Influence of Process Parameters on Twin Roll Cast Strip of the Alloy AZ31

Gerrit Kurz; Jan Bohlen; Dietmar Letzig; Karl Ulrich  Kainer

doi:10.4028/www.scientific.net/MSF.765.205

Paper Titles

Microstructural Modeling of Mg Alloys and Experimental Validation
p.185

Ultrafast X-Ray Imaging and Modelling of Ultrasonic Cavitations in Liquid Metal
p.190

Melt Quenched High Pressure Die Casting (MQ-HPDC) of an A356 Alloy
p.195

Plasma Treatment Casting of Cast Aluminum 6XXX Wrought Alloys
p.200

Influence of Process Parameters on Twin Roll Cast Strip of the Alloy AZ31
p.205

A Synchrotron X-Ray Radiography Investigation of Induced Dendrite Fragmentation in Al-15wt%Cu
p.210

Relationship between Growth Rates and Dendritic Microstructure Parameters in Al-5wt. Zn Binary Alloy
p.215

Characterisation of Oxide Films in Al-Mg Alloy Melts
p.220

Modelling of the Effects of Entrainment Defects on Mechanical Properties in a Cast Al-Si-Mg Alloy
p.225

HomeMaterials Science ForumMaterials Science Forum Vol. 765Influence of Process Parameters on Twin Roll Cast...

Influence of Process Parameters on Twin Roll Cast Strip of the Alloy AZ31

Abstract:

Reducing vehicle weight and emissions by lightweight design is a major goal of the automotive industry. Magnesium as the lightest structural metal offers a significant weight saving potential compared to steel and aluminium. Cast magnesium components are widely used, e.g. as engine blocks or gear box housings. The application of magnesium sheets is currently hampered by the low formability of magnesium which means that a large number of rolling passes is required to roll a DC cast slab to final gauge sheet. This large number of rolling steps is the main reason for the high cost of magnesium sheets. Twin-roll casting (TRC) is an alternative, economic production process for the generation of fine-grained feedstock materials that subsequently can be warm rolled to thin sheets. It therefore receives attention in actual research and development projects for the application of magnesium alloys as prospective light metal solutions. This production process for thin strips combines solidification and rolling into one single production step and therefore saves a number of rolling and annealing passes in comparison to the conventional rolling process. The main goal of the activities at the Magnesium Innovation Centre MagIC of the Helmholtz-Centre Geesthacht (HZG) is the development of wrought magnesium alloys and their introduction into industrial, structural applications. The current focus of the research work is on alloy design and their processing for magnesium sheets produced by twin roll casting. In order to understand the influence of process parameters on the microstructure and texture the first twin roll casting experiments were performed with the alloy AZ31 (Mg-3Al-1Zn-Mn) as benchmark. As an example, the influence of melt temperature on the microstructure of the strip is presented and discussed with respect to arising material properties. Optimisation of process parameters of twin roll casting and the subsequent rolling of the sheets, offers the possibility to produce high quality sheet material.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 765)

Pages:

205-209

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.765.205

Citation:

Cite this paper

Online since:

July 2013

Authors:

Gerrit Kurz, Jan Bohlen, Dietmar Letzig, Karl Ulrich Kainer

Keywords:

AZ31, Magnesium, Magnesium Strip, Process Parameter, Twin Roll Casting (TRC)

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] F. Basson, D. Letzig, Aluminium twin roll casting transfers benefits to magnesium, Aluminium International Today, November/December 2010, 19-21.

DOI: 10.1002/9781119093428.ch88

Google Scholar

[2] D.H. St John, Overview of current international magnesium research and recent CAST CRC developments, J. Adv. Mater. Res. 29-30 (2007) 3-8.

Google Scholar

[3] S.S. Parks, G.T. Bae, J.G. Lee, D.H. Kang, K.S. Shin, N.J. Kim, Microstructure and mechanical properties of twin-roll strip cast Mg alloys, Mater. Sci. Forum 539-543 (2007) 119-126.

DOI: 10.4028/www.scientific.net/msf.539-543.119

Google Scholar

[4] R Kawalla, M Oswald, C. Schmidt, M. Ullmann, H.P. Vogt, N.D. Cuong, Development of a strip-rolling technology for Mg alloys based on the twin-roll-casting process, in: Magnesium Technology 2008, New Orleans, Louisiana, TMS, 2008, 177-182.

DOI: 10.1016/j.matpr.2015.05.013

Google Scholar

[5] H. Watari, T. Haga, R. Paisarn, N. Koga, K. Davey, Mechanical properties and metallurgical qualities of sheets manufactured by twin-roll casting, Key Eng. Mater. 345-346 (2007) 165-168.

DOI: 10.4028/www.scientific.net/kem.345-346.165

Google Scholar

[6] M. Aljarrah, E. Essadiqi, D.H. Kang, I.H. Jung, Solidification microstructure and mechanical properties of hot rolled and annealed Mg sheet produced through twin roll casting route, in: Light Metals Technology V, 5th Int. Conf. Light Metals Technology, 19-22 July 2011, Lueneburg, Germany, 331-334.

DOI: 10.4028/www.scientific.net/msf.690.331

Google Scholar

[7] V. Kree, J. Bohlen, D. Letzig, K.U. Kainer, Practical Metallography 5, 2004, 233-246.

DOI: 10.1515/pm-2004-410505

Google Scholar

[8] U. Haßlinger, L. Fuskova, Ch. Hartig, R. Günther, D. Letzig, K.U. Kainer, R. Bormann, Effects of Ceramic Inoculants and Rare Earth Phases on Microstructure and related Mechanical Properties of Magnesium alloys, in: K.U. Kainer (Ed), 8th Int. Conf. Magnesium Alloys and their Applications, 2009, 1260-1267.

DOI: 10.4028/www.scientific.net/msf.690.306

Google Scholar