angular extrusion based on ABAQUS

 

 

MA Cai yun, LI Zhen hua

 

(School of Naval Architecture and Ocean Engineering, Zhejiang Ocean University, Zhoushan 316022, China)

 

 

Abstract: Aiming at equal channel angular extrusion process of Ti5553 alloy under non isothermal condition affected by lots of complicated factors, the value and distribution of stress and equivalent strain of the specimen in different friction coefficient, extrusion speed and extrusion temperature were researched, and high temperature deformation of Ti5553 alloy, the key technical of finite element analysis and the principle and method of equal channel angular extrusion were summarized. The model parameters of finite element analysis of Ti5553 alloy during equal channel angular extrusion were provided, and the 3D model of ECAE was established. The variation of the equivalent strain curve of three feature points at various friction coefficients, extrusion speeds and extrusion temperatures was analyzed based on the particle tracking method of ABAQUS. The results indicate that the equivalent strain begins to occur when the specimen is near the corner, and rapidly increases to maximum at the corner. With the increase of friction coefficient and extrusion speed, the equivalent strains occur in advance. The equivalent strain of P2 is greatly impacted by extrusion temperature and extrusion speed.

 

Key words: Ti5553 alloy; equal channel angular extrusion (ECAE); finite element analysis(FEM)