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Journal articles on the topic 'Quench'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Yang, Haoyang, Biao Zhang, Wentao Zhong, Zhisheng Fu, and Zhiqiang Fan. "Modification of the Acyl Chloride Quench-Labeling Method for Counting Active Sites in Catalytic Olefin Polymerization." Catalysts 11, no. 6 (2021): 683. http://dx.doi.org/10.3390/catal11060683.

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The reliable and efficient counting of active sites in catalytic olefin polymerization has been realized by using acyl chloride as the quench-labeling agent. However, the molar ratio of acyl chloride to the alkylaluminum cocatalyst must be larger than 1 in order to completely depress side reactions between the quencher and Al-polymeryl that is formed via chain transfer reaction. In this work, a tetrahydrofuran/thiophene-2-carbonyl chloride (THF/TPCC) mixture was used as the quenching agent when counting the active sites of propylene polymerization catalyzed by MgCl2/Di/TiCl4 (Di = internal ele

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2

Xu, Dao Kui, Paul A. Rometsch, Hua Chen, and Barry C. Muddle. "Influence of Solution Treatment on Microstructure and Quench Cracking in a Water-Quenched Aluminium Alloy 7150." Materials Science Forum 654-656 (June 2010): 934–37. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.934.

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In this work, the influence of multi-step solution (MSS) treatments on the constituent particle dissolution, overheating and associated quench cracking behaviour in room temperature water-quenched 7150 Al alloy has been investigated. For comparison, the microstructure and quench cracking behaviour of single step solution treated samples water-quenched from 505°C were also investigated. Based on optical microscopy of differently quenched samples, the quench cracking mode and the influence of overheating of constituents on the quench cracking behaviour have been demonstrated. The results reveal

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3

Noguchi, So, and Seok Beom Kim. "Stability of Toroidal SMES Using YBCO Tapes for Simultaneous Quench of a few Coils." Materials Science Forum 670 (December 2010): 3–10. http://dx.doi.org/10.4028/www.scientific.net/msf.670.3.

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We have investigated the stability of 2.0 GJ toroidal HTS-SMES, which consists of 90 element coils wound from YBCO tape. If one or more element coils are quenched, the storage energy reduces due to change of the magnetic field distribution. A series of quench for some element coils may occur, when the energy of the quenched coil cannot be consumed adequately. The simultaneous quench of some element coil may cause the system down. Therefore, it is necessary to investigate the simultaneous quench properties.

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4

Chen, Lei, Zhidong Zhang, and Zhaoxin Liang. "Non-equilibrium dynamics of an ultracold Bose gas under multi-pulsed interaction quenches." Modern Physics Letters B 30, no. 30 (2016): 1650367. http://dx.doi.org/10.1142/s021798491650367x.

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We investigate the non-equilibrium properties of a weakly interacting Bose gas subjected to a multi-pulsed quench at zero temperature, where the interaction parameter in the Hamiltonian system switches between values [Formula: see text] and [Formula: see text] for multiple times. The one-body and two-body correlation functions as well as Tan’s contact are calculated. The quench induced excitations are shown to increase with the number of quenches for both [Formula: see text] and [Formula: see text]. This implies the possibility to use multi-pulsed quantum quench as a more powerful way as compa

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5

Afrasiar, Mir, Jaydeep Kumar Basak, Bidyut Dey, Kunal Pal, and Kuntal Pal. "Time evolution of spread complexity in quenched Lipkin–Meshkov–Glick model." Journal of Statistical Mechanics: Theory and Experiment 2023, no. 10 (2023): 103101. http://dx.doi.org/10.1088/1742-5468/ad0032.

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Abstract We use the spread complexity (SC) of a time-evolved state after a sudden quantum quench in the Lipkin–Meshkov–Glick (LMG) model prepared in the ground state as a probe of the quantum phase transition when the system is quenched toward the critical point. By studying the growth of the effective number of elements of the Krylov basis that contributes to the SC more than a preassigned cutoff, we show how the two phases of the LMG model can be distinguished. We also explore the time evolution of spread entropy after both non-critical and critical quenches. We show that the sum contributin

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6

Kuić, Domagoj, Alemka Knapp, and Diana Šaponja-Milutinović. "Finite Time Path Field Theory and a New Type of Universal Quantum Spin Chain Quench Behavior." Universe 11, no. 7 (2025): 230. https://doi.org/10.3390/universe11070230.

