The Experts below are selected from a list of 1032 Experts worldwide ranked by ideXlab platform
J. Oudin - One of the best experts on this subject based on the ideXlab platform.
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Hardening behaviour law versus rigid perfectly plastic law: application to a cold forging tool steel
International Journal of Plasticity, 2002Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract A hardening stress strain law is determined for the AISI M2 cold forging tool steel. The experimental part is based on the Brinell indentation Test. The numerical part consists in the simulation of the Brinell indentation Test under increasing load cases. For each load case, parameters of the behaviour law are adjusted in order to make the numerical diameter of the Brinell Test converging towards the experimental one. Results are compared with a rigid perfectly plastic behaviour law usually used for this kind of steel. Then, a deformable sphere is used and the results are compared with a rigid one. It is shown that a hardening behaviour law is more accurate than a rigid perfectly plastic one for the study of wear and tools damage since it is more representative of the reality.
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Determination of a hardening behaviour law for a cold forging TiN-coated tool steel
Surface and Coatings Technology, 2000Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract Damage occurrence has been industrially observed in cold forging tooling even though stresses remain lower than the yield point derived from a conventional rigid perfectly plastic law. A hardening stress–strain law has therefore been determined for the TiN-coated AISI M2 tool steel to improve the knowledge of the tool behaviour. The methodology used to establish the hardening law is based on the Brinell indentation Test, which is simulated under increasing load. For each increment of the load, the parameters of the behaviour law are adjusted in order to make the numerical diameter and the experimental results of the Brinell Test converge. In parallel, scanning electron microscope observations on the Brinell indentations show the presence of cracks at high loads, justifying the slight decay of the behaviour law towards the non-coated specimen behaviour one. Finally, this behaviour law is applied to an industrial process showing plastic deformation on the surface of the tool.
A. Verleene - One of the best experts on this subject based on the ideXlab platform.
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Hardening behaviour law versus rigid perfectly plastic law: application to a cold forging tool steel
International Journal of Plasticity, 2002Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract A hardening stress strain law is determined for the AISI M2 cold forging tool steel. The experimental part is based on the Brinell indentation Test. The numerical part consists in the simulation of the Brinell indentation Test under increasing load cases. For each load case, parameters of the behaviour law are adjusted in order to make the numerical diameter of the Brinell Test converging towards the experimental one. Results are compared with a rigid perfectly plastic behaviour law usually used for this kind of steel. Then, a deformable sphere is used and the results are compared with a rigid one. It is shown that a hardening behaviour law is more accurate than a rigid perfectly plastic one for the study of wear and tools damage since it is more representative of the reality.
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Determination of a hardening behaviour law for a cold forging TiN-coated tool steel
Surface and Coatings Technology, 2000Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract Damage occurrence has been industrially observed in cold forging tooling even though stresses remain lower than the yield point derived from a conventional rigid perfectly plastic law. A hardening stress–strain law has therefore been determined for the TiN-coated AISI M2 tool steel to improve the knowledge of the tool behaviour. The methodology used to establish the hardening law is based on the Brinell indentation Test, which is simulated under increasing load. For each increment of the load, the parameters of the behaviour law are adjusted in order to make the numerical diameter and the experimental results of the Brinell Test converge. In parallel, scanning electron microscope observations on the Brinell indentations show the presence of cracks at high loads, justifying the slight decay of the behaviour law towards the non-coated specimen behaviour one. Finally, this behaviour law is applied to an industrial process showing plastic deformation on the surface of the tool.
Carlos Capdevila - One of the best experts on this subject based on the ideXlab platform.
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Effect of residual stress on recrystallization behavior of mechanically alloyed steels
Scripta Materialia, 2010Co-Authors: I. Toda-caraballo, Jesús Chao, Lars-erik Lindgren, Carlos CapdevilaAbstract:This paper presents a finite element modeling analysis of deformation on iron-base mechanically alloyed oxide dispersion strengthened alloy by spherical indentations (Brinell Test). Results of the model are used to interpret the role of residual shear stresses on the development of recrystallized grain structure and the temperature at which recrystallization occurs.
Mirentxu Dubar - One of the best experts on this subject based on the ideXlab platform.
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Hardening behaviour law versus rigid perfectly plastic law: application to a cold forging tool steel
International Journal of Plasticity, 2002Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract A hardening stress strain law is determined for the AISI M2 cold forging tool steel. The experimental part is based on the Brinell indentation Test. The numerical part consists in the simulation of the Brinell indentation Test under increasing load cases. For each load case, parameters of the behaviour law are adjusted in order to make the numerical diameter of the Brinell Test converging towards the experimental one. Results are compared with a rigid perfectly plastic behaviour law usually used for this kind of steel. Then, a deformable sphere is used and the results are compared with a rigid one. It is shown that a hardening behaviour law is more accurate than a rigid perfectly plastic one for the study of wear and tools damage since it is more representative of the reality.
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Determination of a hardening behaviour law for a cold forging TiN-coated tool steel
Surface and Coatings Technology, 2000Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract Damage occurrence has been industrially observed in cold forging tooling even though stresses remain lower than the yield point derived from a conventional rigid perfectly plastic law. A hardening stress–strain law has therefore been determined for the TiN-coated AISI M2 tool steel to improve the knowledge of the tool behaviour. The methodology used to establish the hardening law is based on the Brinell indentation Test, which is simulated under increasing load. For each increment of the load, the parameters of the behaviour law are adjusted in order to make the numerical diameter and the experimental results of the Brinell Test converge. In parallel, scanning electron microscope observations on the Brinell indentations show the presence of cracks at high loads, justifying the slight decay of the behaviour law towards the non-coated specimen behaviour one. Finally, this behaviour law is applied to an industrial process showing plastic deformation on the surface of the tool.
André Dubois - One of the best experts on this subject based on the ideXlab platform.
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Hardening behaviour law versus rigid perfectly plastic law: application to a cold forging tool steel
International Journal of Plasticity, 2002Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract A hardening stress strain law is determined for the AISI M2 cold forging tool steel. The experimental part is based on the Brinell indentation Test. The numerical part consists in the simulation of the Brinell indentation Test under increasing load cases. For each load case, parameters of the behaviour law are adjusted in order to make the numerical diameter of the Brinell Test converging towards the experimental one. Results are compared with a rigid perfectly plastic behaviour law usually used for this kind of steel. Then, a deformable sphere is used and the results are compared with a rigid one. It is shown that a hardening behaviour law is more accurate than a rigid perfectly plastic one for the study of wear and tools damage since it is more representative of the reality.
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Determination of a hardening behaviour law for a cold forging TiN-coated tool steel
Surface and Coatings Technology, 2000Co-Authors: A. Verleene, Laurent Dubar, André Dubois, Mirentxu Dubar, J. OudinAbstract:Abstract Damage occurrence has been industrially observed in cold forging tooling even though stresses remain lower than the yield point derived from a conventional rigid perfectly plastic law. A hardening stress–strain law has therefore been determined for the TiN-coated AISI M2 tool steel to improve the knowledge of the tool behaviour. The methodology used to establish the hardening law is based on the Brinell indentation Test, which is simulated under increasing load. For each increment of the load, the parameters of the behaviour law are adjusted in order to make the numerical diameter and the experimental results of the Brinell Test converge. In parallel, scanning electron microscope observations on the Brinell indentations show the presence of cracks at high loads, justifying the slight decay of the behaviour law towards the non-coated specimen behaviour one. Finally, this behaviour law is applied to an industrial process showing plastic deformation on the surface of the tool.