Paper Titles
Prediction of Microstructure and Mechanical Properties in Aluminium Castings after Heat Treatment
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Influence of Crystallographic Texture on the High Cycle Fatigue of Extruded AZ31 Magnesium Alloy
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Strain Rate Effects on the Flow Behaviour and Microstructure of ECAPed Magnesium-Alloys
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Precipitation Hardening Behaviour of Al-2Sc Micro Sheets
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Solidification Microstructure and Mechanical Properties of Hot Rolled and Annealed Mg Sheet Produced through Twin Roll Casting Route
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Microstructure and Mechanical Properties of Nitrided and Chromized Short Steel Fiber Reinforced Aluminum Based P/M Composites
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Un-Bundled Carbon Nanotubes Reinforced Light Metal Composites via Powder Metallurgy Route
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Effect of Solution Heat Treatment Time on a Rheocast Al-Zn-Mg-Cu Alloy
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Effect of Hot Rolling on Microstructure and Texture Evolution of Mg-Li Based Alloy
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Solidification Microstructure and Mechanical Properties of Hot Rolled and Annealed Mg Sheet Produced through Twin Roll Casting Route

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Abstract:

The use of wrought magnesium for automobile structural components is an important component of the mass reduction strategy for automobiles to improve their fuel efficiency. Compared to Direct chill casting, Twin Roll Casting (TRC) allows major reduction of hot rolling steps in the production of Mg sheet due to the thin thickness of the as-cast strip. This TRC route can substantially reduce the time and cost to produce Mg alloy sheet product. In this work, AZ31 magnesium alloy was casted to 5 and 6 mm thick strips under different process conditions. Microstructure of these strips was analyzed using optical microscopy, SEM and EPMA. TRC strip was annealed under two different conditions: 2 hours at 330 and 1 hour at 400°C. It has been found that heat treatment at 400°C for 1 hour reduces centerline segregation significantly. TRC strips were rolled down to 2 mm and annealed at 450°C for 2 minutes. The average grain size was 4-6 µm and mechanical properties were comparable with commercial AZ31 sheet.

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Periodical:

Materials Science Forum (Volume 690)

Pages:

331-334

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.690.331

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Online since:

June 2011

Authors:

M. Aljarrah, Elhachmi Essadiqi, D.H. Kang, In Ho Jung

Keywords:

Annealing, Dendrite Arm Spacing, Hot Rolling, Segregation, Solidification, Twin Roll Casting (TRC)

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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References

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