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Journal articles on the topic 'Alloy-nozzle interaction'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Lebedeva, Yu E., A. N. Afanasev-Hodikin, G. M. Prokopchenko, A. A. Shavnev та D. I. Serebryakov. "OBTAINING OF EXPERIMENTAL CONSTRUCTIONALLY SIMILAR SAMPLE OF THE NOZZLE ASSEMBLY SECTOR AND CARRYING OUT ITS TESTS AT TEMPERATURE OF 1500 °С". Proceedings of VIAM, № 10 (2020): 51–62. http://dx.doi.org/10.18577/2307-6046-2020-0-10-51-62.

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The interaction of the SiC–SiCw–B4C–AlN system ceramic composite material (CCM) with the EP648 alloy in the process of high-temperature brazing was studied. The smallest erosion activity both in relation to CCM, and to the EP648 alloy, has HMP solder VPr50. An experimental constructionally similar sample of the nozzle assembly sector was made using uncooled nozzle blade prototypes from CCM. Tests of an experimental constructionally similar sample of the nozzle assembly sector at a temperature of 1500 °C were carried out. No traces of material ablation from the surface of the CMC were found.

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2

Schricker, Klaus, Andreas Baumann, and Jean Pierre Bergmann. "Local Shielding Gas Supply in Remote Laser Beam Welding." Journal of Manufacturing and Materials Processing 5, no. 4 (2021): 139. http://dx.doi.org/10.3390/jmmp5040139.

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The use of shielding gases in laser beam welding is of particular interest for materials interacting with ambient oxygen, e.g., copper, titanium or high-alloy steels. These materials are often processed by remote laser beam welding where short welds (e.g., up to 40 mm seam length) are commonly used. Such setups prevent gas nozzles from being carried along on the optics due to the scanner application and a small area needs to be served locally with inert gas. The article provides systematic investigations into the interaction of laser beam processes and parameters of inert gas supply based on a

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3

Bogdan-Chudy, Marta. "TRIBOLOGICAL ANALYSES OF A TiCN-Al2O3-COATED CEMENTEDCARBIDE-Ti6Al4V ALLOY CONTACT UNDER VARIABLECOOLING AND LUBRICATION CONDITIONS." Tribologia 309, no. 3 (2024): 39–48. https://doi.org/10.5604/01.3001.0054.9071.

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The paper presents the results of tribological studies on the Ti6Al4V titanium alloy-TiCN-Al2O3-coatedcemented carbide contact. The experiments were conducted using a pin-on-disc tribometer, enabling theanalysis of the tribological pair interaction in a sample-counter-sample system. The tribological investigationsincluded conditions of dry friction, minimal quantity lubrication (MQL), and cooling using a nozzle. Theresults of the studies focused on the coefficient of friction and temperature at the contact area of the tribologicalpair. Additionally, the evolution of the surface layer structure

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4

Arun, A., S. Santosh, and K. Rajkumar. "Investigations on the interaction of laser parameters for efficient microdrilling of NiTiV smart alloy system." Laser Physics 34, no. 8 (2024): 085101. http://dx.doi.org/10.1088/1555-6611/ad552e.

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Abstract Ni–Ti shape memory alloys (SMAs) are popular in current research due to their usefulness and mechanical properties. At different temperatures, Ni–Ti alloys transition from austenite to martensite. To restore high-temperature memory in nickel-titanium SMAs, vanadium (V) is added as an alloying element. For Ni–Ti-based SMAs, the fiber laser is one of the best machining procedures for bio-implants, actuators, and aircraft engine parts. Using a Box–Behnken design to experiment with laser power, nozzle distance, cutting speed, and frequency, this study examines fiber laser micro-drilled Ni

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5

Qin, W. Y., X. Y. Chen, Z. L. Jiang, Z. D. Lin, and H. M. Chen. "Study on the Magnetic Properties and Domain Structure of NdFeNbZrB Nanocomposite Permanent Magnets." Materials Science Forum 539-543 (March 2007): 3303–8. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.3303.

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A new kind of nanocomposite rare-earth magnets of Nd2Fe14B/ α-Fe were prepared by melt-spinning method. Effects of alloying element and processing parameter on the microstructure and magnetic properties of nanocomposite materials have been investigated. Zr is effective to enhance coercivity of alloys because of a refinement of grains, so that in alloy of Zr content with 1.0 at% (Zr1.0) has the smallest grain size of 17 nm and therefore causes the highest intrinsic coercivity . Addition of Zr can also enhance the ability of amorphous-forming. The combination of adding of Zr and using a smaller

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6

Diegel, Christian, Thorsten Mattulat, Klaus Schricker, et al. "Interaction between Local Shielding Gas Supply and Laser Spot Size on Spatter Formation in Laser Beam Welding of AISI 304." Applied Sciences 13, no. 18 (2023): 10507. http://dx.doi.org/10.3390/app131810507.

