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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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热暴露影响欠时效al--cu--mg--ag合金组织和性能的数值模拟
Keywords: 金属材料,欠时效,热暴露,显微组织,强化
Abstract:
？通过模型预测和对实验结果的拟合,建立了ω析出相与基体的界面能模型.在此基础上,根据伪二元假设和经典形核和长大理论,建立了动力学析出物理模型,预测欠时效态高cu/mg比al--cu--mg--ag合金在热暴露过程中析出相的演变和拉伸屈服强度.在165℃欠时效处理2h的al--cu--mg--ag合金在不同温度(150--250℃)热暴露不同时间(0--1000h)后,对其析出相组织和拉伸性能进行实验验证.结果表明,预测结果与实验结果吻合较好,验证了模型的可靠性.
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