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We discuss different quench protocols for Ising and XY spin chains in a transverse magnetic field. With a sudden local magnetic field quench as a starting point, we generalize our approach to a large class of local non-sudden quenches. Using finite time path field theory (FTPFT) perturbative methods, we show that the difference between the sudden quench and a class of quenches with non-sudden switching on the perturbation vanishes exponentially with time, apart from non-substantial modifications that are systematically accounted for. As the consequence of causality and analytic properties of f

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Wu, Lifeng, Weiming Long, Qinle Hao, et al. "Research on 40Cr Laser Quenching Process for Guide Rail." Journal of Physics: Conference Series 2566, no. 1 (2023): 012100. http://dx.doi.org/10.1088/1742-6596/2566/1/012100.

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Abstract In this study, the use of laser quenching was explored as a method of surface strengthening for 40Cr steel utilized in machine tool guideways. The impact of various process parameters, including laser power, scanning speed, and spot radius, on the hardness and depth of the quenched layer was evaluated. The results indicated that the optimal process parameters were a laser power of 2000 W, a scanning speed of 20 mm/s, and a spot radius of 3 mm, which resulted in a maximum quenched layer hardness of 889 HV, an average quenched layer hardness of 764 HV, and a quenched layer depth of 0.7

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8

Rossi, Lorenzo, Fausto Rossi, and Fabrizio Dolcini. "Real-space effects of a quench in the Su–Schrieffer–Heeger model and elusive dynamical appearance of the topological edge states." New Journal of Physics 24, no. 1 (2022): 013011. http://dx.doi.org/10.1088/1367-2630/ac3cf6.

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Abstract The topological phase of the Su–Schrieffer–Heeger (SSH) model is known to exhibit two edge states that are topologically protected by the chiral symmetry. We demonstrate that, for any parameter quench performed on the half-filled SSH chain, the occupancy of each lattice site remains locked to 1/2 at any time, due to the additional time-reversal and charge conjugation symmetries. In particular, for a quench from the trivial to the topological phase, no signature of the topological edge states appears in real-space occupancies, independently of the quench protocol, the temperature of th

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9

Mariotto, S., and M. Sorbi. "Quench position reconstruction through harmonic field analysis in superconducting magnets." Superconductor Science and Technology 35, no. 1 (2021): 015006. http://dx.doi.org/10.1088/1361-6668/ac39e8.

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Abstract The performances of superconducting magnets for particle accelerators are limited by instabilities or disturbances which lead to the transition of the superconducting material to the normal resistive state and the activation of the quench protection system to prevent damage to the magnet. To locate the position of the state transition, voltage taps or quench antennas are the most commonly used technologies for their reliability and accuracy. However, during the production phase of a magnet, the number of voltage taps is commonly reduced to simplify the construction process and quench

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10

Hunkel, M., Th Lübben, F. Hoffmann, and P. Mayr. "Using the jominy end-quench test for validation of thermo-metallurgical model parameters." Journal de Physique IV 120 (December 2004): 571–79. http://dx.doi.org/10.1051/jp4:2004120066.

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One of the most popular tests to determine the hardenability of steels is the Jominy-End-Quench-Test. Moreover this test is useful for simulation testing, too. In this paper the determination of heat transfer fluxes over the quenched surface as well as over the peripheral surface is described. The result is used for simulations of the Jominy-End-Quench-Test for two melts of SAE 52100 (100 Cr 6). One of these was taken from literature, one was used for experiments in IWT. Though transformation behaviors differ in an extreme way, the Jominy-End-Quench-Test can be simulated for both steels with g

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11

Ye, Shengping, Kanghua Chen, Li Liu, Songyi Chen, and Changjun Zhu. "Prediction and Experimental of Yield Strengths of As-Quenched 7050 Aluminum Alloy Thick Plates after Continuous Quench Cooling." Metals 10, no. 1 (2019): 26. http://dx.doi.org/10.3390/met10010026.

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The aim of this study was to predict the yield strength of as-quenched aluminum alloys according to their continuous quench cooling path. Our model was established within the framework of quench factor analysis (QFA) by representing a quenching curve as a series of consecutive isothermal transformation events and adding the yield strength increments after each isothermal step to predict the yield strength after continuous quench cooling. For simplification; it was considered that the effective hardeners during quenching were the nanosized solute clusters formed at low temperatures, whereas the

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12

Saberi, Leila, Samuel Onimpa Alfred, and Mehdi Amiri. "Effects of Quenching on Corrosion and Hardness of Aluminum Alloy 7075-T6." Energies 15, no. 22 (2022): 8391. http://dx.doi.org/10.3390/en15228391.