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Background. Spatter formation at melt pool swellings at the keyhole rear wall is a major issue for laser deep penetration welding at speeds beyond 8 m/min. A gas nozzle directed towards the keyhole, that supplies shielding gas locally, is advantageous in reducing spatter formation due to its simple utilization. However, the relationship between local gas flow, laser spot size, and the resulting effects on spatter formation at high welding speeds up to 16 m/min are not yet fully understood. Methods. The high-alloy steel AISI 304 (1.4301/X5CrNi18-10) was welded with laser spot sizes of 300 μm an

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7

Flögel, Karsten, and Fabian Faltin. "Waterjet Turning of Titanium Alloys." Advanced Materials Research 769 (September 2013): 77–84. http://dx.doi.org/10.4028/www.scientific.net/amr.769.77.

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Titanium alloys offer outstanding properties with regard to its strength to density ratio and a good corrosive resistance in air atmospheres. Substantial advancements could be made by using titanium alloys, in particular for applications in the aerospace industry and medical engineering. However, no product innovation is possible without an appropriate machining technology. For example, low thermal conductivity and hot hardness lead to limitations regarding the applicable machining parameters, particularly for continuous cutting operations. Turning of high performance materials sets high deman

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8

Dubovyk, Viktor, Olexandr Puzyrov, Yuriy Nevdakha, and Viktor Pukalov. "Experimental Studies of a Two-jet Method of Protection of Molten Metal During Surfacing in CO2." Central Ukrainian Scientific Bulletin. Technical Sciences 1, no. 5(36) (2022): 154–60. http://dx.doi.org/10.32515/2664-262x.2022.5(36).1.154-160.

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In the industry of restoration of details and production of designs from low-carbon and low-alloy steels the technology of welding by an electrode of continuous section which melts in the environment of carbon dioxide has become widespread. Welding and surfacing in shielding gases ranks first in terms of the amount of weld metal and manufactured products among other mechanized arc welding methods. Today, the need for wires for welding in shielding gases is about 200 thousand tons. Today's requirements indicate that welding technologies in shielding gases will occupy a leading position for the

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9

Кухтин, Юрий Петрович, Петр Петрович Варварук та Вячеслав Михайлович Меркулов. "ЗНИЖЕННЯ РІВНЯ ДИНАМІЧНИХ НАПРУГ У РОБОЧИХ ЛОПАТКАХ ТУРБІНИ ЗА РАХУНОК ВИБОРУ ГЕОМЕТРІЇ СОПЛОВОГО АПАРАТУ". Aerospace technic and technology, № 7 (10 листопада 2018): 40–47. http://dx.doi.org/10.32620/aktt.2018.7.06.

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Interacting between the next rows of the turbine creates a circumferential flow non-uniformity, which leads to origination of resonance dynamic stresses on rotor bladings with frequencies z·fn, where fn - a rotor rotation frequency, z - number of stator vanes. At projection and development of the engine is not always possible detuning from a resonance as the spectrum of eigenfrequencies of rotor blades can be wide enough in relation to a band of working rotor speed. Reduction of exterior exciting forces can be one of ways of a reduction of dynamic stresses in rotor blades. For attenuation of t

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10

Nag, Akash, Amit Rai Dixit, Jana Petrů, Petra Váňová, Kateřina Konečná, and Sergej Hloch. "MAXIMIZATION OF WEAR RATES THROUGH EFFECTIVE CONFIGURATION OF STANDOFF DISTANCE AND HYDRAULIC PARAMETERS IN ULTRASONIC PULSATING WATERJET." Facta Universitatis, Series: Mechanical Engineering, July 31, 2024, 165. http://dx.doi.org/10.22190/fume220523045n.

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A pulsating waterjet is a technological modification of a conventional waterjet that utilizes ultrasonic vibrations to generate a modulated jet, resulting in repetitive fatigue loading of the material. The erosion efficiency of the ultrasonic pulsating waterjet is majorly determined by the hydraulic factors and its interaction with standoff distance. However, the dependency of the wear rates on different hydraulic factors and formulation of an implicit prediction model for determining effective standoff distance is still not present to date. Therefore, in this study, the combined dependency of

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11

Sergi, Claudia, Alessandra Martucci, Manuela Galati, et al. "Ti6Al4V Components by Bound Metal Deposition and Competitive with Metal Injection Molded Parts: Optimization of the Printing Parameters." Advanced Engineering Materials, April 17, 2025. https://doi.org/10.1002/adem.202402813.

