Research on the dynamic recrystallization and constitutive modelling of 2A12 aluminum alloy
WANG Zhe
CHENG Shaofeng
ZHANG Zongyuan
GUO Xiaofeng
NIU Yong
Abstract：Using a Gleeble-3800 thermal simulation experimental machine,isothermal compression tests were conducted on 2A12 aluminum alloy to study its high-temperature deformation behavior.The compression amount studied was 50％,with deformation temperatures ranging from 325 ℃ to 425℃,and strain rates from 0.001s-1 to 5 s-1.A dynamic recrystallization volume fraction prediction model for 2A12 aluminum alloy was established based on the Avrami equation.A constitutive model was developed based on a two-stage model of dynamic recovery and dynamic recrystallization.It is shown that the constructed constitutive model considering dynamic recovery and dynamic recrystallization is capable of accurately predicting the flow stress of 2A12 aluminum alloy under heat deformation conditions.The model can be embedded in finite element software,providing a theoretical basis for the numerical simulation of the aluminum alloy extrusion forming process,which is of great significance for optimizing the lightweight manufacturing process of aviation equipment.
Keywords：aluminum alloysdynamic recrystallizationconstitutive equations
Publication Date：2025-07-20
Online Publishing Date：2025-09-08(First online date of this platform, not the publication date of the document)
Pages：6( 55-60 )