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Textural Evaluation of Al–Si–Cu Alloy Processed by Route B C -ECAP
Metals and Materials International ( IF 3.5 ) Pub Date : 2021-04-11 , DOI: 10.1007/s12540-020-00953-w
Esmaeil Damavandi , Salman Nourouzi , Sayed Mahmood Rabiee , Roohollah Jamaati , Jerzy A. Szpunar

Abstract

In this study, route Bc of the equal channel angular pressing (ECAP) method has been successfully applied to the Al–Si–Cu alloy at 400 °C. Scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) were used to analyze the microstructure. Texture evolution was studied by the X-ray diffraction (XRD) technique. The microstructural results showed that at least four passes of route BC need to access uniform distribution of fine intermetallic compounds (IMCs) and eutectic silicon particles (ESPs). The particle stimulated nucleation (PSN) and continuous dynamic recrystallization (CDRX) are two important mechanisms to refine the aluminum matrix in Al–Si–Cu alloy. The texture results revealed that owing to a change in the rotation direction of route BC in consecutive passes, this process led to creating different types of textures, in both qualitative and quantitative senses. The A*1Ѳ and A*2Ѳ were the strongest texture components after the fourth pass of route BC. Regardless of route A, the route BC-ECAP process led to strengthen the {100}〈001〉 and {011}〈100〉 components and weaken the {001}〈310〉 component. Three components, {100}〈110〉, {021}〈501〉, and {013}〈313〉 were developed by route BC. The effects of route BC on texture homogeneity were also studied.

Graphic Abstract



中文翻译:

BC -ECAP工艺处理的Al-Si-Cu合金的组织评价

摘要

在这项研究中,等通道转角挤压(ECAP)方法的Bc方法已成功应用于400°C的Al-Si-Cu合金。扫描电子显微镜(SEM)和电子背散射衍射(EBSD)被用来分析微观结构。通过X射线衍射(XRD)技术研究了纹理演变。微观结构结果表明,路线B C至少需要经过四次,才能均匀分布精细的金属间化合物(IMC)和低共熔硅颗粒(ESP)。颗粒激发成核(PSN)和连续动态重结晶(CDRX)是精制Al-Si-Cu合金中铝基体的两个重要机制。纹理结果表明,由于路径B C的旋转方向的变化在连续的过程中,此过程导致在定性和定量意义上创建不同类型的纹理。在路线B C的第四次通过之后,A *1Ѳ和A *2Ѳ是最强的纹理成分。无论路线A如何,路线B C -ECAP流程都会增强{100} 〈001〉和{011} 〈100〉分量,并削弱{001} 〈310〉分量。{100} 〈110〉,{021} 〈501〉和{013} 〈313〉这三个成分是通过路线B C开发的。还研究了路线B C对质地均匀性的影响。

图形摘要

更新日期:2021-04-11
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