Analysis of shearing deformation in rolling-spinning forming of Ti-6Al-2Zr-1Mo-1V tubes

Jing Guo,Mei Zhan,He Yang

doi:10.1051/matecconf/20152103008

Abstract

In this work, an analytical study of the macroscopic deformation and microstructure evolution of Ti-6Al-2Zr-1Mo-1V alloys during rolling-spinning forming process was performed by developing Finite Element (FE) modeling using the ABAQUS/Explicit platform. The developed FE model was validated by comparing with experimental results. To investigate the shearing deformation during rolling-spinning process, representative nodes were selected in the FE model. The shearing strains of these nodes were obtained by modeling. The influence of shearing deformation in rolling-spinning forming process on microstructures was also analyzed. An optimal selection of process parameters was obtained to achieve better microstructure.

Highlights

As key lightweight components for gas and liquid transport, long thin-walled tubes with good mechanical properties have been increasingly used in the aerospace, aviation and related hightechnology industries [1]
The lines on the cross section return to parallel to the radial line, which reveals that shearing deformation occurs in cross-section in spinning process
While after spinning; the inclinations of these lines tend to be obvious. These phenomena indicate that shearing deformation in the longitude-section and outer surface mainly occurs during spinning process

Summary

Introduction

As key lightweight components for gas and liquid transport, long thin-walled tubes with good mechanical properties have been increasingly used in the aerospace, aviation and related hightechnology industries [1]. Mohebbi and Akbarzadeh used Finite Element (FE) method to study the redundant strains in flow forming of tubes Their results showed that the shearing deformation would bring redundant strains during flow forming process, and the magnitudes of shearing deformation would affect the dimension accuracy in flow forming of tubes [8]. These investigations in shearing deformation were only conducted in single forming process while for rolling-spinning process, which combines two different forming processes, shearing deformation would be different and needs to be further studied. Based on the FE model, the shearing deformation in rollingspinning process were investigated and analyzed

Establishment and validation of FE model

Results and discussion

Parameters influences on shearing deformation in rolling-spinning

Conclusion