J. Phys. IV France
Volume 112, October 2003
Page(s) 503 - 506

J. Phys. IV France
112 (2003) 503
DOI: 10.1051/jp4:2003934

The elastic strains in the particles inherited by the crystals of martensite, in Cu-A1-Mn alloys

I.R. Bubley, Yu.N. Koval and P.V. Titov

Institute of Metal Physics, National Academy of Sciences of Ukraine, Vernadsky St. 36, 03680 Kiev 142, Ukraine

Alloys Cu-A1-Mn containing wt. 12 % A1 and wt. 6-10 % Mn were investigated. The specimens were quenched from 1173 K in water and aged at 423 -773 K. In all alloys during the quenching the particles of phase CU 2.2Mn 0.8A1 were generated. These particles were inherited by martensite. The presence of coherence particles of CU 2.2Mn 0.8A1 phase, which are non transformed during cooling, lead to the deformation of crystalline lattice of martensite and particles. The AG (chemical driving force of austenite - martensite transformation) and martensitic stresses were evaluated approximate. The short - lived aging caused the increasing of the quantity of the phase CU 2.2Mn 0.8A1 and the temperature M $_{\rm s}$. The average martensitic stress, strength of alloys and the driving force AG were not changed in this case. Thus the short - lived aging did not change the conditions of the thermoelastic martensite forming.

© EDP Sciences 2003