Detail publikace

Characterization of Powder Metallurgy High-Entropy Alloys Prepared by Spark Plasma Sintering

DE ALMEIDA GOUVÊA, L. MORAVČÍK, I. ČÍŽEK, J. KRAJŇÁKOVÁ, P. JAN, V. DLOUHÝ, I.

Anglický název

Characterization of Powder Metallurgy High-Entropy Alloys Prepared by Spark Plasma Sintering

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

In the present work, the High-Entropy Alloys Al0.2Co1.5CrFeNi1.5Ti, Al1.3Co1.4Cr2.0FeNi4.0Ti4.0 and Al6.0Co1.2Cr2.5FeNi3.5Ti6.0 were produced by Mechanical Alloying and subsequent Spark Plasma Sintering processes to obtain properly densified bulks. The characterization of the materials was accomplished through X-Ray Diffraction, Scanning Electron Microscopy, microhardness and nanoindentation tests to identify and analyze the acquired microstructures’ features, phases formed, morphology and size of the grains and its average hardness. The results indicate that it was possible to obtain alloys presenting high values of hardness and multi-phase microstructures. The effect of the multiple phases on the microstructures was discussed in terms of its influence on the mechanical properties. A satisfying densification level of the materials was achieved with the selected parameters.

Anglický abstrakt

In the present work, the High-Entropy Alloys Al0.2Co1.5CrFeNi1.5Ti, Al1.3Co1.4Cr2.0FeNi4.0Ti4.0 and Al6.0Co1.2Cr2.5FeNi3.5Ti6.0 were produced by Mechanical Alloying and subsequent Spark Plasma Sintering processes to obtain properly densified bulks. The characterization of the materials was accomplished through X-Ray Diffraction, Scanning Electron Microscopy, microhardness and nanoindentation tests to identify and analyze the acquired microstructures’ features, phases formed, morphology and size of the grains and its average hardness. The results indicate that it was possible to obtain alloys presenting high values of hardness and multi-phase microstructures. The effect of the multiple phases on the microstructures was discussed in terms of its influence on the mechanical properties. A satisfying densification level of the materials was achieved with the selected parameters.

Klíčová slova anglicky

Multi-principal element alloys, Mechanical Alloying, Spark plasma sintering, Mechanical characterization

Vydáno

26.12.2018

Nakladatel

Trans Tech Publications

Místo

Switzerland

ISSN

0255-5476

Ročník

941

Číslo

1

Strany od–do

1053–1058

Počet stran

6

BIBTEX


@article{BUT152080,
  author="Larissa {Moravčíková de Almeida Gouvea} and Igor {Moravčík} and Jan {Čížek} and Petra {Krajňáková} and Vít {Jan} and Ivo {Dlouhý},
  title="Characterization of Powder Metallurgy High-Entropy Alloys Prepared by Spark Plasma Sintering",
  year="2018",
  volume="941",
  number="1",
  month="December",
  pages="1053--1058",
  publisher="Trans Tech Publications ",
  address="Switzerland",
  issn="0255-5476"
}