The Mechanical Properties of AA2024 as Function of the Interrupted Ageing Conditions

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Abstract:

A comprehensive and systematic study using hardness, tensile test and Kahn tear test was undertaken to follow property development during the recently promoted interrupted ageing treatment. In contrast to the reported claims hardness remains lower than that of single stage heat treatment. Toughness does not improve substantially and deteriorates further as re-ageing time is prolonged. For most cases, the effect of interrupted ageing could not produce a simultaneous improvement in mechanical properties. TEM observations indicate the size and distribution co-existing S” and S phases upon re-ageing depend on interrupted condition.

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Materials Science Forum (Volumes 638-642)

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449-454

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January 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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