The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Sanboh Lee - One of the best experts on this subject based on the ideXlab platform.
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Investigation of ultra low indentation loading at elevated temperatures based on the Hydrostatic Stress-induced mass flow model
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2000Co-Authors: J.-l Chu, H.y Lin, Sanboh LeeAbstract:A mechanism of Hydrostatic Stress-induced mass flow is proposed to describe a medium under an action of ultra low load indentation at elevated temperatures. Two types of indenters of conical and spherical shapes and two loading conditions of constant indentation speed and constant load were used in the investigation. For both shapes of indenters, the maximum Hydrostatic Stress is located in the vicinity of the indentation tip. The maximum Hydrostatic Stress is proportional to the indentation speed and applied load, but inversely proportional to the atomic mobility. Comparing the loading conditions, the maximum Hydrostatic Stress is linearly proportional to the indentation area at constant indentation speed, but inversely proportional to the indentation area at constant applied load.
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Investigation of ultra low indentation loading at elevated temperatures based on the Hydrostatic Stress-induced mass flow model
Materials Science and Engineering: A, 2000Co-Authors: J.-l Chu, H.y Lin, Sanboh LeeAbstract:[[abstract]]A mechanism of Hydrostatic Stress-induced mass flow is proposed to describe a medium under an action of ultra low load indentation at elevated temperatures. Two types of indenters of conical and spherical shapes and two loading conditions of constant indentation speed and constant load were used in the investigation. For both shapes of indenters, the maximum Hydrostatic Stress is located in the vicinity of the indentation tip. The maximum Hydrostatic Stress is proportional to the indentation speed and applied load, but inversely proportional to the atomic mobility. Comparing the loading conditions, the maximum Hydrostatic Stress is linearly proportional to the indentation area at constant indentation speed, but inversely proportional to the indentation area at constant applied load.[[fileno]]2020330010105[[department]]材料科學工程學
John W. Cahn - One of the best experts on this subject based on the ideXlab platform.
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solid liquid equilibrium for non Hydrostatic Stress
Acta Materialia, 2004Co-Authors: Robert F. Sekerka, John W. CahnAbstract:Abstract We examine Gibbs’ conditions for equilibrium of a non-Hydrostatically Stressed single component solid in equilibrium across one of its faces with a pure liquid at pressure p F . We show that the equilibrium melting temperature T N for the non-Hydrostatically Stressed solid in contact with a melt at pressure p F is below the equilibrium melting temperature T H of the Hydrostatically Stressed solid at p F . Furthermore, for small strain and linear isotropic elasticity, the deviation, T H − T N , is shown to be quadratic in the differences between the principal values of the Stress tensor and − p F . The result depends on both the bulk modulus and the shear modulus of the solid. Even for Stresses as large as a typical yield Stress, T H − T N is equal to 1 K or less. Nevertheless, the liquid in equilibrium with this non-Hydrostatically Stressed solid is always unstable with respect to the formation of Hydrostatic solid.
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Solid–liquid equilibrium for non-Hydrostatic Stress
Acta Materialia, 2004Co-Authors: Robert F. Sekerka, John W. CahnAbstract:Abstract We examine Gibbs’ conditions for equilibrium of a non-Hydrostatically Stressed single component solid in equilibrium across one of its faces with a pure liquid at pressure p F . We show that the equilibrium melting temperature T N for the non-Hydrostatically Stressed solid in contact with a melt at pressure p F is below the equilibrium melting temperature T H of the Hydrostatically Stressed solid at p F . Furthermore, for small strain and linear isotropic elasticity, the deviation, T H − T N , is shown to be quadratic in the differences between the principal values of the Stress tensor and − p F . The result depends on both the bulk modulus and the shear modulus of the solid. Even for Stresses as large as a typical yield Stress, T H − T N is equal to 1 K or less. Nevertheless, the liquid in equilibrium with this non-Hydrostatically Stressed solid is always unstable with respect to the formation of Hydrostatic solid.
J.-l Chu - One of the best experts on this subject based on the ideXlab platform.
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Investigation of ultra low indentation loading at elevated temperatures based on the Hydrostatic Stress-induced mass flow model
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2000Co-Authors: J.-l Chu, H.y Lin, Sanboh LeeAbstract:A mechanism of Hydrostatic Stress-induced mass flow is proposed to describe a medium under an action of ultra low load indentation at elevated temperatures. Two types of indenters of conical and spherical shapes and two loading conditions of constant indentation speed and constant load were used in the investigation. For both shapes of indenters, the maximum Hydrostatic Stress is located in the vicinity of the indentation tip. The maximum Hydrostatic Stress is proportional to the indentation speed and applied load, but inversely proportional to the atomic mobility. Comparing the loading conditions, the maximum Hydrostatic Stress is linearly proportional to the indentation area at constant indentation speed, but inversely proportional to the indentation area at constant applied load.
