In situ study of the self-accommodating process during the martensitic transformation of a Cu-Zn-Al single crystal by synchrotron x-ray topography. 2: Dynamics of the process and role of crystalline defects

Journal Article · Fri Dec 01 00:00:00 EST 1995 · Acta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-7151(95)00127-H· OSTI ID:177994

Jourdan, C; Gastaldi, J; Grange, G ^[1]; Belkahla, S; Guenin, G ^[2]

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1. CRMC2-CNRS, Marseille (France)
2. INSA-GEMPPM, Villeurbanne (France)

The martensitic transformation of Cu-Zn-Al single crystals has been followed in situ and in real time by synchrotron X-ray topography. The authors have shown that at the M{sub s} temperature, the transformation proceeds by nucleation and growth of transformation variants associated by self-accommodating pairs. The nucleation of these variants is triggered by the crystal substructure. When the martensitic transformation is multivariant the behavior of the crystal substructure and the development of elastic stresses inducing a reversible curvature of lattice planes has been displayed.

• OSTI ID: 177994
• Journal Information: Acta Metallurgica et Materialia, Vol. 43, Issue 12; Other Information: PBD: Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
ZINC ALLOYS
ALUMINIUM ALLOYS
NUCLEATION
CRYSTAL GROWTH
CRYSTAL STRUCTURE
THERMOELASTICITY
CRYSTAL LATTICES
SHAPE MEMORY EFFECT
ORIENTATION
DISLOCATIONS
BURGERS VECTOR
PRECIPITATION