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Krzysztof Wierzbanowski - One of the best experts on this subject based on the ideXlab platform.
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Incompatibility Stresses and Elastic Energy Stored in Polycrystalline Materials
Materials Science Forum, 2020Co-Authors: Andrzej Baczmanski, Roman Wawszczak, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Sebastian Wroński, Krzysztof WierzbanowskiAbstract:ray diffraction method is used to determine the stress field in polycrystalline materials. The measurement of peak shifts enables the determination of the macrostresses and the plastic incompatibility stresses (intergranular stresses). In the interpretation of the experimental results self-consistent model of elatoplastic deformation is used. In the present work, the plastic incompatibility stresses and the elastic energy stored in cold rolled brass and ferritic steel were determinate. The results are discussed and presented in Euler Space.
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Residual stress field in steel samples during plastic deformation and recovery processes
Philosophical Magazine, 2011Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Krzysztof Wierzbanowski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Alain LodiniAbstract:An X-ray diffraction method was applied to measure residual stresses and stored elastic energy in deformed and annealed polycrystalline ferritic and austenitic steel samples. The orientation distribution of plastic incompatibility second-order stresses created during elastoplastic deformation was determined and presented in Euler Space. Using deformation models, these stresses were correlated with different types of intergranular interactions occurring in the studied materials. An important decrease of the first- and the second-order residual stresses was observed during recovery and recrystallisation processes. Diffraction peak widths, related to dislocation density, were studied and correlated with stress variation during annealing process. Differences in stress relaxation between ferritic and austenitic samples were explained by different values of the stacking fault energy, which influences dislocation climb and cross-slip.
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Residual Stresses in Austenitic Steel during Plastic Deformation and Recovery Processes
Materials Science Forum, 2011Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Krzysztof WierzbanowskiAbstract:X-ray diffraction method was applied to measure residual stresses in deformed and annealed polycrystalline austenitic steel. An elastoplastic deformation model was used in analysis of experimental data. As the result, the orientation distribution function of grain stresses, created during elastoplastic deformation was determined and presented in the Euler Space. An important decrease of the first and the second order residual stresses was observed during recovery process. It was found that the magnitude of the stresses decreases, while their distribution between different grain orientations remains almost unchanged.
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Evolution of Residual Stresses and Stored Elastic Energy in Ferritic Steel during Recovery Process
Materials Science Forum, 2010Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Krzysztof WierzbanowskiAbstract:Diffraction method was applied to determine the residual stresses in deformed and annealed polycrystalline samples of ferritic steel. The specific stored elastic energy corresponding to the grain stresses was calculated and presented in Euler Space. An important decrease of the first and second order residual stresses and consequently stored elastic energy was observed during recovery and recrystallization. The evolution of stresses was correlated with the variation of diffraction peak width (related to dislocations density) and crystallographical texture.
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Plastic incompatibility stresses and stored elastic energy in plastically deformed copper
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2009Co-Authors: Andrzej Baczmanski, Neila Hfaiedh, Manuel François, Krzysztof WierzbanowskiAbstract:Abstract The X-ray diffraction method and theoretical model of elastoplastic deformation were used to examine the residual stresses in polycrystalline copper. To this end, the {2 2 0} strain pole figures were determined for samples subjected to different magnitudes of tensile deformation. Using diffraction data and the self-consistent model, the tensor of plastic incompatibility stress was found for each orientation of a polycrystalline grain. Crystallographic textures, macroscopic and second-order residual stresses were considered in the analysis. As a result, the distributions of elastic stored energy and von Mises equivalent stress were presented in Euler Space and correlated with the preferred orientations of grains. Moreover, using the model prediction, the variation of the critical resolved shear stress with grain orientation was determined.
Andrzej Baczmanski - One of the best experts on this subject based on the ideXlab platform.
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Incompatibility Stresses and Elastic Energy Stored in Polycrystalline Materials
Materials Science Forum, 2020Co-Authors: Andrzej Baczmanski, Roman Wawszczak, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Sebastian Wroński, Krzysztof WierzbanowskiAbstract:ray diffraction method is used to determine the stress field in polycrystalline materials. The measurement of peak shifts enables the determination of the macrostresses and the plastic incompatibility stresses (intergranular stresses). In the interpretation of the experimental results self-consistent model of elatoplastic deformation is used. In the present work, the plastic incompatibility stresses and the elastic energy stored in cold rolled brass and ferritic steel were determinate. The results are discussed and presented in Euler Space.
