Centerline Alloy Segregation Continuously Cast Cold Rolled Stainless

Abstract

The effect of homogenization on centerline segregation has been studied in twin roll cast aluminum alloy AA 8011. It is observed that second phase particles generally form when the alloy contains high Fe and Si. During twin-roll casting process, beta phase of AlFeSi segregates at the centre of the strip in the thickness range of 10–15 µm. Such phase has a needle shape morphology that inversely affects the formability . Phase transformation from β-AlFeSi to α-AlFeSi is found to occur when homogenization is carried out at high temperature. During the phase transformation, the morphology of second phase particles also changes from needle to circular shape. Furthermore, it is also observed that the area fraction of second phase particles decreases with an increase in time and temperature. If homogenization temperature is increased, particle size growth is found to be dominant on the spread of intermetallic particles.

Keywords

• Twin-roll cast
• Centerline segregation
• Homogenization
• Morphology

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Acknowledgements

Authors wish to acknowledge Mr. RN Chouhan and JNARDDC Nagpur for providing Twin roll cast AA 8011. Authors also wish to acknowledge Mr. Amit Singh (IIT Gandhinagar) and SAIF, IIT Bombay for performing SEM experiment. The support of IIT Gandhinagar is highly acknowledged.

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Authors and Affiliations

1. Department of Materials Science & Engineering, Indian Institute of Technology, Gandhinagar, 382355, India

   Sooraj Patel & Jyoti Mukhopadhyay

Corresponding author

Correspondence to Jyoti Mukhopadhyay .

Editor information

Editors and Affiliations

1. Metal Quality Solutions, LLC, Avonmore, PA, USA

   Dr. Corleen Chesonis

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© 2019 The Minerals, Metals & Materials Society

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Patel, S., Mukhopadhyay, J. (2019). Effect of Homogenization on Al-Fe-Si Centerline Segregation of Twin-Roll Cast Aluminum Alloy AA 8011. In: Chesonis, C. (eds) Light Metals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05864-7_44

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• DOI : https://doi.org/10.1007/978-3-030-05864-7_44

• Published: 16 February 2019

• Publisher Name: Springer, Cham

• Print ISBN: 978-3-030-05863-0

• Online ISBN: 978-3-030-05864-7

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