Results 41 to 50 of about 129,705 (307)

Design of modified plastic surfaces for antimicrobial applications: Impact of ionizing radiation on the physical and mechanical properties of polypropylene [PDF]

open access: yes, 2013
Surface modification of polypropylene (PP) sheets was carried out by radiation induced graft polymer- ization of hydrophilic functional molecules such as N,N-dimethylacrylamide (DMA) and [2-methacry- loyloxy)ethyl] trimethylammonium chloride, which is a ...
DELATTRE, Jennifer   +3 more
core   +6 more sources

ELECTRON BEAM MELTING OF URANIUM [PDF]

open access: yes, 1963
Feed stock prepared from ingot, dingot, and under-saltmelted U was melted by electron bombardment. Analysis of the ingots produced revealed that some Al, Cr, Mg, Mn, and Pb were volatilized from the melt. C was reduced when Zr was present in the feed material.
openaire   +2 more sources

Efficient Process Development for Laser Powder Bed Fusion of a Soft‐Magnetic Metallic Glass Composite

open access: yesAdvanced Engineering Materials, EarlyView.
Iron‐based metallic glass alloys exhibit excellent soft‐magnetic properties, and unprecedented geometrical freedom in the design of soft‐magnetic metallic glass components is made possible by additive manufacturing. An efficient workflow for developing parameters for laser‐based powder bed fusion of a Fe‐based metallic glass alloy is presented along ...
Julia Löfstrand   +7 more
wiley   +1 more source

Microstructure, phase composition, and oxidation resistance of alloys of Nb-Ti-Al system produced by electron beam melting and zone melting

open access: yesResults in Materials
Titanium aluminides and alloys based on them are promising heat-resistant materials. These alloys are promising for using in equipment working under severe conditions, in particular in aircraft construction, mechanical engineering and space technology ...
Iryna Trosnikova   +4 more
doaj   +1 more source

Creep behavior of electron-beam-melted rhenium [PDF]

open access: yesMetallurgical Transactions, 1971
Creep deformation in electron-beam-melted polycrystalline rhenium sheet was evaluated at 2200° to 4200°F (1477° to 2588°K) and 4 to 40 ksi (28 to 276 MN per sq m). Comparisons were made with powder metallurgy rhenium under similar conditions. Changes in creep-rupture behavior resulting from electron beam melting of rhenium were greater ductility ...
Walter R. Witzke, Peter L. Raffo
openaire   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen   +3 more
wiley   +1 more source

Numerical Study of Temperature Field and Melt Pool Properties during Electron Beam Selective Melting Process with Single Line and Multiple Line Scanning

open access: yesMathematics
Electron beam selective melting is a metal powder bed fusion additive manufacturing technology. In order to study the temperature field and melt pool changes of high Nb-TiAl electron beam selective melting on a single scan line and multi-scan lines.
Zhibin An, Bo Wang, Minghao Yu
doaj   +1 more source

Numerical Alloy Development for Additive Manufacturing towards Reduced Cracking Susceptibility

open access: yesCrystals, 2021
In this work, we investigated the viability of established hot cracking models for numerically based development of crack-resistant nickel-base superalloys with a high γ′ volume fraction for additive manufacturing.
Benjamin Wahlmann   +3 more
doaj   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner   +22 more
wiley   +1 more source

Influence of defects on axial fatigue strength of maraging steel specimens produced by additive manufacturing

open access: yesMATEC Web of Conferences, 2018
Nowadays many materials such as steels, aluminium and titanium alloys can be realised by powder bed solutions melting subsequently powder layers by means of a laser or electron beam (Laser Beam Melting – LBM and Electron Beam Melting – EBM).
Rigon Daniele   +5 more
doaj   +1 more source

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