Simulation research on rolling of refractory metal tubular materials based on crystal plasticity theory
YANG Bowen
FAN Ming
CHENG Haibao
GUO Lin
JI Songshan
WANG Huibin
LI Shuai
Abstract：Based on the crystal plasticity theory,this study systematically analyzed the plastic deformation,stress-strain distribution,and texture evolution process during the Pilger rolling forming process through numerical simulation technology,in order to obtain the deformation law of the refractory metal seamless tube rolling process and provide theoretical support for process optimization.Research shows that the stress concentration in the deformation zone of refractory metal seamless tubes during the initial stage of rolling directly reflects the drastic changes in mechanical behavior.As the number of rolling passes increases,the mechanical uniformity gradually improves,and the stress distribution stabilizes at the final sizing stage,fully demonstrating the close coupling relationship between the rolling deformation and the stress state.In terms of texture evolution,the large plastic deformation in the reducing zone causes grain rotation,resulting in a shift in the basal texture density.In the wall-thinning zone,grains further rotate and reorganize,and the crystal orientation gradually gains dominance.After the sizing and finishing in the sizing zone,the texture state stabilizes.This research not only provides quantitative references for optimizing the rolling process parameters and designing the die structure of refractory metal seamless tubes,but also offers an important basis and practical guidance for enhancing the performance of key tubes in high-end equipment manufacturing and other fields.
Keywords：crystal plasticity finite elementpilger rollingseamless tubes of refractory metalsstress-strainstructural evolution
Publication Date：2025-11-20
Online Publishing Date：2026-01-06(First online date of this platform, not the publication date of the document)
Pages：5( 28-32 )