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Quenching affects the mechanical and corrosion properties of precipitation-hardenable alloys such as aluminum alloy 7075-T6 (AA7075-T6). In this paper, the properties of as-quenched AA7075-T6 are predicted within the framework of quench factor analysis (QFA), using cooling curves obtained from a quench test. Theoretical and computational approaches are used to predict spatial and temporal variations of temperature. The temperature variations are used to predict the quench factor and consequently the material properties. A test is carried out on a block of AA7075-T6 quenched partly in water and

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13

Delfino, Gesualdo. "Quantum quenches with integrable pre-quench dynamics." Journal of Physics A: Mathematical and Theoretical 47, no. 40 (2014): 402001. http://dx.doi.org/10.1088/1751-8113/47/40/402001.

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14

Sohal, Ramanjit, Laimei Nie, Xiao-Qi Sun, and Eduardo Fradkin. "Thermalization of randomly coupled SYK models." Journal of Statistical Mechanics: Theory and Experiment 2022, no. 1 (2022): 013103. http://dx.doi.org/10.1088/1742-5468/ac416b.

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Abstract We investigate the thermalization of Sachdev–Ye–Kitaev (SYK) models coupled via random interactions following quenches from the perspective of entanglement. Previous studies have shown that when a system of two SYK models coupled by random two-body terms is quenched from the thermofield double state with sufficiently low effective temperature, the Rényi entropies do not saturate to the expected thermal values in the large-N limit. Using numerical large-N methods, we first show that the Rényi entropies in a pair SYK models coupled by two-body terms can thermalize, if quenched from a st

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15

Pal, Kuntal, Kunal Pal, Ankit Gill, and Tapobrata Sarkar. "Evolution of circuit complexity in a harmonic chain under multiple quenches." Journal of Statistical Mechanics: Theory and Experiment 2023, no. 5 (2023): 053108. http://dx.doi.org/10.1088/1742-5468/acd4b3.

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Abstract We study Nielsen’s circuit complexity in a periodic harmonic oscillator chain, under single and multiple quenches. This simple system is amenable to analytical computations and yet offers considerable insight into the dynamics of quantum information. For a single quench scenario, we highlight some important differences between our results that explicitly use the wavefunction, as compared to the recently proposed covariance matrix method and point out the consequences. In a multiple quench scenario, the complexity shows remarkably different behaviour compared to the other information t

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16

Babu, K. "Effect of Part Size on Surface Heat Flux during Immersion Quenching." Advanced Materials Research 488-489 (March 2012): 353–57. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.353.

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In this paper, the effect of quench probe diameter on the heat transfer rate during immersion quenching of stainless steel (SS) probes in still water has bee studied. Quench probes of different diameters with an aspect ratio of 2.5 were prepared from SS. These probes were heated to 850 °C and then quenched in water. Time-temperature data were recorded during quenching. The surface heat flux and temperature were estimated based on the inverse heat conduction (IHC) method. The results of the computation showed that the different cooling regimes during quenching in water were significantly affect

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17

Nordala, Phoumiphon, Nurul Khalidah Yusop, Radzali Othman, and Ahmad Badri Ismail. "MICROSTRUCTURE AND MICROHARDNESS OF NANO/ULTRAFINE (n/UFG) GRAINED COLDROLLED 0.06C STEEL." ASEAN Engineering Journal 5, no. 1 (2015): 38–45. http://dx.doi.org/10.11113/aej.v5.15466.

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This present study is aimed to examine the microstructure and microhardness of nano/ultrafine grained (n/UFG) of 0.06C steel which had been cold-rolled, quenched and annealed. The process started with three different initial microstructures with the condition of 1) austenization at 1000°C for 30 min soaking and air cool (AC), 2) austenization at 1000°C for 30 min soaking and ice-water quench (IQ) and, 3) same treated as IQ but the quench specimen was tempered at 750°C for 30 min soaking and icewater quench once again (IQT). All quenched specimen, then cold-rolled by 75% and annealed at differe

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18

Starodubtseva, I. P., and A. N. Pavlenko. "Parameters of temperature disturbance triggering the propagation of the quench front on an extremely overheated surface." Journal of Physics: Conference Series 2119, no. 1 (2021): 012079. http://dx.doi.org/10.1088/1742-6596/2119/1/012079.

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Abstract The results of computational experiments simulating the triggering of the quench front propagation on the superheated vertically oriented metal plates are presented. The plates are quenched by a gravitationally flowing down liquid nitrogen film. The temperature of the test samples at the beginning of the process was higher than the critical temperature and the Leidenfrost temperature, which means that direct long-term liquid-solid contact is impossible. For this reason, the front is initially motionless. As a result of numerical simulation, a dynamic pattern of the quench front propag

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19

Vorster, Willem J. J., M. W. van der Watt, A. M. Venter, E. C. Oliver, and Alexander M. Korsunsky. "Neutron Diffraction Measurement and Finite Element Modelling of Residual Strains Due to Bath and Spray Quenching of AISI 316L Stainless Steel Cylinders." Materials Science Forum 571-572 (March 2008): 137–42. http://dx.doi.org/10.4028/www.scientific.net/msf.571-572.137.

