Mg和Si含量对一种低频电磁铸造新型高强Al-Mg-Si-Cu合金组织性能的影响

发布时间：2018-06-23 05:40

  本文选题：金属材料 + 强韧性　； 参考：《材料研究学报》2017年10期

【摘要】：结合金相组织观察及能谱分析、DSC热差分析、JMat Pro 5.0软件计算和室温力学性能测试,研究低频电磁铸造新型高强Al-Mg-Si-Cu合金铸态、挤压态和T6态的组织性能。结果表明,该新型合金系的均匀化温度和固溶温度可分别确定为540℃和550℃。Mg_2Si强化相能显著细化合金铸态组织且细化程度随其含量增大递增,而过量Si或过量Mg均能减弱细化剂和Mg_2Si相对合金铸态组织的细化作用。Mg的过量添加不会降低合金强度但可提高其延伸率至19%以上。该新型Al-Mg-Si-Cu合金中,当Mg质量分数为1.60%、Si质量分数为1.15%时,可获得较高强度(抗拉强度419 MPa、屈服强度362 MPa)而又不损害其塑性(延伸率18.75%)。
[Abstract]:The microstructure and properties of a new type of high strength Al-Mg-Si-Cu alloy in low frequency electromagnetic casting were studied by means of the calculation of JMat Pro 5.0 and mechanical properties at room temperature. The microstructure and properties of the new high strength Al-Mg-Si-Cu alloy in low frequency electromagnetic casting were studied by means of DSC thermal differential analysis (DSC) and energy spectrum analysis (EDS). The results show that the homogenization temperature and solution temperature of the new alloy system can be determined to be 540 鈩，

本文编号：2056032