当前位置：
X-MOL 学术
›
Adv. Eng. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Effect of Homogenization Process on Microstructure of Al–Zn–Mg–Cu Aluminum Alloys
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2023-04-08 , DOI: 10.1002/adem.202201854 Huang Rensong 1 , Yang Hongfu 1 , Wan Li 1 , Zheng Shanju 1 , Li Mengnie 1 , Sivasankar Koppala 2
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2023-04-08 , DOI: 10.1002/adem.202201854 Huang Rensong 1 , Yang Hongfu 1 , Wan Li 1 , Zheng Shanju 1 , Li Mengnie 1 , Sivasankar Koppala 2
Affiliation
|
Herein, the best homogenization process of 466.5 °C × 36 h + 490 °C × (14–26.4 h) that can completely eliminate the coarse phases σ[Mg(Zn, Al, Cu)2] and S(Al2CuMg) in the Al–Zn–Mg–Cu aluminum alloy is developed. The homogenization process is determined by the method of calculation phase diagram, and the experimental verification. It is shown in the results that, first, in the microstructure of the as-cast alloys, the crystal structure of the σ[Mg(Zn, Al, Cu)2], Al7Cu2Fe, and Mg2Si phases is determined. Second, during the homogenization process, the σ[Mg(Zn, Al, Cu)2] phase dissolves and also transforms into the S(Al2CuMg) phase. Most importantly, the dissolution temperature range of the σ[Mg(Zn, Al, Cu)2], S(Al2CuMg), and Al7Cu2Fe phases is determined from 472.56 to 476.36 °C, from 484.09 to 485.39 °C, and from 540.18 to 547.23 °C, respectively. At best homogenization process, the residual Al7Cu2Fe phase area fraction ranges from 1.28 ± 0.16% to 1.60 ± 0.18%. In addition, dispersed η(MgZn2) phase precipitates in supersaturated Al-matrix during differential scanning calorimeter heating. And, the concentration differences between the grain center and the eutectic of structure of Zn, Mg and Cu regression equations are established, which can provide some reference for the design of experimental parameters, thus reducing the experimental workload.
中文翻译：
均匀化工艺对 Al-Zn-Mg-Cu 铝合金显微组织的影响
在此，最佳均匀化工艺为466.5 ℃ × 36 h + 490 ℃ × (14~26.4 h)，可以完全消除粗大相σ [ Mg(Zn, Al, Cu) 2 ]和S(Al 2 CuMg)开发出Al-Zn-Mg-Cu铝合金。通过计算相图的方法确定均质过程，并进行实验验证。结果表明，首先，在铸态合金的显微组织中，σ [Mg(Zn,Al,Cu) 2 ]、Al 7 Cu 2 Fe和Mg 2 Si相的晶体结构为决定。其次，在均匀化过程中，σ [Mg(Zn, Al, Cu) 2]相溶解并转变成S(Al 2 CuMg)相。最重要的是， σ [Mg(Zn, Al, Cu) 2 ]、S(Al 2 CuMg) 和 Al 7 Cu 2 Fe相的溶解温度范围确定为 472.56 至 476.36 °C、484.09 至 485.39 °C C，分别为540.18至547.23°C。在最佳均质化过程中，残余Al 7 Cu 2 Fe相面积分数范围为1.28±0.16%至1.60±0.18%。此外，分散的η (MgZn 2) 相在差示扫描量热仪加热过程中在过饱和铝基体中沉淀。并且建立了晶粒中心和共晶结构中Zn、Mg、Cu浓度差的回归方程，可为实验参数的设计提供一定的参考，从而减少实验工作量。
更新日期：2023-04-08
中文翻译：
均匀化工艺对 Al-Zn-Mg-Cu 铝合金显微组织的影响
在此，最佳均匀化工艺为466.5 ℃ × 36 h + 490 ℃ × (14~26.4 h)，可以完全消除粗大相σ [ Mg(Zn, Al, Cu) 2 ]和S(Al 2 CuMg)开发出Al-Zn-Mg-Cu铝合金。通过计算相图的方法确定均质过程，并进行实验验证。结果表明，首先，在铸态合金的显微组织中，σ [Mg(Zn,Al,Cu) 2 ]、Al 7 Cu 2 Fe和Mg 2 Si相的晶体结构为决定。其次，在均匀化过程中，σ [Mg(Zn, Al, Cu) 2]相溶解并转变成S(Al 2 CuMg)相。最重要的是， σ [Mg(Zn, Al, Cu) 2 ]、S(Al 2 CuMg) 和 Al 7 Cu 2 Fe相的溶解温度范围确定为 472.56 至 476.36 °C、484.09 至 485.39 °C C，分别为540.18至547.23°C。在最佳均质化过程中，残余Al 7 Cu 2 Fe相面积分数范围为1.28±0.16%至1.60±0.18%。此外，分散的η (MgZn 2) 相在差示扫描量热仪加热过程中在过饱和铝基体中沉淀。并且建立了晶粒中心和共晶结构中Zn、Mg、Cu浓度差的回归方程，可为实验参数的设计提供一定的参考，从而减少实验工作量。
京公网安备 11010802027423号