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This paper describes the thermo-elasto-plastic analysis of bath and spray quenched AISI 316L cylinders. A suitably detailed continuum deformation analysis approach presented here is implemented within the framework of commercial Finite Element (FE) package ABAQUS. The results of the numerical analysis are compared with the residual elastic strains measured experimentally using neutron diffraction. The good agreement between measured and modelled residual elastic strains provides a basis for careful analysis of the residual elastic strain development resulting from two different quench methods.

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20

Sasaki, K., T. Ogitsu, N. Ohuchi, and K. Tsuchiya. "Study of quench propagation with quench antennas." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 416, no. 1 (1998): 9–17. http://dx.doi.org/10.1016/s0168-9002(98)00617-2.

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21

Seguí, Concepció. "Kinetics of Reordering in Quenched Ni2Mn0.8Cu0.2Ga Ferromagnetic Shape Memory Alloys." Metals 12, no. 5 (2022): 738. http://dx.doi.org/10.3390/met12050738.

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Quenched Ni2Mn1−xCuxGa ferromagnetic shape memory alloys undergo two consecutive post-quench ordering processes. The kinetics of order recovery has been analysed in detail for Ni2Mn0.8Cu0.2Ga, based on the calorimetric curves obtained during post-quench heating at constant rates. Isoconversional methods have been used to determine the activation energy, the pre-exponential factor, and the reaction model that best fits the two reordering processes. The kinetic analysis has been extended to samples quenched from different temperatures. The kinetic study shows that order improvement processes in

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22

Mishra, Raja K. "EM of rapidly solidified permanent magnets." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 1 (1992): 198–99. http://dx.doi.org/10.1017/s0424820100121399.

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The discovery of a new class of permanent magnets based on Nd2Fe14B phase in the last decade has led to intense research and development efforts aimed at commercial exploitation of the new alloy. The material can be prepared either by rapid solidification or by powder metallurgy techniques and the resulting microstructures are very different. This paper details the microstructure of Nd-Fe-B magnets produced by melt-spinning.In melt spinning, quench rate can be varied easily by changing the rate of rotation of the quench wheel. There is an optimum quench rate when the material shows maximum mag

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23

Riza, R. I., Wahyuaji Narottama Putra, and S. Harjanto. "Cooling Rate Observation in Quenching Process Using Carbon Nanofluids for S45C Carbon Steel." Key Engineering Materials 833 (March 2020): 13–17. http://dx.doi.org/10.4028/www.scientific.net/kem.833.13.

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Quenching process is the most important step in steel heat treatment as this process will determine the properties of the steel such as strength and hardness. Different cooling rate and thermal conductivity provided by the quench medium affect strongly to the mentioned steel properties. Recently, studies for nanoparticle added in the quench medium are developing rapidly. This nanoparticle added fluid is known as nanofluid and could affect the thermal property of the quench medium which ultimately changes the properties of the steel. The nanoparticle composition in nanofluid will affect its the

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24

Hénon, C., G. Pouget, and Timothy Warner. "Exfoliation Corrosion Mechanism: Interplay between Intergranular Corrosion and Stress Corrosion Cracking during Exfoliation Corrosion of AA7449." Materials Science Forum 519-521 (July 2006): 693–98. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.693.

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It is generally considered that exfoliation corrosion is due to the build-up of corrosion products that create a wedging stress that lifts up the surface grains. However, the exfoliation mechanism is still under discussion: possible operating mechanisms include intergranular corrosion of in plane grain boundaries accelerated by the wedging effect, or crack propagation by a “purely” stress corrosion mechanism. The sensitivity to exfoliation corrosion of AA7449 in relation to the intergranular and stress corrosion cracking sensitivity has been addressed in a program of controlled quenches follow

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Theodórsson, Pall. "Balanced-Energy Counting Window for Stable Liquid Scintillation Radiocarbon Dating." Radiocarbon 53, no. 2 (2011): 297–302. http://dx.doi.org/10.1017/s0033822200056563.

