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- 저자 : Esmaeil Damavandi (검색결과 1 건)
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Textural Evaluation of Al–Si–Cu Alloy Processed by Route BC-ECAP
Esmaeil Damavandi,Salman Nourouzi,Sayed Mahmood Rabiee,Roohollah Jamaati,Jerzy A. Szpunar 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.8
In this study, route Bc of the equal channel angular pressing (ECAP) method has been successfully applied to the Al–Si–Cualloy at 400 °C. Scanning electron microscopy (SEM) and electron backscatter difraction (EBSD) were used to analyze themicrostructure. Texture evolution was studied by the X-ray difraction (XRD) technique. The microstructural results showedthat at least four passes of route BC need to access uniform distribution of fne intermetallic compounds (IMCs) and eutecticsilicon particles (ESPs). The particle stimulated nucleation (PSN) and continuous dynamic recrystallization (CDRX) aretwo important mechanisms to refne the aluminum matrix in Al–Si–Cu alloy. The texture results revealed that owing to achange in the rotation direction of route BC in consecutive passes, this process led to creating diferent types of textures, inboth qualitative and quantitative senses. The A*1Ѳ and A*2Ѳ were the strongest texture components after the fourth pass ofroute BC. Regardless of route A, the route BC-ECAP process led to strengthen the {100}⟨001⟩ and {011}⟨100⟩ componentsand weaken the {001}⟨310⟩ component. Three components, {100}⟨110⟩, {021}⟨501⟩, and {013}⟨313⟩ were developed byroute BC. The efects of route BC on texture homogeneity were also studied.
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