Powder Metallurgy in Aerospace – Fundamentals of Pm Processes and Examples of Applications

Vicenzi, B.; Boz, Kenan; Aboussouan, L.

doi:10.36547/ams.26.4.656

Cited by 16 publications

(16 citation statements)

References 1 publication

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“…Mg-Fe materials used in this study were synthesized through the liquid metallurgy route based disintegrated melt deposition (DMD) technique [1]. Mg turnings and Fe particles were heated in a graphite crucible to 750 • C in an electrical resistance furnace under inert argon gas protective atmosphere.…”

Section: Processingmentioning

confidence: 99%

“…Magnesium (Mg) alloys and Mg composites are prospective materials for automotive and aerospace industries [1,2], as they can significantly reduce the weight of structures due to their low density and high strength-to-weight ratio. Al, Zn, Zr, Mn, and rare earth metals are the elements commonly used for alloying Mg. To make Mg composites, usually ceramic particles (micron to nano-scale sizes) such as alumina, silicon carbide, boron carbide, boron nitride, and carbonaceous materials (e.g., carbon nanotubes and graphene) are incorporated as reinforcement to Mg matrices [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Utilizing Iron as Reinforcement to Enhance Ambient Mechanical Response and Impression Creep Response of Magnesium

Jayalakshmi

Sankaranarayanan

Singh

et al. 2021

Metals

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To realize light-weight materials with high strength and ductility, an effective route is to incorporate strong and stiff metallic elements in light-weight matrices. Based on this approach, in this work, magnesium–iron (Mg-Fe) composites were designed and characterized for their microstructure and mechanical properties. The Mg-Fe binary system has extremely low solubility of Fe in the Mg-rich region. Pure magnesium was incorporated with 5, 10, and 15 wt.% Fe particles to form Mg-Fe metal–metal composites by the disintegrated melt deposition technique, followed by hot extrusion. Results showed that the iron content influences (i) the distribution of Fe particles in the Mg matrix, (ii) grain refinement, and (iii) change in crystallographic orientation. Mechanical testing showed that amongst the composites, Mg-5Fe had the highest hardness, strength, and ductility due to (a) the uniform distribution of Fe particles in the Mg matrix, (b) grain refinement, (c) texture randomization, (d) Fe particles acting as effective reinforcement, and (e) absence of deleterious interfacial reactions. Under impression creep, the Mg-5Fe composite had a creep rate similar to those of commercial creep-resistant AE42 alloys and Mg ceramic composites at 473 K. Factors influencing the performance of Mg-5Fe and other Mg metal–metal composites having molybdenum, niobium, and titanium (elements with low solubility in Mg) are presented and discussed.

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Section: Processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Utilizing Iron as Reinforcement to Enhance Ambient Mechanical Response and Impression Creep Response of Magnesium

Jayalakshmi

Sankaranarayanan

Singh

et al. 2021

Metals

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“…Manufacturing techniques based on powder metallurgy (PM) play a significant role in several different industrial fields including, among others, automotive [1,2], aerospace [3][4][5], and biomedical [6,7]. PM is also growing in the production of electro-magnetic components with properties difficult or impossible to be obtained with conventional forming techniques [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review

Bidulský¹,

Gobber

Bidulská

et al. 2021

Metals

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In the last years, functionalized powders are becoming of increasing interest in additive manufacturing (particularly in laser powder bed fusion processing, L-PBF), due to their improved flowability and enhanced processability, particularly in terms of laser absorbance. Functionalized powders may also provide higher final mechanical or physical properties in the manufactured parts, like an increased hardness, a higher tensile strength, and density levels close to theoretical. Coatings represent a possible interesting approach for powders’ functionalizing. Different coating methods have been studied in the past years, either mechanical or non-mechanical. This work aims to present an overview of the currently obtained coated powders, analyzing in detail the processes adopted for their production, the processability of the coated systems, and the mechanical and physical properties of the final parts obtained by using L-PBF for the powders processing.

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“…Currently, the most widespread AM process for the metal in industrial applications is laser powder-bed fusion technology (L-PBF) [8,[25][26][27]. The L-PBF technology uses the laser source as an energy source to melt the metal powders and the components are built, layer by layer [28][29][30], directly from Computer-Aided Design (CAD) models [24,31]. To date, there are numerous studies focused on the possibility to produce maraging steel components through L-PBF technology (e.g., [32][33][34]).…”

Section: Introductionmentioning

confidence: 99%

Heat Treatment Effect on Maraging Steel Manufactured by Laser Powder Bed Fusion Technology: Microstructure and Mechanical Properties

Stornelli

Gaggia²,

Rallini³

et al. 2021

Acta Metall Slovaca

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Laser Powder Bed Fusion (L-PBF) is a widespread additive manufacturing technology in industrial applications, for metal components manufacturing. Maraging steel is a special class of Fe-Ni alloys, typically used in the aerospace and tooling sectors due to their good combination of mechanical strength and toughness. This work analyses the heat treatment effect on the microstructure and hardness value of 300-grade maraging steel manufactured by the L-PBF process. The considered heat treatment consists of a solution annealing treatment followed by quenching and ageing hardening treatment. The effect of ageing temperature is reported, in a wide temperature range. Results show that solution annealing treatment fully dissolves the solidification structure caused by the L-PBF process. Moreover, the ageing hardening treatment has a significant impact on the hardness, hence on strength, of L-PBF maraging steel. The optimal ageing conditions for the L-PBF maraging steel are identified and reported: in particular, results show that the hardness of 583 HV is achieved following ageing treatment at 490 °C for 6 hours. A higher treatment temperature leads to over-ageing resulting in a decrease of hardness. Conversely, an excessive ageing time does not seem to affect the hardness value, for the ageing temperature of 490 °C.

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Powder Metallurgy in Aerospace – Fundamentals of Pm Processes and Examples of Applications

Cited by 16 publications

References 1 publication

Utilizing Iron as Reinforcement to Enhance Ambient Mechanical Response and Impression Creep Response of Magnesium

Utilizing Iron as Reinforcement to Enhance Ambient Mechanical Response and Impression Creep Response of Magnesium

Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review

Heat Treatment Effect on Maraging Steel Manufactured by Laser Powder Bed Fusion Technology: Microstructure and Mechanical Properties

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