Effect of Strain-Hardening Induced Grain Refinement on Springback in Microtube Press Bending Process

Cho Pei Jiang

doi:10.4028/www.scientific.net/KEM.528.111

Paper Titles

A Correlation between the Magnetic Behaviour and Damage of Metal Materials under Plastic Deformations
p.71

Limit Plastic State of Notched Stripes with Stress State Dependent Properties
p.79

Modes of Stability Loss of Materials
p.89

Identification of Defects in an Elastic Body by Means of the Boundary Measurements
p.101

Effect of Strain-Hardening Induced Grain Refinement on Springback in Microtube Press Bending Process
p.111

Investigation of the Asymptotic Behavior of Stresses at the Tip of Wedge- and Cone-Shaped Cracks
p.119

3-D Model of the Periodic Structure Punch Sliding upon the Viscoelastic Base with Incompressible Fluid in the Contact Gap
p.127

Grain Refinement of AZ61/SiCp Magnesium Matrix Composites for Tubes Extruded by Hot Extrusion Processes
p.135

Theory of Phase Transformations in the Mechanics of Solids and its Applications for Description of Fracture, Formation of Nanostructures and Thin Semiconductor Films Growth
p.145

HomeKey Engineering MaterialsKey Engineering Materials Vol. 528Effect of Strain-Hardening Induced Grain...

Effect of Strain-Hardening Induced Grain Refinement on Springback in Microtube Press Bending Process

Abstract:

Seamless stainless microtube (SUS 304L) was selected for a detailed investigation of the strain-hardening influencing grain refinement and microstructural evolution during processing by varying press bending angles. The problem was approached in three stages. First, the microtubes were annealed to examine the initial grain size and analyzed the effect of grain size on mechanical properties by performing a tensile test. Second, a microtube press bending system was developed to observe springback behavior. Third, the microstructure of the microtube with different press bending angle was observed to investigate the effect of strain-hardening induced grain refinement on springback behavior. As a result, the occurrence of grain refinement reduced the springback amount. The mechanism of microstructure development in the shear zone during the press bending process is needle like, twin band and equiaxed and small rounded grains sequentially.

You might also be interested in these eBooks

Deformation and Fracture in Technological Processes

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 528)

Pages:

111-118

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.528.111

Citation:

Cite this paper

Online since:

November 2012

Authors:

Cho Pei Jiang

Keywords:

Grain Refinement, Press Bending, Springback, Strain-Hardening

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] C.H. Chen, J.T. Gau, R.S. Lee, An Experimental and Analytical Study on the Limit Drawing Ratio of Stainless Steel 304 Foils for Microsheet Forming, Mater. Manuf. Process. 24 (2009) 1256-1265.

DOI: 10.1080/10426910903129786

Google Scholar

[2] C. Xu, M. Furukawa, Z. Horita, T.G. Langdon, The evolution of homogeneity and grain refinement during equal-channel angular pressing: A model for grain refinement in ECAP, Mater. Sci. Eng. A 398 (2005) 66-76.

DOI: 10.1016/j.msea.2005.03.083

Google Scholar

[3] H.Q. Sun, Y.N. Shi, M.X. Zhang, K. Lu, Plastic strain-induced grain refinement in the nanometer scale in a Mg alloy, Acta Mater. 55 (2007) 975-982.

DOI: 10.1016/j.actamat.2006.09.018

Google Scholar

[4] O. Bouaziz, N. Guelton, Modelling of TWIP effect on work-hardening, Mater. Sci. Eng. A 319-321 (2001) 246-249.

DOI: 10.1016/s0921-5093(00)02019-0

Google Scholar

[5] C.C. Chen, C. P Jiang, Grain Size Efect in the Micro V-Bending Process of Thin Metal Sheets, Mater. Manuf. Process. 26 (2011) 78-83.

DOI: 10.1080/10426911003636910

Google Scholar

[6] A. Belyakov, K. Tsuzaki, H. Miura, T. Sakai, Effect of initial microstructure on grain refinement in a stainless steel by large strain deformation, Acta Mater. 51 (2003) 847-861.

DOI: 10.1016/s1359-6454(02)00476-7

Google Scholar