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Título del libro: Ms And T 2019 - Materials Science And Technology 2019
Título del capítulo: Analysis of hardening mechanisms in a low-carbon steel by microscopy-spectroscopy and nanoindentation techniques

Autores UNAM:
BERNARDO FABIAN CAMPILLO ILLANES; EDGAR LOPEZ MARTINEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2019
Palabras clave:

Alloy steel; Crystallography; Ferrite; Hardening; Nanohardness; Nanoindentation; Scanning electron microscopy; Scanning probe microscopy; Silica; Solid solutions; Sols; Spectroscopy; Suspensions (fluids); Colloidal silica; Elemental distribution; Hardening mechanism; Load-displacement curve; Nanoindentation techniques; Residual strains; Solid solution hardening; Stress-free surfaces; Low carbon steel


Resumen:

The influence of the hardening mechanisms by solid-solution and grain size on the ferrite nanohardness was analyzed in a low-carbon steel. A low-carbon steel alloyed was used to determine the effect of the composition on the ferrite nanohardness. The surface of each specimen was polished by vibration with colloidal silica suspension to obtain stress-free surfaces with minimal residual strain. The specimens were analyzed by nanoindentation, acquiring load-displacement curves, nanohardness and residual footprints by Scanning Probe Microscopy. Subsequently, an analysis by Scanning Electron Microscopy was performed using an integrated EPMA with EDS to determine the composition and elemental distribution in the ferrite grains. The nanohardness was classified according to the indentation zone: center or edge, correlating the nanohardness with the hardening mechanisms and composition. © 2019 MS&T19®


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