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Bound metal deposition (BMD) is a valid 3D printing solution from an economic perspective. Still, the resulting mechanical properties are intrinsically lower than selective laser melting and electron beam melting ones and, in some cases, are also lower than metal injection molding (MIM). The optimization of the printing parameters is fundamental to level off this issue and to ensure mechanical performance competitive with MIM ones. In light of this, the present work focuses, for the first time, on the optimization of the printing parameters for a Ti6Al4V alloy. The effect of three fundamental

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12

Calkins, Frederick T., and James H. Mabe. "Shape Memory Alloy Based Morphing Aerostructures." Journal of Mechanical Design 132, no. 11 (2010). http://dx.doi.org/10.1115/1.4001119.

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In order to continue the current rate of improvements in aircraft performance, aircraft and components which are continuously optimized for all flight conditions, will be needed. Toward this goal morphing-capable, adaptive structures based on shape memory alloy (SMA) technology that enable component and system-level optimization at multiple flight conditions are being developed. This paper reviews five large-scale SMA based technology programs initiated by The Boeing Company. The SAMPSON smart inlet program showed that fully integrated SMA wire bundles could provide a fighter aircraft with a v

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13

Patil, Dhanush, Siying Liu, Dharneedar Ravichandran, et al. "Versatile Patterning of Liquid Metal via Multiphase 3D Printing." Small, June 8, 2024. http://dx.doi.org/10.1002/smll.202402432.

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AbstractThis paper presents a scalable and straightforward technique for the immediate patterning of liquid metal/polymer composites via multiphase 3D printing. Capitalizing on the polymer's capacity to confine liquid metal (LM) into diverse patterns. The interplay between distinctive fluidic properties of liquid metal and its self‐passivating oxide layer within an oxidative environment ensures a resilient interface with the polymer matrix. This study introduces an inventive approach for achieving versatile patterns in eutectic gallium indium (EGaIn), a gallium alloy. The efficacy of pattern f

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14

ElRassi, J., S. Holum, L. Sombaert, et al. "Upgraded VKI Plasmatron capabilities with supersonic nozzles for extended material characterization methods." SAMPE JOURNAL 60, no. 2 (2024). http://dx.doi.org/10.33599/sj.v60no2.02.

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In the domain of re-entry and hypersonic vehicles, advancing material development requires comprehensive material testing to thoroughly understand the aero-thermo-chemistry at the surface. This paper overviews hypersonic, high-temperature activities conducted at the von Karman Institute for Fluid Dynamics (VKI) Plasmatron facility, employing three recently developed supersonic nozzles. These activities aim to augment VKI’s experimental and numerical capabilities in high-temperature material research, contributing to a deeper understanding of the chemical surface interactions, at stagnation and

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15

Salehnasab, Behnam, and Sarvnaz Hashem-Sharifi. "Low cycle fatigue behavior and life prediction of a directionally solidified alloy." Journal of Design Against Fatigue 2, no. 1 (2024). http://dx.doi.org/10.62676/ygye8n63.

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Alloys used in engines are subjected to challenging environments characterized by thermal and mechanical cyclic loadings during start-up and shut-down processes. These conditions can significantly increase the occurrence of fatigue failure mechanisms. Therefore, this study focuses on investigating the low cycle fatigue (LCF) behavior of directionally-solidified alloy at two distinct temperatures, namely 600 °C and 800 °C. Strain-controlled LCF tests were conducted at the specified temperatures, utilizing constant total strain amplitudes of 0.4%, 0.6%, 0.8%, and 1% under a totally reversed load

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16

Arun Prakash, Jagadeesan, Shanmugakani Senthil Kumar, Subbiah Rathinavel, and Thangarajan Sivasankaran Senthilkumar. "Comprehensive parametric investigation of hot air erosion behavior in 3D-printed Scalmalloy." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, December 26, 2024. https://doi.org/10.1177/09544089241306791.

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This study explores the erosion characteristics of 3D-printed Scalmalloy, an advanced aluminum–magnesium–scandium alloy, through a comprehensive investigation of varied process parameters. The erosion behavior was quantified through careful measurement of material loss, while the morphological changes on the surface were analyzed using scanning electron microscope (SEM) analysis. As the discharge of erodent increases, the kinetic energy of the particles is heightened, leading to augmented material removal and subsequently causing elevated erosion rates on the workpiece. An increase in the nozz

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