Dynamic Strain Aging (DSA) in solid solubilized Mg-Gd alloys under compression at intermediate temperatures

  1. Chávez, Bryan W. 1
  2. Garcés, Gerardo 2
  3. Pérez, Pablo 2
  4. Barea, Rafael 1
  5. Adeva, Paloma 2
  1. 1 Departamento de Ingeniería Industrial, Universidad Nebrija
  2. 2 Departamento de Metalurgia Física, Centro Nacional de Investigaciones Metalúrgicas (CENIM, CSIC)
Revista:
Revista de metalurgia

ISSN: 0034-8570

Año de publicación: 2020

Volumen: 56

Número: 3

Páginas: 175-175

Tipo: Artículo

DOI: 10.3989/REVMETALM.175 DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Revista de metalurgia

Resumen

Tres aleaciones Mg-Gd ensayadas a compresión a temperaturas intermedias muestran un fenómeno de serrado dependiente de la velocidad de deformación y de la temperatura de ensayo. La aparición de este fenómeno se relaciona con la segregación de átomos de soluto en las dislocaciones móviles y/o en las fronteras de macla. Los ensayos de compresión se han realizado en un intervalo de temperaturas comprendido entre 25 y 300 °C y a velocidades de deformación comprendidas entre 4×10−5 y 8×10−3 s−1 con el fin de analizar el fenómeno de serrado, e implícitamente, el proceso de envejecimiento dinámico por deformación. Experimentalmente se ha comprobado que el aumento de la concentración de gadolinio en solución sólida disminuye la energía de activación del proceso.

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