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This paper describes an optimal radiocarbon counting window for liquid scintillation (LS) 14C dating that secures for unquenched as well as for heavily quenched dating samples maximal stability of 14C counting efficiency and theoretically minimal quench correction. In high-precision dating, a balanced counting window with fixed channel limits is frequently used, where about 3% of the highest part of the 14C spectrum is sacrificed for high 14C counting stability. The stability is, however, diminished for quenched samples. Therefore, this window is here replaced by a balanced fixed-energy 14C co

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Vignesh Nayak, U., and K. Narayan Prabhu. "Heat Transfer during Immersion Quenching in MWCNT Nanofluids." Materials Science Forum 830-831 (September 2015): 172–76. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.172.

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Quench heat treatment consists of rapid cooling of steel alloys after austenetization by subjecting them to cooling in a suitable cooling medium. At the heart of quench treatment is the transient heat transfer that occurs between the metal surface and the quenchant at their interface. This governs the quality of the component as it influences phase transformation, residual quench stresses and mechanical properties developed. In the present research work, spatially dependent transient heat flux in the axial direction was estimated using cooling curve analyses coupled with inverse heat conductio

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Irsigler, Bernhard, and Tobias Grass. "The quantum annealing gap and quench dynamics in the exact cover problem." Quantum 6 (January 18, 2022): 624. http://dx.doi.org/10.22331/q-2022-01-18-624.

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Quenching and annealing are extreme opposites in the time evolution of a quantum system: Annealing explores equilibrium phases of a Hamiltonian with slowly changing parameters and can be exploited as a tool for solving complex optimization problems. In contrast, quenches are sudden changes of the Hamiltonian, producing a non-equilibrium situation. Here, we investigate the relation between the two cases. Specifically, we show that the minimum of the annealing gap, which is an important bottleneck of quantum annealing algorithms, can be revealed from a dynamical quench parameter which describes

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Milkereit, Benjamin, Marco J. Starink, Paul A. Rometsch, Christoph Schick, and Olaf Kessler. "Review of the Quench Sensitivity of Aluminium Alloys: Analysis of the Kinetics and Nature of Quench-Induced Precipitation." Materials 12, no. 24 (2019): 4083. http://dx.doi.org/10.3390/ma12244083.

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For aluminium alloys, precipitation strengthening is controlled by age-hardening heat treatments, including solution treatment, quenching, and ageing. In terms of technological applications, quenching is considered a critical step, because detrimental quench-induced precipitation must be avoided to exploit the full age-hardening potential of the alloy. The alloy therefore needs to be quenched faster than a critical cooling rate, but slow enough to avoid undesired distortion and residual stresses. These contrary requirements for quenching can only be aligned based on detailed knowledge of the k

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Schaefer, Charley, Stefan Paquay, and Tom C. B. McLeish. "Morphology formation in binary mixtures upon gradual destabilisation." Soft Matter 15, no. 42 (2019): 8450–58. http://dx.doi.org/10.1039/c9sm01344j.

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Phase-separated morphologies that emerge in response to gradual destabilising quenches are affected by thermal fluctuations. This work discusses how the quench rate determines the feature size of the emerging structure.

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Gavrilenko, Maxim, Michael Krawczynski, Philipp Ruprecht, Wenlu Li, and Jeffrey G. Catalano. "The quench control of water estimates in convergent margin magmas." American Mineralogist 104, no. 7 (2019): 936–48. http://dx.doi.org/10.2138/am-2019-6735.

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AbstractHere we present a study on the quenchability of hydrous mafic melts. We show via hydrothermal experiments that the ability to quench a mafic hydrous melt to a homogeneous glass at cooling rates relevant to natural samples has a limit of no more than 9 ± 1 wt% of dissolved H2O in the melt. We performed supra-liquidus experiments on a mafic starting composition at 1–1.5 GPa spanning H2O-undersaturated to H2O-saturated conditions (from ~1 to ~21 wt%). After dissolving H2O and equilibrating, the hydrous mafic melt experiments were quenched. Quenching rates of 20 to 90 K/s at the glass tran

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Gümüşsoy, Aleyna, Onur Gülbaba, Işık Kaya, and Emrah Fahri Özdoğru. "Simulation of Quench Rate by Jominy End Quench Test for 6082 Aluminium Alloys." Key Engineering Materials 988 (September 27, 2024): 11–20. http://dx.doi.org/10.4028/p-sedg1g.

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In the present study, it is aimed to investigate the influence of quench rate on the hardness and electrical conductivity that obtained after artificial aging by using Jominy End Quench test method. The Jominy End Quench test bars were solution heat treated at 560°C for 3 hours. After solution heat treatment, water, spray, and air quenching medias were used in order to obtain different quench rates. After the quench, quench rate determination, hardness and electrical conductivity measurements were performed for three different quenching medias. Then, artificial aging heat treatment were applie

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Xiang, Bin, Lei Gao, Muhammad Junaid, et al. "Effects of Magnetic Fields on Quench Characteristics of Superconducting Tape for Superconducting Fault Current Limiter." Applied Sciences 9, no. 7 (2019): 1466. http://dx.doi.org/10.3390/app9071466.

