SIMULATION OF DEFORMATION-INDUCED DISSOLUTION OF ZR SEGREGATIONS IN AL LATTICE

Abstract

Aluminum (Al) and zirconium (Zr) alloys have become popular due to their excellentthermal stability and good electrical conductivity, but their main disadvantage is their rather lowhardness (<75 Hv) even after severe plastic deformation. The paper presents the results of numericalsimulation by the method of molecular dynamics of the deformation-induced dissolution of Zr inthe Al lattice. Cases of longitudinal and transverse arrangement of segregations were considered.It has been established that in the longitudinal position, the dissolution of the Zr segregation in theAl structure occurs more intensively than in the transverse position. It is shown that the lower thestrain rate, the greater the dissolution of Zr in the Al lattice, and the pres-ence of a vacancy in thelattice contributes to a greater dissolution of segregation.