The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform
Gian Paolo Beretta - One of the best experts on this subject based on the ideXlab platform.
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Effects of Quenching Rate and viscosity on spinodal decomposition.
Physical Review E, 2006Co-Authors: Pietro Poesio, Roberto Mauri, G. Cominardi, Adriano Maria Lezzi, Gian Paolo BerettaAbstract:Spinodal decomposition of deeply quenched mixtures is studied experimentally, with particular emphasis on the domain growth Rate during the late stage of coarsening. We provide some experimental evidence that at high Peclet number, the process is isotropic and the domain growth is linear in time, even at finite Quenching Rates. In fact, the Quenching Rate appears to influence the magnitude of the growth Rate, but not its scaling law. In the second part of the work we analyze the effect of viscosity on the growth Rate. As predicted by the diffuse interface model, we do not find any effect of viscosity on the growth Rate of the nucleating drops, although, as expected, the viscosity of the continuous phase does influence the settling speed and thus the total separation time.
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Effects of Quenching Rate and viscosity on spinodal decomposition.
Physical review. E Statistical nonlinear and soft matter physics, 2006Co-Authors: Pietro Poesio, G. Cominardi, Adriano Maria Lezzi, R Mauri, Gian Paolo BerettaAbstract:Spinodal decomposition of deeply quenched mixtures is studied experimentally, with particular emphasis on the domain growth Rate during the late stage of coarsening. We provide some experimental evidence that at high Péclet number, the process is isotropic and the domain growth is linear in time, even at finite Quenching Rates. In fact, the Quenching Rate appears to influence the magnitude of the growth Rate, but not its scaling law. In the second part of the work we analyze the effect of viscosity on the growth Rate. As predicted by the diffuse interface model, we do not find any effect of viscosity on the growth Rate of the nucleating drops, although, as expected, the viscosity of the continuous phase does influence the settling speed and thus the total separation time.
Shengdan Liu - One of the best experts on this subject based on the ideXlab platform.
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effect of Quenching Rate on strengthening behavior of an al zn mg cu alloy during natural ageing
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2020Co-Authors: Shengdan Liu, Menghan Zhang, Qianqian Zhu, Hui Song, Lingfei Cao, Malcolm J CouperAbstract:Abstract The effect of Quenching Rate on strengthening behavior of an Al-Zn-Mg-Cu alloy 7085 during natural ageing has been investigated by hardness, tensile testing, differential scanning calorimetry, transmission electron microscopy, high resolution transmission electron microscopy and three dimensional atom probe. Quench-induced Y phase forms in the air-cooled condition and contributes a remarkable 100 MPa to the as-quenched strength. The air-cooled condition continues to exhibit higher hardness and strength than for the rapid, water-cooled condition during natural ageing for up to about 30000 h. With the increase of natural ageing time, the hardness difference tends to decrease slowly within the first 0.5 h, then sharply until about 20 h, and finally approaches a constant, small difference. The reasons for this unusual quench sensitivity are discussed based on the different precipitation features arising during Quenching and natural ageing.
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Effect of Quenching Rate on the Exfoliation Corrosion of 7020 Aluminum Plate
High Performance Structural Materials, 2018Co-Authors: Shengdan Liu, Yunlai Deng, Chen Guo, Zhenshen Yang, Huaqiang Lin, Lin Sun, Xinming ZhangAbstract:The exfoliation corrosion resistance of 7020 aluminum plate treated with different Quenching Rates after solution treatment was investigated through standard exfoliation corrosion (EFC) immersion tests combined with scanning electron microscopy (SEM). The results showed that the EFC resistance of this alloy plate decreased with the decrease of Quenching Rate. The corrosion rank ranged from EA to ED, and the maximum corrosion depth ranged from 388 to 570 μm.
Bénédicte Kapusta - One of the best experts on this subject based on the ideXlab platform.
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Correlation between Quenching Rate, mechanical properties and microstructure in thick sections of Al Mg Si( Cu) alloys
Materials Science and Engineering: A, 2019Co-Authors: Victor Garric, Kimberly Colas, Patricia Donnadieu, Gilles Renou, Stéphane Urvoy, Bénédicte KapustaAbstract:Thermal treatment is key for the mechanical behavior of 6000 series aluminum alloys. Numerous studies have therefore been devoted to the impact of aging treatment parameters like time and temperature. However the influence of Quenching Rate is rather poorly documented while it could be of primary interest for applications requiring thick sections. Using a series of AleMgeSi(eCu) specimens quenched in various fluids, we propose to monitor and describe the quench properly and study the impact of the Quenching Rate on the microstructure and mechanical properties obtained after aging. Acknowledging the critical quench Rate to be about 10°C s −1 , Quenching was performed in various Quenching fluids (water, air and oil) on 10 cm side 6061 alloy cubes. The quench Rate was evaluated by thermocouples placed at several locations and by numerical modeling. For each temper, the microstructure and mechanical behavior has been studied at local and macro scales to highlight some correlations. The combination of transmission electron microscopy imaging and related image analysis, chemical and crystallographic mapping, microhardness maps and tensile tests has pointed out many micro-structural differences at nanoscale and inhomogeneous mechanical behavior we strived to explain and correlate.
