Results 61 to 70 of about 3,572 (225)

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

A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb [PDF]

, 2014
Gamma titanium aluminides (γ-TiAl) display significantly improved high temperature mechanical properties over conventional titanium alloys. Due to their low densities, these alloys are increasingly becoming strong candidates to replace nickel-base ...
Mark Whittaker, Will Harrison, Zak Abdallah   +2 more
core   +3 more sources

Microstrain Analysis of Titanium Aluminides [PDF]

Materials Science Forum, 2010
The aeronautic and automotive industries have shown a renewed interest in TiAl based alloys. The main reasons for such an interest are their low density (~3,8g/cm3), a good stiffness and a high strength for temperatures up to 750°C. However, these alloys exhibit, in their polycrystalline form, a poor ductility at room temperature with widely scattered ...
E. Héripré, D. Caldemaison, A. Roos, J. Crépin   +3 more
openaire   +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

Corrosion Behavior of a Thermally Oxidized Orto-Titanium Aluminide in Synthetic Seawater

International Journal of Electrochemical Science, 2015
Corrosion behavior of the Ti-22Al-25Nb alloy, thermally oxidized at 850 °C for 1 h, 10 h and 20 h, respectively was studied in synthetic seawater. SEM, XRD and Raman analysis confirm the presence of mostly of the rutile niobian compound, Ti0.952Nb0.048O2
M. Marcu, A. Banu, E.M. Anghel, A. Paraschiv   +3 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

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

Microstructure and oxide particle stability in a novel ODS γ-TiAl alloy processed by spark plasma sintering and laser additive manufacturing [PDF]

, 2017
In this work, a novel oxide dispersion strengthened titanium aluminide alloy (Ti-45Al-3Nb-
Barras, J, Bauer, T, Colella, A, Dasargyri, G, Dawson, K, Hauser, C, Kenel, C, Leinenbach, C, Spierings, AB, Tatlock, GJ, Wegener, K   +10 more
core   +1 more source

Oxidation behavior of titanium aluminides

Le Journal de Physique IV, 1993
Results from an ongoing study of the high temperature oxidation of intermetallic compounds in the Ti-Al system are presented. The oxidation behavior of alloys based on TiAl (γ) has been found to be extremely complex depending on temperature and atmosphere composition.
Meier, G., Pettit, F., Hu, S.
openaire   +3 more sources

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