Abstract
The paper presents a mathematical model of plastic deformation in FCC materials strengthened with particles having L12 superstructure. The model is based on balance equations for various deformation defects with regard to their transformation during plastic deformation. Research results show that the size and distance between particles of the strengthening phase affect the thermal strengthening, strain hardening and the evolution of the dislocation subsystem of the FCC alloy strengthened with coherent particles with L12 superstructure. The temperature anomaly is detected for strength properties of materials having different volume fractions of the strengthening phase. It is shown that the incoherent strengthening phase increases the flow stress of the material and suppresses the temperature anomaly of its strength properties.
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