Results 51 to 60 of about 5,593 (276)

Spark Plasma Sintering of Titanium Aluminides: A Progress Review on Processing, Structure-Property Relations, Alloy Development and Challenges

Metals, 2020
Titanium aluminides (TiAl) have the potential of substituting nickel-based superalloys (NBSAs) in the aerospace industries owing to their lightweight, good mechanical and oxidation properties.
Ntebogeng F. Mogale, Wallace R. Matizamhuka   +1 more
doaj   +1 more source

Hf6Al7 and Hf4.44(1)Nb1.56(1)Al7—the First Fully Ordered Main Group Metal Containing W6Fe7 Type Compound and its Ternary Coloring Variant

Zeitschrift für anorganische und allgemeine Chemie, Volume 651, Issue 11, July 22, 2025.
Hf4Nb2Al7 and Hf6Al7 were synthesized from the elements and crystallize in the rhombohedral W6Fe7 type structure. Single crystals showed obverse‐reverse twinning. In addition, 27Al NMR investigations, magnetic measurements and quantum‐chemical calculations were conducted. Attempts to synthesize Hf4NbAl7 led to the discovery of nominal Hf4Nb2Al7 instead
Elias C. J. Gießelmann, Lena Ruck, Stefan Engel, Bernd Morgenstern, Lars Schumacher, Guido Kickelbick, Oliver Janka   +6 more
wiley   +1 more source

Thermokinetic Modeling Approach for Aluminide Diffusion Coatings on Molybdenum Substrates

Advanced Engineering Materials, Volume 27, Issue 13, July 2025.
The advancement of innovative materials for protective coatings in high‐temperature environments relies on a detailed understanding of diffusion processes within these systems. This article presents findings from modeling approaches, supporting the development and optimization of coating materials by focusing on the prediction of diffusion‐driven ...
Jurica Filipovic, Katharina Beck, Christian Kontermann, Mathias Galetz, Matthias Oechsner   +4 more
wiley   +1 more source

PREPARATION OF TiAl15Si15 ALLOY BY HIGH PRESSURE SPARK PLASMA SINTERING

Acta Metallurgica Slovaca, 2018
This work deals with preparation of intermetallic alloy TiAl15Si15 (wt. %) by powder metallurgy using Spark Plasma Sintering method. Ti-Al-Si alloys are known as materials with low density, relatively good mechanical properties in comparison with their ...
Anna Knaislová, Pavel Novák, Filip Průša, Sławomir Cygan, Lucyna Jaworska   +4 more
doaj   +1 more source

Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing

Advanced Engineering Materials, Volume 27, Issue 7, April 2025.
This study investigates the effect of a NiAl coating on additively manufactured (AM) IN939 to improve its cyclic oxidation resistance at 1050 °C. The coating promotes protective α‐Al2O3 formation, allowing durability for up to 240 cycles, while uncoated AM‐IN939 experiences spallation and weight loss due to nonprotective oxides.
Fatih Guler, Ahmet Arda Inceyer, Seda Kol, Metin Usta, Huseyin Aydin, Ozgul Keles   +5 more
wiley   +1 more source

Multiperspective Structural Integrity Investigations on the Rotor Blade of Axial Flow Compressor Under Various Rotodynamic Loading Conditions Using Enhanced Computational Analyses

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Small gas turbine (SGT) engines power the latest generation of unmanned aerial vehicles (UAVs). This study investigates the axial flow–natured rotor blades of an SGT compressor. Rotor structures in axial flow compressors have failed due to complex stress scenarios.
Sandhiya Chandrakumar, Shyam Sundar Jayakumar, Beena Stanislaus Arputharaj, Parvathy Rajendran, Arul Prakash Raji, Arunkumar Karuppasamy, Darshan Kumar Jayaram, Arun Bhuvendran, Senthil Kumar Madasamy, Vijayanandh Raja, Qingfei Fu   +10 more
wiley   +1 more source

Effects of the manufacturing process on fracture behaviour of cast TiAl intermetallic alloys

Fracture and Structural Integrity, 2013
The ? -TiAl based intermetallic alloys are interesting candidate materials for high-temperature applications with the efforts being directed toward the replacement of Ni-based superalloys.
A. Brotzu, F. Felli, D. Pilone
doaj  

Multiobjective Optimization of Fiber Laser Trepan Drilling for Stainless Steel Using Taguchi–Grey Relational Analysis

Journal of Engineering, Volume 2025, Issue 1, 2025.
The present work focuses on optimizing spatter size, taper angle, and circularity simultaneously during fiber laser trepan drilling of stainless steel thin sheet using Taguchi–grey relational analysis (GRA). The controllable process factors such as trepanning speed, average laser power, and pulse frequency with five levels are applied to conduct the ...
Alemu Workie Kebede, Promod Kumar Patowari, Chinmaya Kumar Sahoo, Ibrahim Kucukkoc   +3 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

Results 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, Anatolii Minitskyi, Ievgen Byba, Dmytro Vedel, Мaksym Barabash   +4 more
doaj   +1 more source

Constitutive behavior and microstructural evolution in Ti–Al–Si ternary alloys processed by mechanical milling and spark plasma sintering

Journal of Materials Research and Technology, 2020
Severe plastic deformation is closely related to the microstructural behaviors of intermetallics or grain refinement by mechanical milling and subsequent rapid sintering process, i.e. high energy ball milling and spark plasma sintering.
Jeong-Han Lee, Hyun-Kuk Park, Ju-Hun Kim, Jun-Ho Jang, Sung-Kil Hong, Ik-Hyun Oh   +5 more
doaj   +1 more source