacturing has become an efficient and effective means for fabricating these materials with superior mechanical attributes, making it easier to develop complex parts with relative ease compared to conventional processes. The waste generated in additive manufacturing processes are usually in the form of powders, while that of conventional processes come in the form of chips. The current study focuses on the features and uses of various typical recycling methods for traditional and additive manufacturing that are presently utilized to recycle material waste from both processes. Additionally, the main factors impacting the microstructural features and density of the chip-unified components are discussed. Moreover, it recommends a novel approach for recycling chips, while improving the process of development, bonding quality of the chips, microstructure, overall mechanical properties, and fostering sustainable and environmentally friendly engineering.

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“…L-PBFed materials however show characteristics that are detrimental to their fatigue strength [3]. To this aim, factors affecting the cyclic properties of L-PBFed components need then to be carefully identified and studies [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of surface roughness on rotating fatigue strength of as-built AlSi10Mg produced by laser powder bed fusion

Hassanin,

Prisco

2024

Preprint

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ALSi10Mg samples with as-built surfaces characterized by three levels of increasing roughness were fabricated varying the building orientation by laser powder bed fusion. In particular the sample axis was oriented at 0◦, 90◦, and 45◦ with respect to the building direction. It is demonstrated that roughness directly influ ences the fatigue performance of as-built samples, since cracks initiate at surface notches related to features produced by surface roughness. Rougher surfaces gen erate higher concentration stress and show lower cyclic properties. Then the rotating fatigue strength of the samples is non-destructively estimated using the Murakami’s square root area parameter model. The equivalent size of the defect was calculated from the roughness parameters Sz and RSm. The model gives a good correlation with the experimental data, and then it can be applied to evaluate the fatigue strength of as-build ALSi10Mg. These results are important for the reliable design in terms of fatigue strength of selective laser melted AlSi10Mg components.

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3D laser metal deposition: process steps for additive manufacturing

Cited by 18 publications

References 9 publications

Hybrid Additive Manufacturing - Requirements Engineering Framework for Process Chain Considerations

Hybrid Additive Manufacturing - Requirements Engineering Framework for Process Chain Considerations

Recent Advancements in Material Waste Recycling: Conventional, Direct Conversion, and Additive Manufacturing Techniques

Effect of surface roughness on rotating fatigue strength of as-built AlSi10Mg produced by laser powder bed fusion

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