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Creep Fracture Complexions
https://orcid.org/0000-0003-1822-0135
Fracture is generally the separation of an object into different pieces under the application of external stress. The fracture surface embosses the imprint of the complete deformation process subjected to a material. Hence, it is plausible to correlate fracture features and respective deformation history of a material. Two-dimensional ductile fracture complexions are quantitatively measured on the published creep-ruptured fractographs of a ferritic steel with different product dimensions at various stresses and temperatures. Intercept length measurements were performed to measure the dimple geometry on the published electron fractographs. Irrespective of test parameters and product dimensions, the fracture surface appearance persisted to be ductile transgranular in nature, which has been quantitatively analyzed by the statistical distribution of diverse-sized dimples on the fractographs. The distribution of dimple size quantified from the crept fractographs as a function of temperature and stress were monitored to estimate the nature of disparity in creep responses of the steel. It has been investigated that with the increase of the Larson-Miller parameter, the average dimple size increases as the corresponding applied stress decreases. Finally, this research brings to the fore that from the quantification of systematic crept fractographs, it is possible to reasonably deduce the creep properties/life of a ferritic steel, when the material microstructure is known.
Creep Fracture Complexions
https://orcid.org/0000-0003-1822-0135
Fracture is generally the separation of an object into different pieces under the application of external stress. The fracture surface embosses the imprint of the complete deformation process subjected to a material. Hence, it is plausible to correlate fracture features and respective deformation history of a material. Two-dimensional ductile fracture complexions are quantitatively measured on the published creep-ruptured fractographs of a ferritic steel with different product dimensions at various stresses and temperatures. Intercept length measurements were performed to measure the dimple geometry on the published electron fractographs. Irrespective of test parameters and product dimensions, the fracture surface appearance persisted to be ductile transgranular in nature, which has been quantitatively analyzed by the statistical distribution of diverse-sized dimples on the fractographs. The distribution of dimple size quantified from the crept fractographs as a function of temperature and stress were monitored to estimate the nature of disparity in creep responses of the steel. It has been investigated that with the increase of the Larson-Miller parameter, the average dimple size increases as the corresponding applied stress decreases. Finally, this research brings to the fore that from the quantification of systematic crept fractographs, it is possible to reasonably deduce the creep properties/life of a ferritic steel, when the material microstructure is known.
Creep Fracture Complexions
https://orcid.org/0000-0003-1822-0135
Fracture is generally the separation of an object into different pieces under the application of external stress. The fracture surface embosses the imprint of the complete deformation process subjected to a material. Hence, it is plausible to correlate fracture features and respective deformation history of a material. Two-dimensional ductile fracture complexions are quantitatively measured on the published creep-ruptured fractographs of a ferritic steel with different product dimensions at various stresses and temperatures. Intercept length measurements were performed to measure the dimple geometry on the published electron fractographs. Irrespective of test parameters and product dimensions, the fracture surface appearance persisted to be ductile transgranular in nature, which has been quantitatively analyzed by the statistical distribution of diverse-sized dimples on the fractographs. The distribution of dimple size quantified from the crept fractographs as a function of temperature and stress were monitored to estimate the nature of disparity in creep responses of the steel. It has been investigated that with the increase of the Larson-Miller parameter, the average dimple size increases as the corresponding applied stress decreases. Finally, this research brings to the fore that from the quantification of systematic crept fractographs, it is possible to reasonably deduce the creep properties/life of a ferritic steel, when the material microstructure is known.
Creep Fracture Complexions
J. Mater. Civ. Eng.
Das, Arpan (author)
2023-05-01
Article (Journal)
Electronic Resource
English
Creep , Dimple , Fractographs , Cr-Mo steels , Fracture
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