INVESTIGADORES
BOLMARO Raul Eduardo
artículos
Título:
Deformation Analysis on F138 Austenitic Stainless Steel: ECAE and Rolling
Autor/es:
NATALIA S. DE VINCENTIS; M. C. AVALOS; A.M. KLIAUGA; V. L . SORDI; NORBERT SCHELL; H.-G. BROKMEIER; BOLMARO, RAÚL E.
Revista:
IOP Conf. Series: Mat. Sci. Eng.
Editorial:
IOP Publishing
Referencias:
Año: 2014 vol. 63
ISSN:
1757-899X
Resumen:
Twinning is an alternative mechanism to achieve ultra-fine grain structures through
severe plastic deformation. The properties induced in a plastically deformed material are highly
dependent on the degree of deformation, accumulated deformation energy and details on grain
sizes and microstructure, which are on the scale of some tens of nanometers; therefore it is very
important to understand misorientation distributions and dislocation arrays developed in the
samples. In this work an F138 austenitic stainless steel was solution heat treated, deformed by
Equal Channel Angular Extrusion (ECAE) at room temperature up to four passes, and rolled up
to 70% thickness reduction at room temperature. The microstructure evolution was analyzed by
x-ray diffraction and domain sizes calculated by Convolutional Multiple Whole Profile (CMWP)
model, the misorientation boundaries were measured by electron backscattered diffraction
(EBSD), and transmission electron microscopy. Mechanical behavior was tested by tensile tests.