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

Abstract
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 . 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.