Factor for Improvement of Plastic Workability in Magnesium Alloy Pipes through Processing by Torsion and Back-Torsion

Hayata Okazaki; Taro Kato; Mitsuaki Furui

doi:10.4028/p-Dtd09z

Paper Titles

Effect of Distributions of Low Angle Grain Boundary and Dislocation Density on Strength of Al-3mass%Mg by SPD
p.59

Constitutive Model and Impact Induced Fragmentation of W-Zr Alloy
p.65

Microstructure Observation of Al-Zn-Mg Alloy with High Mg Content
p.73

Eta Phase Precipitation at Equilibrium and in Strain Free ATI 718Plus
p.79

Factor for Improvement of Plastic Workability in Magnesium Alloy Pipes through Processing by Torsion and Back-Torsion
p.85

Effect of Process Condition and Test Environment on Tensile Properties in Cold-Rolled Al-Cu-Mg Alloys
p.91

Mass Production and Vast Application States of Bulk Metallic Glasses
p.97

Microstructure Based Flow Stress Modelling of Superalloy 718
p.103

Crystal-Defect-Associated Transformation Strain Paths of Electric Current Pulse (ECP) Induced α to β Transformation in Cu-40％Zn
p.109

HomeSolid State PhenomenaSolid State Phenomena Vol. 353Factor for Improvement of Plastic Workability in...

Factor for Improvement of Plastic Workability in Magnesium Alloy Pipes through Processing by Torsion and Back-Torsion

Abstract:

Magnesium alloys have the advantages being lightweight and high recyclability. On the other hands, it is thought that magnesium has the disadvantage of poor plastic workability at room temperature due to its crystal structure. Especially, in pipe materials, winkles occur on the compressed side during bending. We aim to improve the bending workability in magnesium alloy pipe by torsion and back-torsion. In this study, tensile and compressive tests using specimens of pipes processed by torsion and back-torsion showed reduction the difference of yield stress. Microstructural observation of processed pipes revealed reducing crystal grain size and forming deformation twinning. Vickers hardness tests shows increasing hardness by torsion and back-torsion. Moreover, bending tests showed decreasing flatting ratio by torsion and back-torsion. These results demonstrated that torsion and back-torsion have effect of improvement in bending workability for magnesium alloy pipes.

You might also be interested in these eBooks

International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications - THERMEC 2023

View Preview

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 353)

Pages:

85-90

DOI:

https://doi.org/10.4028/p-Dtd09z

Citation:

Cite this paper

Online since:

December 2023

Authors:

Hayata Okazaki*, Taro Kato, Mitsuaki Furui

Keywords:

AZ31 Magnesium Alloy, Back-Torsion, Bending Workability, Plastic Workability, Torsion

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] B.L. Mordike, T. Ebert, Magnesium: Properties – applications – potential, Materials Sci. and Eng. A. 302 (2001) 37-45.

Google Scholar

[2] I. Fukuda, M. Nakamura, N. Miyamoto, Y. Tanaka, Bending of AZ61 Magnesium Alloy Pipe Subjected to Lateral Load, J. of Solid Mechanics and Materials Eng. 7 (2013) 125-134.

DOI: 10.1299/jmmp.7.125

Google Scholar

[3] K.R. Gopi, H. Shivananda Nakaya, Sandeep Sahu, Investigation of Microstructure and Mechanical Properties of ECAP-Processed AM Series Magnesium Alloy, J. of Materi. Eng. and Perform. 25 (2016) 3737-3745.

DOI: 10.1007/s11665-016-2229-7

Google Scholar

[4] F. Schwarz, C. Eilers, L. Krüger, Mechanical properties of an AM20 magnesium alloy processed by accumulative roll-bonding, Materials Characterization. 105 (2015) 144-153.

DOI: 10.1016/j.matchar.2015.03.032

Google Scholar

[5] S. Alireza Torbati-Sarraf, T. G. Langdon, Properties of a ZK60 magnesium alloy processed by high-pressure torsion, J. of Alloys and Compounds. 613 (2014) 357-363.

DOI: 10.1016/j.jallcom.2014.06.056

Google Scholar

[6] M. Furui, T. Aida, Development of extrusion-torsion simultaneous processing for grain refinement in Magnesium alloys, IOP Comf. Series Materials Sci. and Eng. 63 (2014).

DOI: 10.1088/1757-899x/63/1/012005

Google Scholar

[7] R. Ma, Y. Zhao, Y. Wang, Grain refinement and mechanical properties improvement of AZ31 Mg alloy sheet obtained by two-stage rolling, Materials Sci. and Eng. A. 691 (2017) 81-87.

DOI: 10.1016/j.msea.2017.02.107

Google Scholar

[8] H. Anada, M. Shibata, M. Mizubayashi, M. Furui, S. Saji, F. Naiki, H. Takai, Strengthening of aluminum alloy pipes by back-torsion working, J. of Japan Institute of Light Metals. 53 (2003) 169-175.

DOI: 10.2464/jilm.53.169

Google Scholar

[9] L. Li, W. Liu, F. Qi, D. Wu, Z. Zhang, Effects of deformation twins on microstructure evolution, mechanical properties and corrosion behaviors in magnesium alloy – A review, J. of Magnesium and Alloys. 10 (2022) 2334-2353.

DOI: 10.1016/j.jma.2022.09.003

Google Scholar