INVESTIGADORES
AURELIO Gabriela
artículos
Título:
HIGH-TEMPERATURE ISOTHERMAL NUCLEATION OF THE METASTABLE OMEGA PHASE IN Zr-Nb ALLOYS
Autor/es:
AURELIO, G.; A. FERNÁNDEZ GUILLERMET; P. B. BOZZANO; CUELLO, G. J.
Revista:
ARCHIVES OF METALLURGY AND MATERIALS
Editorial:
POLISH ACAD SCIENCES COMMITTEE METALLURGY
Referencias:
Año: 2004 vol. 49 p. 457 - 467
ISSN:
1733-3490
Resumen:
This paper presents an experimental study and an analysis of the isolhennal nucleation of the metastable omega (o) phase in a high-Nb Zr-Nb alloy. The work combines in situ neutron Ihermodiffraction (NTD) with transmission e)ectron mieroscopy (TEM) observatioos at room temperature in quenchedlagedlquenehed alloys. The NTD data are interpreted on the bosis of a rather general lattice parameter ys. eomposition systematics establisbed very recently by ourselves. The results of the present study yield strong support to a picture of the isothermal bcc~o phase transformation which involves the initial formation of signifieantIy Nb-depleted o nucleii.