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In DC systems, DC resistive type superconducting fault current limiters (R-SFCLs) can respond within a few hundred milliseconds and limit the fault current to a very low level to protect the power equipment in DC systems. The main part of R-SFCLs are superconducting tapes. When short-circuit faults occur in the system, the superconducting tapes will quench and become a large quenched resistor to limit the fault current. The surrounding magnetic fields and the magnetic fields caused by the superconducting tapes itself influence the quench characteristics of the superconducting tapes of R-SFCLs.

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Guo, Xing Long. "Multi-Field Coupling Simulation on Quench Process in Superconducting Magnet." Advanced Materials Research 926-930 (May 2014): 3096–99. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.3096.

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Quench protection system is a necessary part in superconducting magnets design. Rational design of quench protection system requires understanding of heat transfer and electromagnetic process in the magnet during quench process. A multi-field coupling model was developed to study quench process. This model sequentially solves two different physics environments, one is thermal physics environment, and the other one is electromagnetic physics environment. This model was applied to simulate one solenoid magnet in practical engineering. The main parameters results during quench process were presen

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Wang, Shudan, Mingzhi Guan, Jiaxiang Chen, Xingzhe Wang, and Youhe Zhou. "A visual and full-field method for detecting quench and normal zone propagation in HTS tapes." Superconductor Science and Technology 35, no. 2 (2021): 025010. http://dx.doi.org/10.1088/1361-6668/ac3f9d.

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Abstract A fast and effective quench detection method is especially challenging in the development of high-field high-temperature superconducting (HTS) magnets for their safe operations and reliably releasing the stored energy during a quench. The occurrence and propagation of a quench are often accompanied by strong thermal and magneto-mechanical responses within superconducting magnets. Aiming to detect a quench in the whole process and capture the thermoelastic behavior associated with it, a new detection technique with a visual and full-field perception based on the digital image correlati

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Jones, A. P., and S. Maaloe. "A miniclave for experiments up to 4 kbar and 1200 °C used to study REE-carbonate glasses." Mineralogical Magazine 52, no. 364 (1988): 57–61. http://dx.doi.org/10.1180/minmag.1988.052.364.05.

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AbstractGlasses quenched from synthetic REE-carbonatite liquids in recent Tuttle bomb experiments require fast cooling rates. To study these glasses further, an internally-heated miniclave has been developed to increase quench rates and extend the operating P-T range of standard Tuttle bombs. The Haskel miniclave can achieve simultaneous P and T of up to 1200°C at 4 kbar for small diameter (1–2 mm) samples. Gas (Argon) pressure is supplied by a small intensifier unit and heating by an internal platinum-wound furnace. Because of the relatively small thermal mass, run temperatures can be reached

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Weriono, Weriono. "Karekteristik Proses Full Annealing Dengan Variasi Media Quench Terhadap Kekuatan Mekanik Aisi 1045." JURNAL UNITEK 11, no. 2 (2020): 166–74. http://dx.doi.org/10.52072/unitek.v11i2.40.

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Baja AISI 1045 biasanya dipakai sebagai komponen automotif yang aplikasinya sering mengalami pembebanan, gesekan dan tekanan. Tujuan penelitian untuk pelunakan sehingga kekuatan Tarik, kekuatan Impak dan kekerasan menjadi lebih baik sehingga dilakukan proses full annealing quench oli dan air. Rata-rata kecepatan pendinginan adalah faktor menentukan kekerasan suatu material. Proses full annealing quench oli adanya pelunakan cukup baik yang menurunkan kekerasan dengan kekerasan tertinggi 3,5 HRC temperatur 8500C sedangkan quench air kekerasan tertinggi 43 HRC temperatur 8000C. Kekuatan impak que

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Tomizawa, Atsushi, Sanny Soedjatmiko Hartanto, Kazuo Uematsu, and Naoaki Shimada. "Crash Characteristics of Partially Quenched Curved Products by Three-Dimensional Hot Bending and Direct Quench." Metals 10, no. 10 (2020): 1322. http://dx.doi.org/10.3390/met10101322.

