Results 111 to 120 of about 134,959 (299)

Research progress on microstructure, defects, surface and configuration of additive manufactured typical aviation metals

Journal of Aeronautical Materials
Additive manufacturing is a new manufacturing technique that integrates laser，digitization，materials and other disciplines. It has the advantages of dimensionality reduction manufacturing，complex forming，and high material utilization.
ZHANG Xuejun, CHEN Bingqing
doaj   +1 more source

Fatigue response of as built DMLS processed Maraging Steel and effects of machining and heat and surface treatments [PDF]

, 2018
The main motivations for this study arise from the need for an assessment of the fatigue performance of DMLS produced Maraging Steel MS1, when it is used in the \u201cas fabricated\u201d state. The literature indicates a lack of knowledge from this point
Bogojevic, Nebojsa, Ciric-Kostic, Snezana, Croccolo, Dario, De Agostinis, Massimiliano, Fini, Stefano, Muharemovic, Nusret, Olmi, Giorgio, Robusto, Francesco, Vranic, Aleksandar   +8 more
core  

Thermophysical Phenomena in Metal Additive Manufacturing by Selective Laser Melting: Fundamentals, Modeling, Simulation and Experimentation

, 2017
Among the many additive manufacturing (AM) processes for metallic materials, selective laser melting (SLM) is arguably the most versatile in terms of its potential to realize complex geometries along with tailored microstructure.
Gibbs, Jonathan S., Hart, A. John, Meier, Christoph, Penny, Ryan W., Zou, Yu   +4 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

Melting mode-driven processing diagram for nanoparticle-enhanced high-strength aluminum alloy processed by laser powder bed fusion

Materials & Design
AA7075 + ZrH2 (7A76) is a nanoparticle-enhanced high-strength Al alloy, designed to substantially prevent solidification cracking during laser powder bed fusion (LPBF). Significant knowledge gaps persist in understanding the effects of melting modes, the
Ali Rezaei, Mohsen K. Keshavarz, John Barnes, Mihaela Vlasea   +3 more
doaj   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Nanoindentation Criteria for Combinatorial Thin Film Libraries

Advanced Engineering Materials, EarlyView.
Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley   +1 more source

Superior high-temperature mechanical properties of crack-free IN738LC superalloy additively manufactured by L-DED via novel self-adjustable baseplate optimization

Materials & Design
Ni-based superalloy IN738LC is critical for hot-section components of gas turbines and aeroengines due to its high-temperature strength and oxidation resistance, yet its laser directed energy deposition (L-DED) is limited by intrinsic cracking ...
Liqian Ma, Haozhi Chai, Xufei Lu, Yunlong Hu, Meng Wang, Fengxian Liu, Xin Lin   +6 more
doaj   +1 more source