The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform
B C De Cooman - One of the best experts on this subject based on the ideXlab platform.
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effect of dislocation density on the low temperature aging behavior of an ultra low carbon bake Hardening Steel
Journal of Alloys and Compounds, 2000Co-Authors: K De Blauwe, S Vandeputte, B C De CoomanAbstract:Abstract Strain aging was studied in an ultra low carbon (ULC) Steel with a total carbon content of 20 ppm (wt.%) in order to identify the process stages and mechanism of bake Hardening in this type of Steel. The effects of dislocation density, varied by means of uniaxial tensile prestraining (1–10%) on the aging kinetics were investigated within an aging temperature range of 50–170°C. The aging was evaluated by means of strength measurements and the determination of interstitial carbon content after aging using a piezoelectric composite oscillator operating at 40 kHz. The interaction between interstitial carbon and dislocations was examined through amplitude dependent internal friction measurements. The influence of dislocation density on the aging behavior have been discussed with reference to the kinetics and mechanism of the aging process.
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static strain aging behavior of ultra low carbon bake Hardening Steel
Scripta Materialia, 1999Co-Authors: S Vandeputte, B C De CoomanAbstract:A detailed study of static strain aging in ultra low carbon (ULC) Steel has not yet been reported. Therefore, the present study was carried out to gain an understanding of the aging kinetics in a ULC Steel with a total carbon content of 20 ppm. The influence of dislocation density on the aging process was also taken into account. The kinetics of the aging were determined by means of the measurement of strength properties rather than solute concentration as it was experienced that quantitative estimation of such low amount of carbon during aging course would be too difficult with the existing diagnostic tools.
S Vandeputte - One of the best experts on this subject based on the ideXlab platform.
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effect of dislocation density on the low temperature aging behavior of an ultra low carbon bake Hardening Steel
Journal of Alloys and Compounds, 2000Co-Authors: K De Blauwe, S Vandeputte, B C De CoomanAbstract:Abstract Strain aging was studied in an ultra low carbon (ULC) Steel with a total carbon content of 20 ppm (wt.%) in order to identify the process stages and mechanism of bake Hardening in this type of Steel. The effects of dislocation density, varied by means of uniaxial tensile prestraining (1–10%) on the aging kinetics were investigated within an aging temperature range of 50–170°C. The aging was evaluated by means of strength measurements and the determination of interstitial carbon content after aging using a piezoelectric composite oscillator operating at 40 kHz. The interaction between interstitial carbon and dislocations was examined through amplitude dependent internal friction measurements. The influence of dislocation density on the aging behavior have been discussed with reference to the kinetics and mechanism of the aging process.
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static strain aging behavior of ultra low carbon bake Hardening Steel
Scripta Materialia, 1999Co-Authors: S Vandeputte, B C De CoomanAbstract:A detailed study of static strain aging in ultra low carbon (ULC) Steel has not yet been reported. Therefore, the present study was carried out to gain an understanding of the aging kinetics in a ULC Steel with a total carbon content of 20 ppm. The influence of dislocation density on the aging process was also taken into account. The kinetics of the aging were determined by means of the measurement of strength properties rather than solute concentration as it was experienced that quantitative estimation of such low amount of carbon during aging course would be too difficult with the existing diagnostic tools.
Gustavo Sanchez Sarmiento - One of the best experts on this subject based on the ideXlab platform.
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epoxidized soybean oil evaluation of oxidative stabilization and metal quenching heat transfer performance
Journal of Materials Engineering and Performance, 2013Co-Authors: Rosa Lucia Simencio Otero, George E. Totten, Gustavo Sanchez Sarmiento, Lauralice De Campos Franceschini Canale, Diego Said Schicchi, Eliana AgaliotisAbstract:Vegetable and animal oils as a class of fluids have been used for hundreds of years, if not longer, as quenchants for Hardening Steel. However, when petroleum oils became available in the late 1800s and early 1900s, the use of these fluids as quenchants, in addition to their use in other industrial oil applications, quickly diminished. This was primarily, but not exclusively, due to their generally very poor thermal-oxidative instability and the difficulty for formulating fluid analogs with varying viscosity properties. Interest in the use of renewable fluids, such as vegetable oils, has increased dramatically in recent years as alternatives to the use of relatively non-biodegradable and toxic petroleum oils. However, the relatively poor thermal-oxidative stability has continued to be a significant reason for their general non-acceptance in the marketplace. Soybean oil (SO) is one of the most highly produced vegetable oils in Brazil. Currently, there are commercially produced epoxidized versions of SO which are available. The objective of this paper is to discuss the potential use of epoxidized SO and its heat transfer properties as a viable alternative to petroleum oils for Hardening Steel.
Chatchai Manathamsombat - One of the best experts on this subject based on the ideXlab platform.
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effect of fiber volume content on electromechanical behavior of strain Hardening Steel fiber reinforced cementitious composites
Journal of Composite Materials, 2015Co-Authors: Jiandong Song, Duyliem Nguyen, Chatchai ManathamsombatAbstract:This research investigated the effect of fiber volume content on the electromechanical behavior of strain-Hardening Steel-fiber-reinforced cementitious composites under direct tension. There is strong correlation between the change of electrical resistivity and the tensile response of strain-Hardening Steel-fiber-reinforced cementitious composites: the electrical resistivity of strain-Hardening Steel-fiber-reinforced cementitious composites clearly decreased during strain Hardening as the tensile strain of them increased. The electrical conductivity, tensile resistance, and damage-sensing capacity of strain-Hardening Steel-fiber-reinforced cementitious composites were generally increased as the volume content of twisted Steel fibers added in a mortar matrix increased from 0.0 to 2.0%. The strain-Hardening Steel-fiber-reinforced cementitious composites with fiber content more than 1% by volume produced high damage-sensing capacity with high nominal gauge factor: absolute value over 150. Besides, the additi...
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effect of fiber volume content on electromechanical behavior of strain Hardening Steel fiber reinforced cementitious composites
Journal of Composite Materials, 2015Co-Authors: Jiandong Song, Duyliem Nguyen, Chatchai Manathamsombat, Dongjoo KimAbstract:This research investigated the effect of fiber volume content on the electromechanical behavior of strain-Hardening Steel-fiber-reinforced cementitious composites under direct tension. There is str...
K De Blauwe - One of the best experts on this subject based on the ideXlab platform.
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effect of dislocation density on the low temperature aging behavior of an ultra low carbon bake Hardening Steel
Journal of Alloys and Compounds, 2000Co-Authors: K De Blauwe, S Vandeputte, B C De CoomanAbstract:Abstract Strain aging was studied in an ultra low carbon (ULC) Steel with a total carbon content of 20 ppm (wt.%) in order to identify the process stages and mechanism of bake Hardening in this type of Steel. The effects of dislocation density, varied by means of uniaxial tensile prestraining (1–10%) on the aging kinetics were investigated within an aging temperature range of 50–170°C. The aging was evaluated by means of strength measurements and the determination of interstitial carbon content after aging using a piezoelectric composite oscillator operating at 40 kHz. The interaction between interstitial carbon and dislocations was examined through amplitude dependent internal friction measurements. The influence of dislocation density on the aging behavior have been discussed with reference to the kinetics and mechanism of the aging process.