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Recently, improvement of hybrid and electric vehicle technologies, equipped with batteries, continues to solve energy and environmental problems. Lighter weight and crash safety are required in these vehicles body. In order to meet these requirements, three-dimensional hot bending and direct quench (3DQ) technology, which enables to form hollow tubular automotive parts with a tensile strength of 1470 MPa or over, has been developed. In addition, this technology enables to produce partially quenched automotive parts. In this study, the crash characteristics of 3DQ partially quenched products we

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Lalpoor, Mehdi, Tim Vossen, Michael Xhonneux, and Arne Schlegel. "Investigation of Quench Sensitivity in 6xxx Aluminum Alloys." Materials Science Forum 941 (December 2018): 796–801. http://dx.doi.org/10.4028/www.scientific.net/msf.941.796.

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Quench trials were performed on AA6005A and AA6016 alloys to assess the sensitivity of their tensile properties as well as bendability to quench after solution heat treatment. Results indicate that the tensile properties in T4 and in the paint-baked state (2% pre-strain + 185 °C/20 min) are hardly affected by quench rate as long as the exit temperature (Texit) is sufficiently low. The bendability however, appears to be more sensitive to quench rate, and the sensitivity depends on the chemical composition of the alloy. The alloy with a higher excess Si content exhibits higher sensitivity to nat

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Choudhury, Sayantan, Suman Dey, Rakshit Mandish Gharat, Saptarshi Mandal, and Nilesh Pandey. "Schwinger–Keldysh Path Integral Formalism for a Quenched Quantum Inverted Oscillator." Symmetry 16, no. 10 (2024): 1308. http://dx.doi.org/10.3390/sym16101308.

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In this work, we study the time-dependent behavior of quantum correlations of a system of an inverted oscillator governed by out-of-equilibrium dynamics using the well-known Schwinger–Keldysh formalism in the presence of quantum mechanical quench. Considering a generalized structure of a time-dependent Hamiltonian for an inverted oscillator system, we use the invariant operator method to obtain its eigenstate and continuous energy eigenvalues. Using the expression for the eigenstate, we further derive the most general expression for the generating function as well as the out-of-time-ordered co

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Dong, Fangliang, Dongkeun Park, Wooseung Lee, et al. "On fault-mode phenomenon in no-insulation superconducting magnets: A preventive approach." Applied Physics Letters 121, no. 19 (2022): 194101. http://dx.doi.org/10.1063/5.0122493.

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Here, we present experimental and analytical results of a preventive approach applied to a fault-mode phenomenon caused by electrodes or power-source failure in a no-insulation (NI) high-temperature superconducting REBa2Cu3O7−x (REBCO, RE = rare earth) magnet. It is generally agreed that the NI magnets, at least those of laboratory scale, are self-protected from overheating and, therefore, from quenching, chiefly because of turn-to-turn current bypassing unique to NI. However, these NI magnets do experience unexpected quenches, e.g., when the current through the magnet suddenly drops due to th

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Kim, Hye-Rim, Jungwook Sim, Inji Choi, Seong-Woo Yim, Haigun Lee, and Ok-Bae Hyun. "Quench Development in Bi-2212 Bulk Coils During Quenches." IEEE Transactions on Applied Superconductivity 17, no. 2 (2007): 1875–78. http://dx.doi.org/10.1109/tasc.2007.898485.

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Osten, Julia, Christian Lux, Benjamin Milkereit, Michael Reich, and Olaf Kessler. "Stress Induced Precipitation during Quenching of Aluminium Alloys." Materials Science Forum 877 (November 2016): 159–65. http://dx.doi.org/10.4028/www.scientific.net/msf.877.159.

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Quenching is an important step during age hardening of aluminium alloys. It significantly influences on microstructures, properties, residual stresses and component distortion. Due to high heat transfer, thermal stresses occur in quenched components. I.e., all premature precipitates during undercritical quenching form on condition of mechanical stresses. Opposite, quench sensitivity investigations, e.g. recording of continuous cooling precipitation diagrams, are usually performed in stress-free conditions and may therefore be incomplete. We have developed a new method of thermomechanical analy

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Rontó, Viktória, E. Nagy, Mária Svéda, Kinga Tomolya, F. Varga, and B. Molnár. "Developing Mechanical Properties and Electrical Conductivity of Cu Alloys by Jominy End-Quench Test." Materials Science Forum 537-538 (February 2007): 55–62. http://dx.doi.org/10.4028/www.scientific.net/msf.537-538.55.

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Copper alloys have many properties, which make them suitable in wide-ranging applications in all the engineering industries. For the investigated alloys the most important properties are hardness, strength and electrical conductivity. Precipitation hardenable alloys were studied by Jominy end-quench test, in order to examine the change of hardness, electrical conductivity and microstructure as a length of the test bar (i.e. cooling rate). In the first step samples were solution treated at different temperatures, then water quenched followed by aging. Cold-work after quench was applied in some

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Dou, Rui Feng, Zhi Wen, Xun Liang Liu, and Guo Feng Lou. "Heat Transfer Model of Roller Quench in Strip Continuous Heat Treatment Process." Advanced Materials Research 160-162 (November 2010): 536–43. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.536.

