INVESTIGADORES
AVALOS Martina Cecilia
artículos
Título:
Crystallographic orientation relationships in the a!c00 martensitic transformation in an Fe?Mn?Al?Ni system
Autor/es:
J. M. VALLEJOS; C. SOBRERO; M AVALOS; J. SIGNORELLI; MALARRIA, J.A.
Revista:
JOURNAL OF APPLIED CRYSTALLOGRAPHY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2018 vol. 51 p. 1 - 8
ISSN:
0021-8898
Resumen:
The Fe43.5Mn34Al15Ni7.5 (at.%) alloy exhibits outstanding pseudoelasticbehaviour over a wide range of temperatures. This alloy undergoes an unusualmartensitic transformation from a disordered body-centred cubic () parentphase to a face-centred cubic ( 0) product phase. In the present work, theorientations of the parent and product phases for quenched samples wereanalysed by electron backscatter diffraction. Bain, Kurdjumow?Sachs, Pitsch,Nishiyama?Wassermann and Greninger?Troiano orientation relationshipsbetween the parent and product phases were compared with experimentalresults. The Pitsch relationship appears to be the most suitable to describe the! 0 martensitic transformation. This result provides experimental support tothe dislocation-based heterogeneous Bogers?Burgers type transformationmechanism. No indications of variant selection were detected in the thermallyactivated transformations.
