B93 High-strength Aluminum Alloy Hot Compression Deformation And Fracture Behavior Of Simulation Study

In order to realize the industrial production and satisfy the demand for aerospace, the simulation method has been used in the research of the compression deformation and ductile fracture criteria for B93Aluminum alloy. The hot deformation rule of alloy was researched by the DEFORM software. The hot process parameter was optimized. Meanwhile, the behavior damage and ductile fracture for alloy was further studied. With the combination of simulation technology and G-T-N damage model, the mechanism of damage and ductile fracture was investigated. The research has been well predicted the damage for B93alloy by the means of the new damage and ductile fracture criteria. The main contents are:1. The hot deformation process was simulated by the DEFORM, the conclusion is that deform temperature and strain rate were influenced the deform process. The optimization parameter of hot process was:deform temperature:420℃、strain rate:0.001s-12. The basic mechanisms of ductile fracture are divided into two modes which are tension-type mode and shear-type mode according to the analysis of experimental results and G-T-N damage model.3. The comparison of experimental results, including tension, and compression, with numerical analysis results confirms the validity of the newly proposed ductile fracture criterion on B93alloy. The new ductile fracture criterion is then used on predicting ductile fracture in B93aluminum alloy forming processes.4. The crack propagation process and stress intensity factor were simulated by the ABAQUS software, and the conclusion was showed that the simulate result was accurate compared with experiment.