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Roller quench is a rapid cooling technique used in strip continuous heat-treatment process, which is one of the most important processes in producing cold-rolled strip steel. Heat transports by contact heat transfer in roller quench, for the complex characteristics of contact heat transfer, roller quench is very difficulty to simulate. In this paper a roller quench heat transfer model is build based on Fourier-Kirchhoff differential equations. A new correlation function of contact conductance is developed from statistical mechanics model results by least square method. This correlation functio

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Li, Chengbo, and Dongdong Chen. "Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements." Metals 9, no. 9 (2019): 965. http://dx.doi.org/10.3390/met9090965.

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The quench sensitivity of 7085 aluminum alloy with different contents of the main alloying elements (Zn, Mg and Cu) was investigated using time-temperature-transformation (TTT) curves and end quenching experiments. Then, the quenching microstructure was analyzed using transmission electron microscopy. With increasing the contents of the main alloying elements, the transitions and nose temperatures of the TTT curves are obviously increased, while the incubation time of 0.5% η (MgZn2) phase precipitation content is decreased. In addition, as the contents of the main alloying elements decrease, t

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Michalik, Marek, Monika Kasina, Bartłomiej Kajdas, and Piotr Kowalski. "Form of the Occurrence of Aluminium in Municipal Solid Waste Incineration Residue—Even Hydrogen Is Lost." Energies 15, no. 21 (2022): 8186. http://dx.doi.org/10.3390/en15218186.

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In the bottom ash (BA) of municipal solid waste incineration, the content of iron and aluminum is relatively high. The efficiency of eddy current extraction of non-ferrous metals (including aluminium) routinely used in incineration plants is limited. The determination of the form of occurrence of aluminium or aluminium-rich components in BA is important in terms of its recovery or utilisation. BA from a newly built incineration plant in Poland was analysed using chemical analysis, X-ray diffraction, optical microscopy, and scanning electron microscopy with chemical microanalysis. Samples of wa

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Dimitrijevic, M., M. Posarac, R. Jancic-Heinemman, J. Majstorovic, T. Volkov-Husovic, and B. Matovic. "Thermal shock resistance of ceramic fibre composites characterized by non-destructive methods." Processing and Application of Ceramics 2, no. 2 (2008): 115–19. http://dx.doi.org/10.2298/pac0802115d.

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Alumina based ceramic fibres and alumina based ceramic were used to produce composite material. Behaviour of composite ceramics after thermal shock treatments was investigated. Thermal shock of the samples was evaluated using water quench test. Surface deterioration level of samples was monitored by image analysis before and after a number of quenching cycles. Ultrasonic measurements were done on samples after quench tests. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities. Strengths deterioration was calculated using th

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Richtmann, L., L. Bortot, E. Ravaioli, C. Wiesner, and D. Wollmann. "Beam-based reconstruction of the shielded quench-heater fields for the LHC main dipoles." Journal of Physics: Conference Series 2420, no. 1 (2023): 012005. http://dx.doi.org/10.1088/1742-6596/2420/1/012005.

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Abstract Small orbit oscillations of the circulating particle beams have been observed immediately following quenches in the LHC’s superconducting main dipole magnets. Magnetic fields generated during the discharge into the quench heaters were identified as the cause. Since the resulting, shielded field inside the beam screen cannot be measured in-situ, the time evolution of the field has to be reconstructed from the measured beam excursions. In this paper, the field-reconstruction method using rotation in normalized phase space and the optimized fitting algorithm are described. The resulting

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Seguí, Concepció. "Sequence and Characteristics of Atomic Ordering in Ni2Mn1−xCuxGa Ferromagnetic Shape Memory Alloys." Materials 15, no. 23 (2022): 8529. http://dx.doi.org/10.3390/ma15238529.

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Post-quench atomic reordering processes undergone by Ni2Mn1−xCuxGa alloys have been characterized in detail. The obtained results corroborate the hypothesis that proposes an atomic ordering process additional to the B2↔L21 one, consisting of the relocation in the Mn sublattice of Cu atoms misplaced by quench in the Ni sublattice. In addition, the results suggest that the ordering of the Cu atoms and the L21 ordering can occur in different sequences depending on the starting state of order. The analysis of the saturation magnetization validates the occurrence of two types of atomic movements; t

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Waterman, Christopher A. "Chop and Quench." African Arts 31, no. 1 (1998): 1. http://dx.doi.org/10.2307/3337615.

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