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Investigation of ultra low indentation loading at elevated temperatures based on the Hydrostatic Stress-induced mass flow model
Materials Science and Engineering: A, 2000Co-Authors: J.-l Chu, H.y Lin, Sanboh LeeAbstract:[[abstract]]A mechanism of Hydrostatic Stress-induced mass flow is proposed to describe a medium under an action of ultra low load indentation at elevated temperatures. Two types of indenters of conical and spherical shapes and two loading conditions of constant indentation speed and constant load were used in the investigation. For both shapes of indenters, the maximum Hydrostatic Stress is located in the vicinity of the indentation tip. The maximum Hydrostatic Stress is proportional to the indentation speed and applied load, but inversely proportional to the atomic mobility. Comparing the loading conditions, the maximum Hydrostatic Stress is linearly proportional to the indentation area at constant indentation speed, but inversely proportional to the indentation area at constant applied load.[[fileno]]2020330010105[[department]]材料科學工程學
Robert F. Sekerka - One of the best experts on this subject based on the ideXlab platform.
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solid liquid equilibrium for non Hydrostatic Stress
Acta Materialia, 2004Co-Authors: Robert F. Sekerka, John W. CahnAbstract:Abstract We examine Gibbs’ conditions for equilibrium of a non-Hydrostatically Stressed single component solid in equilibrium across one of its faces with a pure liquid at pressure p F . We show that the equilibrium melting temperature T N for the non-Hydrostatically Stressed solid in contact with a melt at pressure p F is below the equilibrium melting temperature T H of the Hydrostatically Stressed solid at p F . Furthermore, for small strain and linear isotropic elasticity, the deviation, T H − T N , is shown to be quadratic in the differences between the principal values of the Stress tensor and − p F . The result depends on both the bulk modulus and the shear modulus of the solid. Even for Stresses as large as a typical yield Stress, T H − T N is equal to 1 K or less. Nevertheless, the liquid in equilibrium with this non-Hydrostatically Stressed solid is always unstable with respect to the formation of Hydrostatic solid.
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Solid–liquid equilibrium for non-Hydrostatic Stress
Acta Materialia, 2004Co-Authors: Robert F. Sekerka, John W. CahnAbstract:Abstract We examine Gibbs’ conditions for equilibrium of a non-Hydrostatically Stressed single component solid in equilibrium across one of its faces with a pure liquid at pressure p F . We show that the equilibrium melting temperature T N for the non-Hydrostatically Stressed solid in contact with a melt at pressure p F is below the equilibrium melting temperature T H of the Hydrostatically Stressed solid at p F . Furthermore, for small strain and linear isotropic elasticity, the deviation, T H − T N , is shown to be quadratic in the differences between the principal values of the Stress tensor and − p F . The result depends on both the bulk modulus and the shear modulus of the solid. Even for Stresses as large as a typical yield Stress, T H − T N is equal to 1 K or less. Nevertheless, the liquid in equilibrium with this non-Hydrostatically Stressed solid is always unstable with respect to the formation of Hydrostatic solid.
H.y Lin - One of the best experts on this subject based on the ideXlab platform.
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Investigation of ultra low indentation loading at elevated temperatures based on the Hydrostatic Stress-induced mass flow model
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2000Co-Authors: J.-l Chu, H.y Lin, Sanboh LeeAbstract:A mechanism of Hydrostatic Stress-induced mass flow is proposed to describe a medium under an action of ultra low load indentation at elevated temperatures. Two types of indenters of conical and spherical shapes and two loading conditions of constant indentation speed and constant load were used in the investigation. For both shapes of indenters, the maximum Hydrostatic Stress is located in the vicinity of the indentation tip. The maximum Hydrostatic Stress is proportional to the indentation speed and applied load, but inversely proportional to the atomic mobility. Comparing the loading conditions, the maximum Hydrostatic Stress is linearly proportional to the indentation area at constant indentation speed, but inversely proportional to the indentation area at constant applied load.
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Investigation of ultra low indentation loading at elevated temperatures based on the Hydrostatic Stress-induced mass flow model
Materials Science and Engineering: A, 2000Co-Authors: J.-l Chu, H.y Lin, Sanboh LeeAbstract:[[abstract]]A mechanism of Hydrostatic Stress-induced mass flow is proposed to describe a medium under an action of ultra low load indentation at elevated temperatures. Two types of indenters of conical and spherical shapes and two loading conditions of constant indentation speed and constant load were used in the investigation. For both shapes of indenters, the maximum Hydrostatic Stress is located in the vicinity of the indentation tip. The maximum Hydrostatic Stress is proportional to the indentation speed and applied load, but inversely proportional to the atomic mobility. Comparing the loading conditions, the maximum Hydrostatic Stress is linearly proportional to the indentation area at constant indentation speed, but inversely proportional to the indentation area at constant applied load.[[fileno]]2020330010105[[department]]材料科學工程學
