Modeling of precipitation hardening for the naturally aged Al-Mg-Si-Cu alloy AA6111
Modeling of precipitation hardening for the naturally aged Al-Mg-Si-Cu alloy AA6111
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DOI：
10.1016/s1359-6454(03)00167-8
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发表时间：
2003-07-16
期刊：
影响因子：
9.4
通讯作者：
Poole, WJ
中科院分区：
文献类型：
--
作者：
Esmaeili, S;Lloyd, DJ;Poole, WJ
自然衰老对Al-Mg-Si-Cu合金AA6111的人工衰老行为的影响通过等温量热法检查，并在新的动力学模型中分析结果。该模型描述了合金衰老过程中同时降水形成和簇溶解的动力学，其自然衰老水平可变。然后将动力学模型与AA6111最近开发的屈服强度模型相结合，以预测天然衰老合金的降水硬化行为。通过模型的预测与独立的实验结果之间的一致性来验证这两个模型的有效性。 （c）2003 Acta Mitalietia Inc.由Elsevier Science Ltd.发布的所有权利保留。
The effect of natural aging on the artificial aging behavior of the Al-Mg-Si-Cu alloy AA6111 is examined by isothermal calorimetry and the results are analyzed in a new kinetic model. The model describes the kinetics of concurrent precipitate formation and cluster dissolution during artificial aging of the alloy with variable levels of natural aging. The kinetic model is then combined with a recently developed yield strength model for AA6111 to predict the precipitation hardening behavior of the naturally aged alloy. The validity of both models is verified by agreement between the predictions of the models and independent experimental results. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.