Results 51 to 60 of about 11,050 (154)

TITANIUM POWDERS USED IN POWDER BED FUSION: THEIR RELEVANCE TO RESPIRATORY HEALTH

South African Journal of Industrial Engineering, 2018
This study aimed to characterise three titanium powders used in powder bed fusion in terms of particle size, shape, and elemental composition for comparison with safety data sheet (SDS) information, and their relevance to additive manufacturing (AM) operators’ respiratory health.
du Preez, S., de Beer, D.J., du Plessis, J.L.   +2 more
openaire   +4 more sources

Additive manufacturing of pure tungsten via electron beam powder bed fusion: Toward fusion-ready fabrication

Materials & Design
Tungsten and its alloys are leading materials for plasma-facing components (PFCs) in thermonuclear fusion reactors, valued for their superior resistance to extreme conditions.
Toan D. Truong, Mohsen Taheri Andani
doaj   +1 more source

Eutectic Superalloys for Laser Powder Bed Fusion [PDF]

Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloys when processed through additive manufacturing. Laser-pass assessment reveals that both Cotac-74 and Cotac-744 display improved cracking resistance when compared to the conventional Ni-based superalloy CM247LC ...
Christofidou, K.A., Wilson, A.S., Markanday, J.F.S., Pickering, E.J., Church, N.L., Miller, J.R., Jones, N.G., Jones, C.N., Stone, H.J.   +8 more
openaire   +2 more sources

Extracting powder bed features via electron optical images during electron beam powder bed fusion

Additive Manufacturing Letters
Electron beam powder bed fusion offers the unique opportunity to observe the process by measuring scattered electrons on a metal detector. This technique is the state of the art in generating electron optical images of the build area after melting using ...
Matthias Markl, Mohammad Reza Azadi Tinat, Timo Berger, Jakob Renner, Carolin Körner   +4 more
doaj   +1 more source

In situ recrystallization of pure Cu during electron beam powder bed fusion

Additive Manufacturing Letters
Additively manufactured parts often exhibit an anisotropic microstructure characterized by columnar grains resulting from epitaxial growth from the underlying layers in the direction of the thermal gradient, i.e. parallel to the build direction.
Alexandre Margueret, Pierre Lhuissier, Guilhem Martin   +2 more
doaj   +1 more source

A Comparative Study of the As-Built Microstructure of a Cold-Work Tool Steel Produced by Laser and Electron-Beam Powder-Bed Fusion

Metals
A high-alloy (Cr-Mo-V) cold-work tool steel was manufactured by laser powder-bed fusion (PBF-LB) without preheating and by electron-beam powder-bed fusion (PBF-EB) with the build temperature set at 850 °C.
Mikael Åsberg, Fengxiang Lin, Patrik Karlsson, Christos Oikonomou, Emil Strandh, Markus Uhlirsch, Pavel Krakhmalev   +6 more
doaj   +1 more source

Life cycle assessment of additively manufactured elastocaloric Ni-Ti heat pump/refrigeration components and the effect of design geometry on the environmental impact categories

Results in Engineering
Elastocaloric Ni-Ti alloys offer solid-state heat pump and cooling applications. The environmental impact of elastocaloric Ni-Ti parts manufactured via powder bed fusion was assessed using life cycle assessment with the ReCiPe method.
Anesu Nyabadza, Karthikeyan Tamil, Lehar Asip Khan, Sujith S. Kumar, Corné Muilwijk, Greg McNamara, Kevin O'Toole, Lorna Fitzsimons, Dermot Brabazon   +8 more
doaj   +1 more source

Crystallographic Texture and Phase Transformation in Titanium Alloys Fabricated via Powder Bed Fusion Processes: A Comprehensive Review

Metals
Additive manufacturing (AM) of titanium alloys enables the production of complex, high-performance components, but the steep thermal gradients and rapid solidification involved make it challenging to control crystallographic texture and phase evolution ...
Rajesh Kannan Arasappan, Hafiz Muhammad Rehan Tariq, Ha-Seong Baek, Minki Kim, Tea-Sung Jun   +4 more
doaj   +1 more source

Tomography of Laser Powder Bed Fusion Maraging Steel

Materials
The presence of defects in additive manufactured maraging steel is a widespread problem as its dependence on processing parameters significantly influences it. Using X-ray computed tomography, along with optical microscope data limited to 2D images, quantifies the internal porosity present on a compact tension sample typically employed in fatigue ...
Pablo M. Cerezo, Jose A. Aguilera, Antonio Garcia-Gonzalez, Pablo Lopez-Crespo   +3 more
openaire   +4 more sources

Powder movement rules of laser powder bed fusion additive manufacturing aluminum alloy based on discrete element method

Advances in Mechanical Engineering
Laser Powder Bed Fusion (LPBF) is a promising metal additive manufacturing technology based on layer by layer powder spreading, and powder bed uniformity has a great influence on the forming quality.
Pan Lu, Zhang Chen-lin, Liu Tong, Wang Liang, Zhang Heng-hua   +4 more
doaj   +1 more source