Abstract
The micro and nanostructure of Cu-Al, Cu-V and Cu-Ti alloys produced by reactive milling were analyzed using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Samples with different milling times (t= 0, 10, 20 and 30 h) were considered. The grain size, dislocation density and residual microstrain were evaluated form the XRD data using the Williamson-Hall and Klug-Alexander methods. The evolution of texture as a function of milling time was also studied using XRD. It was found, using TEM, that the grain size and dispersoid size were nanometric in all three alloys considered.
Highlights
Se analizó la micro y nano estructura de aleaciones Cu-Al, Cu-V y Cu-Ti obtenidas por molienda reactiva, mediante difracción de rayos X (XRD) y microscopía electrónica de transmisión (TEM)
The micro and nanostructure of Cu-Al, Cu-V and Cu-Ti alloys produced by reactive milling were analyzed using X-ray diffraction (XRD) and transmission electron microscopy (TEM)
The evolution of texture as a function of milling time was studied using XRD. It was found, using TEM, that the grain size and dispersoid size were nanometric in all three alloys considered
Summary
DONOSO, M.J. DIANEZ Y J.M. CRIADO embargo, en aleaciones de Cu-V-C, producidas por el mismo método de molienda reactiva, no se logró una mejora en la resistencia a la fluencia. Para comprender mejor los procesos de refinamiento de grano y de la generación de dispersoides cerámicos en estas aleaciones, es necesario estudiar el proceso de molienda reactiva que controla la micro y la nanoestructura. El objetivo de este trabajo es analizar micro y nanoestructura de aleaciones mecánicas de Cu-1,2 %p. Ti (%p.: porcentaje en peso) obtenidas mediante molienda reactiva, usando técnicas de difracción de rayos X (XRD) y microscopía electrónica de transmisión (TEM). El presente artículo es parte de una investigación más extensa, donde se estudia la influencia de la micro y la nanoestructura de aleaciones base cobre producidas por molienda reactiva, sobre el comportamiento en fluencia lenta de dichos materiales
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