The Effect of Nanometric α-Al2O3 Addition on Structure and Mechanical Properties of Feal Alloys Fabricated by LENS Technique

• Autorzy: Łazińska M. , Durejko T. , Polkowski W.

Identyfikatory

DOI

10.1515/amm-2017-0260

• Języki publikacji: EN

Abstrakty

EN

Results of the first principle study on a fabrication of FeAl intermetallic based alloy with an addition of nanometric αAl₂O₃ (n-Al₂O₃) particles by the LENS method and a subsequent characterization of the as received materials’ structure and properties, are shown in the present work. A series of samples were manufactured using LENS technique while a control of temperature and the size of melted metal pool. The presence of ceramics nanoparticles was not directly confirmed by microscopy observations. Neither aluminum nor oxygen content was not elevated in the material with n-Al₂O₃ content. Although, indirect methods revealed influence of n-Al₂O₃ addition on the manufactured elements structure. Analyses of porosity has shown that addition of 2% vol. n-Al₂O₃ significantly decreases this feature (~1%), as compared to the reference material made of pure FeAl intermetallic alloy (~5%). The addition of n-Al₂O₃ causes an increase of grain size in Fe40Al intermetallic alloy. An oxidation resistance has been also improved what was associated to the n-Al₂O₃ addition. Four times lower increase of samples mass was noticed for sample with the n-Al₂O₃ addition as compared to the pure Fe40Al intermetallic alloy.

Słowa kluczowe

EN

FeAl intermetallics; nano-Al2O3 addition; Laser Engineered Net Shaping

• 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: 2017
• Tom: Vol. 62, iss. 3
• Strony: 1703--1712
• Opis fizyczny: Bibliogr. 38 poz., rys., tab., wykr, wzory

Twórcy

autor

Łazińska M.

• Military University of Technology, Department of Advanced Materials and Technologies, 2 Kaliskiego Str., 00-908 Warsaw, Poland

autor

Durejko T.

• Military University of Technology, Department of Advanced Materials and Technologies, 2 Kaliskiego Str., 00-908 Warsaw, Poland

autor

Polkowski W.

• Military University of Technology, Department of Advanced Materials and Technologies, 2 Kaliskiego Str., 00-908 Warsaw, Poland

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).