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Influence of parameters during induction heating cycle of 7075 aluminium alloys with RAP process

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conference contribution
posted on 2010-11-10, 13:12 authored by G. Vaneetveld, A. Rassili, Helen V. Atkinson
Thixoforging involves shaping alloys with a globular microstructure in the semi-solid state. To reach this kind of material, the Recrystallisation and Partial Melting (RAP) process can be used to obtain a globular microstructure from extruded material with liquid penetrating the recrystallised boundaries. Induction heating is used to apply the RAP process to slugs. One of the benefits of using this method of heating is the fast heating rate (20°C/s). This paper will help to improve heating parameters by showing their influence on 7075 aluminium alloy recrystallisation. These parameters are the heating rate; heating frequencies-power; presence or not of protective gas; position of the slug in the inductor; energy stored inside the slug; oxide layer on the slug side; chamfer of the slug upper corner.

History

Citation

Solid State Phenomena, 2008, 141-143, pp. 719-724

Published in

Solid State Phenomena

Publisher

Trans Tech Publications

issn

1012-0394

Copyright date

2008

Available date

2010-11-10

Publisher version

http://www.scientific.net/SSP.141-143.719

Language

en

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