Results 61 to 70 of about 129,828 (304)

Thermoplastic deformation of silicon surfaces induced by ultrashort pulsed lasers in submelting conditions

, 2012
A hybrid 2D theoretical model is presented to describe thermoplastic deformation effects on silicon surfaces induced by single and multiple ultrashort pulsed laser irradiation in submelting conditions. An approximation of the Boltzmann transport equation
E. Stratakis, G. D. Tsibidis, Itina T. E., K. E. Aifantis, Korte F., Sokolnikoff I. S.   +5 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

A Design of Experiment Approach for Development of Electron Beam Powder Bed Fusion Process Parameters and Improvement of Ti-6Al-4V As-Built Properties

Journal of Manufacturing and Materials Processing, 2022
Additive manufacturing is a novel and breakthrough technology by which parts can be manufactured for various purposes and services. As in any production process, the desired properties of additively manufactured components, particularly in electron beam ...
Dor Braun, Yaron Itay Ganor, Shmuel Samuha, Gilad Mordechai Guttmann, Michael Chonin, Nachum Frage, Shmuel Hayun, Eitan Tiferet   +7 more
doaj   +1 more source

Gamma-ray bursts and X-ray melting of material as a potential source of chondrules and planets [PDF]

, 2004
The intense radiation from a gamma-ray burst (GRB) is shown to be capable of melting stony material at distances up to 300 light years which subsequently cool to form chondrules.
Carr, A. J., Duggan, P., French, J., Hanlon, L., McBreen, B., McBreen, S., Metcalfe, L., Winston, E.   +7 more
core   +3 more sources

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

A review of critical repeatability and reproducibility issues in powder bed fusion

Materials & Design, 2020
Due to the many advantages associated with metal additive manufacturing (AM) processes, research into these technologies has grown significantly over the last number of years.
L. Dowling, J. Kennedy, S. O'Shaughnessy, D. Trimble   +3 more
doaj   +1 more source

Simulation of Laser Ablation in Aluminum: The Effectivity of Double Pulses

, 2014
Lasers are becoming a more and more important tool in cutting and shaping materials. Improving precision and effectivity is an ongoing demand in science and industry. One possibility are double pulses.
Krauß, Armin, Lotze, Jan, Roth, Johannes, Trebin, Hans-Rainer   +3 more
core   +1 more source

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source

Mechanisms for removing impurities in a single crystal superalloy by electron beam drip melting

Journal of Materials Research and Technology
The development of clean and green manufacturing of superalloys has attracted widespread attention. The returned scrap of superalloys, however, contains a significant amount of oxygen (O), nitrogen (N), and inclusions, which cannot be used effectively ...
Gengyi Dong, Yijiala Yiliti, Xiaoying Liu, Xiaogang You, Wenjun Han, Liyang Dong, Kai Chang, Haijing Zhou, Pengting Li, Yinong Wang   +9 more
doaj   +1 more source

The Effect of Post-Processing on the Mechanical Behavior of Ti6Al4V Manufactured by Electron Beam Powder Bed Fusion for General Aviation Primary Structural Applications

Aerospace, 2020
In this work a mechanical characterization of Ti6Al4V processed by electron beam powder bed fusion additive manufacturing was carried out to investigate the viability of this technology for the manufacturing of flyable parts for general aviation aircraft.
Carmine Pirozzi, Stefania Franchitti, Rosario Borrelli, Antonio Chiariello, Luigi Di Palma   +4 more
doaj   +1 more source