INVESTIGADORES
ALVAREZ Iris
artículos
Título:
Labyrinth structure in Zry 4 as a consequence of strain aging effects on fatigue
Autor/es:
A ARMAS; I ALVAREZ; G MANSILLA
Revista:
JOURNAL OF MATERIALS SCIENCE
Editorial:
Springer
Referencias:
Año: 1992 vol. 27 p. 1307 - 1310
ISSN:
0022-2461
Resumen:
Dislocation structures in Zircaloy-4 samples fatigued at 623, 713 and 823 K were studied by transmission electron microscopy techniques. The samples, cycled with a total strain rate 2 x 10 -3 s -1, show a linear cyclic hardening rate which is maximum at temperatures where stronger strain ageing effects were reported. A two-wall structure similar to the labyrinth structure observed in fcc metals was found. This structure is attributed to the enhanced dislocation activity produced by strain ageing phenomena
