Effect of Variable Manganese Content on Microstructure of Al-Cu Alloys

• Autorzy: Stąpór S. , Górny M. , Kawalec M. , Gracz B.

Identyfikatory

DOI

10.24425/amm.2020.133703

• Języki publikacji: EN

Abstrakty

EN

The presented access the influence of Mn content (0-0.94 wt.%) on the course of the cooling curves, phase transformation, macrostructure, and microstructure of Al-Cu alloys for three series: initial (Series I), with the addition of an AlTi master (Series II), and modified with AlTi5B1 (Series III). The maximum degree of undercooling ΔT was determined based on the cooling curves. The surface density of the grains (N_A ) was determined and associated with the inverse of solidification interval 1/ΔT_k . Titanium (contained in the charge materials as well as the modifier) has a significant effect on the grinding of the primary grains in the tested alloys. A DSC thermal analysis allowed for the determination of phase transition temperatures under conditions close to equilibrium. For series II and III, the number of grains decreases above 0.2 wt.% Mn with a simultaneous increase in solidification interval 1/ΔT₂ . The presence of Al₂ Cu eutectics as well as the Cu-, Fe-, and Mn-containing phases in the examined samples was demonstrated using scanning electron microscopy.

Słowa kluczowe

EN

Al-Cu-Mn alloys; microstructure; macrostructure; DSC

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 4
• Strony: 1377--1383
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab. wzory

Twórcy

autor

Stąpór S.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Górny M.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Kawalec M.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

autor

Gracz B.

• AGH University of Science and Technology, Faculty of Foundry Engineering, 23 Reymonta Str., 30-059 Kraków, Poland

Bibliografia

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