Numéro
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82
International Conference on Martensitic Transformations
Page(s) C4-585 - C4-590
DOI https://doi.org/10.1051/jphyscol:1982492
ICOMAT-82
International Conference on Martensitic Transformations

J. Phys. Colloques 43 (1982) C4-585-C4-590

DOI: 10.1051/jphyscol:1982492

RELATIONSHIP BETWEEN SURFACE MARTENSITE, THIN FOIL AND BULK MARTENSITE

F.C. Lovey

Centro Atómico Bariloche, Comisión Nacional de Energía Atómica 8400-S.C. de Bariloche, Argentina


Abstract
The possibility that surface martensite can serve as nucleus for bulk martensite is investigated by transmission electron and light microscopy in ternary Cu-Zn-Al alloys. For this reason the relationship of the variants and structures between surface martensite, thin foil and bulk martensite is studied. It is known that the surface martensite can serve as nucleus of bulk martensite in samples with the surface close to a (011)ß pole. The necessity to compensate the shape deformation induces, in some cases, additional variants which were not present on the surface. In samples with the surface far away from the (011)ß pole it is found that the surface martensite can grow only in the thinnest region of the foil.