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Correlation between Quenching Rate, mechanical properties and microstructure in thick sections of AlMgSi(Cu) alloys
Materials Science and Engineering: A, 2019Co-Authors: Victor Garric, Kimberly Colas, Patricia Donnadieu, Gilles Renou, Stéphane Urvoy, Bénédicte KapustaAbstract:Abstract Thermal treatment is key for the mechanical behavior of 6000 series aluminum alloys. Numerous studies have therefore been devoted to the impact of aging treatment parameters like time and temperature. However the influence of Quenching Rate is rather poorly documented while it could be of primary interest for applications requiring thick sections. Using a series of Al Mg Si( Cu) specimens quenched in various fluids, we propose to monitor and describe the quench properly and study the impact of the Quenching Rate on the microstructure and mechanical properties obtained after aging. Acknowledging the critical quench Rate to be about 10 °C s−1, Quenching was performed in various Quenching fluids (water, air and oil) on 10 cm side 6061 alloy cubes. The quench Rate was evaluated by thermocouples placed at several locations and by numerical modeling. For each temper, the microstructure and mechanical behavior has been studied at local and macro scales to highlight some correlations. The combination of transmission electron microscopy imaging and related image analysis, chemical and crystallographic mapping, microhardness maps and tensile tests has pointed out many microstructural differences at nanoscale and inhomogeneous mechanical behavior we strived to explain and correlate.
Pietro Poesio - One of the best experts on this subject based on the ideXlab platform.
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Effects of Quenching Rate and viscosity on spinodal decomposition.
Physical Review E, 2006Co-Authors: Pietro Poesio, Roberto Mauri, G. Cominardi, Adriano Maria Lezzi, Gian Paolo BerettaAbstract:Spinodal decomposition of deeply quenched mixtures is studied experimentally, with particular emphasis on the domain growth Rate during the late stage of coarsening. We provide some experimental evidence that at high Peclet number, the process is isotropic and the domain growth is linear in time, even at finite Quenching Rates. In fact, the Quenching Rate appears to influence the magnitude of the growth Rate, but not its scaling law. In the second part of the work we analyze the effect of viscosity on the growth Rate. As predicted by the diffuse interface model, we do not find any effect of viscosity on the growth Rate of the nucleating drops, although, as expected, the viscosity of the continuous phase does influence the settling speed and thus the total separation time.
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Effects of Quenching Rate and viscosity on spinodal decomposition.
Physical review. E Statistical nonlinear and soft matter physics, 2006Co-Authors: Pietro Poesio, G. Cominardi, Adriano Maria Lezzi, R Mauri, Gian Paolo BerettaAbstract:Spinodal decomposition of deeply quenched mixtures is studied experimentally, with particular emphasis on the domain growth Rate during the late stage of coarsening. We provide some experimental evidence that at high Péclet number, the process is isotropic and the domain growth is linear in time, even at finite Quenching Rates. In fact, the Quenching Rate appears to influence the magnitude of the growth Rate, but not its scaling law. In the second part of the work we analyze the effect of viscosity on the growth Rate. As predicted by the diffuse interface model, we do not find any effect of viscosity on the growth Rate of the nucleating drops, although, as expected, the viscosity of the continuous phase does influence the settling speed and thus the total separation time.
Malcolm J Couper - One of the best experts on this subject based on the ideXlab platform.
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effect of Quenching Rate on strengthening behavior of an al zn mg cu alloy during natural ageing
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2020Co-Authors: Shengdan Liu, Menghan Zhang, Qianqian Zhu, Hui Song, Lingfei Cao, Malcolm J CouperAbstract:Abstract The effect of Quenching Rate on strengthening behavior of an Al-Zn-Mg-Cu alloy 7085 during natural ageing has been investigated by hardness, tensile testing, differential scanning calorimetry, transmission electron microscopy, high resolution transmission electron microscopy and three dimensional atom probe. Quench-induced Y phase forms in the air-cooled condition and contributes a remarkable 100 MPa to the as-quenched strength. The air-cooled condition continues to exhibit higher hardness and strength than for the rapid, water-cooled condition during natural ageing for up to about 30000 h. With the increase of natural ageing time, the hardness difference tends to decrease slowly within the first 0.5 h, then sharply until about 20 h, and finally approaches a constant, small difference. The reasons for this unusual quench sensitivity are discussed based on the different precipitation features arising during Quenching and natural ageing.
