EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES

J. Phys. IV France 01 (1991) C4-307-C5-315
DOI: 10.1051/jp4:1991446

NMR TECHNIQUES APPLIED TO MARTENSITIC TRANSFORMATION

C. DIMITROPOULOS¹, F. BORSA^{2, 3}, S. RUBINI⁴ and R. GOTTHARDT<sup>4

1</sup>  Institut de Physique Expérimentale, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
²  Dipartimento di Fisica "A. Volta" Università di Pavia, I-27100 Pavia, Italy
³  Department of Physics, Iowa State University, Ames IA 50011, U.S.A.
⁴  Institut de Physique Expérimentale, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

Abstract
The NMR parameters which should be measured in order to obtain microscopic information about Martensitic Phase Transformations are briefly discussed. Recent results of ²⁷Al and ⁶³ CU NMR are presented for both ternary alloy Cu-Zn-Al and binary alloys Cu-Zn and Ni-Al. It is shown that the NMR spectrum allows the study of the coexistence of martensite and austenite in the thermoelastic equilibrium range between M_S and M_F and that the nuclear spin lattice relaxation rate can detect charge density fluctuations at the "soft" interface between the A-phase and the M-phase.

© EDP Sciences 1991