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Residual stress field in steel samples during plastic deformation and recovery processes
Philosophical Magazine, 2011Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Krzysztof Wierzbanowski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Alain LodiniAbstract:An X-ray diffraction method was applied to measure residual stresses and stored elastic energy in deformed and annealed polycrystalline ferritic and austenitic steel samples. The orientation distribution of plastic incompatibility second-order stresses created during elastoplastic deformation was determined and presented in Euler Space. Using deformation models, these stresses were correlated with different types of intergranular interactions occurring in the studied materials. An important decrease of the first- and the second-order residual stresses was observed during recovery and recrystallisation processes. Diffraction peak widths, related to dislocation density, were studied and correlated with stress variation during annealing process. Differences in stress relaxation between ferritic and austenitic samples were explained by different values of the stacking fault energy, which influences dislocation climb and cross-slip.
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Residual Stresses in Austenitic Steel during Plastic Deformation and Recovery Processes
Materials Science Forum, 2011Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Krzysztof WierzbanowskiAbstract:X-ray diffraction method was applied to measure residual stresses in deformed and annealed polycrystalline austenitic steel. An elastoplastic deformation model was used in analysis of experimental data. As the result, the orientation distribution function of grain stresses, created during elastoplastic deformation was determined and presented in the Euler Space. An important decrease of the first and the second order residual stresses was observed during recovery process. It was found that the magnitude of the stresses decreases, while their distribution between different grain orientations remains almost unchanged.
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Evolution of Residual Stresses and Stored Elastic Energy in Ferritic Steel during Recovery Process
Materials Science Forum, 2010Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Krzysztof WierzbanowskiAbstract:Diffraction method was applied to determine the residual stresses in deformed and annealed polycrystalline samples of ferritic steel. The specific stored elastic energy corresponding to the grain stresses was calculated and presented in Euler Space. An important decrease of the first and second order residual stresses and consequently stored elastic energy was observed during recovery and recrystallization. The evolution of stresses was correlated with the variation of diffraction peak width (related to dislocations density) and crystallographical texture.
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Plastic incompatibility stresses and stored elastic energy in plastically deformed copper
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2009Co-Authors: Andrzej Baczmanski, Neila Hfaiedh, Manuel François, Krzysztof WierzbanowskiAbstract:Abstract The X-ray diffraction method and theoretical model of elastoplastic deformation were used to examine the residual stresses in polycrystalline copper. To this end, the {2 2 0} strain pole figures were determined for samples subjected to different magnitudes of tensile deformation. Using diffraction data and the self-consistent model, the tensor of plastic incompatibility stress was found for each orientation of a polycrystalline grain. Crystallographic textures, macroscopic and second-order residual stresses were considered in the analysis. As a result, the distributions of elastic stored energy and von Mises equivalent stress were presented in Euler Space and correlated with the preferred orientations of grains. Moreover, using the model prediction, the variation of the critical resolved shear stress with grain orientation was determined.
B Pathiraj - One of the best experts on this subject based on the ideXlab platform.
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quantitative estimation of incompatibility stresses and elastic energy stored in ferritic steel
Journal of Applied Crystallography, 2008Co-Authors: Andrzej Baczmanski, Albert Tidu, Paul Lipinski, Krzysztof Wierzbanowski, B PathirajAbstract:Plastic incompatibility second-order stresses were determined for different orientations of a polycrystalline grain, using X-ray diffraction data and results of the self-consistent elasto-plastic model. The stresses in cold rolled ferritic steel were determined both in as-received and under tensile loaded conditions. It has been shown that the Reuss model and the self-consistent model applied to near surface volume provide the best approaches to determine diffraction elastic constants. For the first time, the elastic energy in an anisotropic material (arising from plastic incompatibilities between grains having various lattice orientations) has been determined. The second-order incompatibility stresses and stored elastic energy are presented in Euler Space.
K. Anuradha - One of the best experts on this subject based on the ideXlab platform.
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Effect of Chemical Composition on Texture Using Response Surface Methodology
Journal of Materials Engineering and Performance, 2013Co-Authors: K. Velmanirajan, R. Narayanasamy, K. AnuradhaAbstract:This study explores the effect of annealing temperature and chemical composition on crystallographic texture evolution of commercially pure aluminium alloy sheets using response surface methodology (RSM). The orientation of the crystal structure in Euler Space using Bunge notation has been studied to know the behavior of the metal and estimate its volume fraction. The experimental procedure involves texture analysis with respect to annealing temperature and chemical composition in correlation with the results of formability and use of RSM. The effect of important input parameters, namely, annealing temperature and chemical composition (impurities) was used for predicting the numerical models using the volume fraction of texture output from the crystallographic study using Design Expert 8.0.7.1, trial software. Also this study explains the effect of individual chemical components, namely, iron, silicon, and copper in evolution of texture components. The volume fraction of Cube {1 0 0} 〈0 0 1〉, Bs {1 1 0} 〈1 1 2〉, and S {1 2 3} 〈6 3 4〉 components increase, whenever iron and copper content increase and silicon component decreases.
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Effect of Chemical Composition on Texture Using Response Surface Methodology
Journal of Materials Engineering and Performance, 2013Co-Authors: K. Velmanirajan, R. Narayanasamy, K. AnuradhaAbstract:This study explores the effect of annealing temperature and chemical composition on crystallographic texture evolution of commercially pure aluminium alloy sheets using response surface methodology (RSM). The orientation of the crystal structure in Euler Space using Bunge notation has been studied to know the behavior of the metal and estimate its volume fraction. The experimental procedure involves texture analysis with respect to annealing temperature and chemical composition in correlation with the results of formability and use of RSM. The effect of important input parameters, namely, annealing temperature and chemical composition (impurities) was used for predicting the numerical models using the volume fraction of texture output from the crystallographic study using Design Expert 8.0.7.1, trial software. Also this study explains the effect of individual chemical components, namely, iron, silicon, and copper in evolution of texture components. The volume fraction of Cube {1 0 0} AE 001 ae ,B s {1 1 0}AE 11 2ae, and S {1 2 3} AE 634 ae components increase, whenever iron and copper content increase and silicon component decreases.
Roman Wawszczak - One of the best experts on this subject based on the ideXlab platform.
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Incompatibility Stresses and Elastic Energy Stored in Polycrystalline Materials
Materials Science Forum, 2020Co-Authors: Andrzej Baczmanski, Roman Wawszczak, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Sebastian Wroński, Krzysztof WierzbanowskiAbstract:ray diffraction method is used to determine the stress field in polycrystalline materials. The measurement of peak shifts enables the determination of the macrostresses and the plastic incompatibility stresses (intergranular stresses). In the interpretation of the experimental results self-consistent model of elatoplastic deformation is used. In the present work, the plastic incompatibility stresses and the elastic energy stored in cold rolled brass and ferritic steel were determinate. The results are discussed and presented in Euler Space.
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Residual stress field in steel samples during plastic deformation and recovery processes
Philosophical Magazine, 2011Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Krzysztof Wierzbanowski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Alain LodiniAbstract:An X-ray diffraction method was applied to measure residual stresses and stored elastic energy in deformed and annealed polycrystalline ferritic and austenitic steel samples. The orientation distribution of plastic incompatibility second-order stresses created during elastoplastic deformation was determined and presented in Euler Space. Using deformation models, these stresses were correlated with different types of intergranular interactions occurring in the studied materials. An important decrease of the first- and the second-order residual stresses was observed during recovery and recrystallisation processes. Diffraction peak widths, related to dislocation density, were studied and correlated with stress variation during annealing process. Differences in stress relaxation between ferritic and austenitic samples were explained by different values of the stacking fault energy, which influences dislocation climb and cross-slip.
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Residual Stresses in Austenitic Steel during Plastic Deformation and Recovery Processes
Materials Science Forum, 2011Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Krzysztof WierzbanowskiAbstract:X-ray diffraction method was applied to measure residual stresses in deformed and annealed polycrystalline austenitic steel. An elastoplastic deformation model was used in analysis of experimental data. As the result, the orientation distribution function of grain stresses, created during elastoplastic deformation was determined and presented in the Euler Space. An important decrease of the first and the second order residual stresses was observed during recovery process. It was found that the magnitude of the stresses decreases, while their distribution between different grain orientations remains almost unchanged.
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Evolution of Residual Stresses and Stored Elastic Energy in Ferritic Steel during Recovery Process
Materials Science Forum, 2010Co-Authors: Roman Wawszczak, Andrzej Baczmanski, Chedly Braham, Wilfrid Seiler, Mirosław Wróbel, Krzysztof WierzbanowskiAbstract:Diffraction method was applied to determine the residual stresses in deformed and annealed polycrystalline samples of ferritic steel. The specific stored elastic energy corresponding to the grain stresses was calculated and presented in Euler Space. An important decrease of the first and second order residual stresses and consequently stored elastic energy was observed during recovery and recrystallization. The evolution of stresses was correlated with the variation of diffraction peak width (related to dislocations density) and crystallographical texture.