Publication detail

Synergic strengthening by oxide and coherent precipitate dispersions in high-entropy alloy prepared by powder metallurgy

MORAVČÍK, I. DE ALMEIDA GOUVÊA, L. HORNÍK, V. KOVACOVA, Z. KITZMANTEL, E. NEUBAUER, E. DLOUHÝ, I.

Original Title

Synergic strengthening by oxide and coherent precipitate dispersions in high-entropy alloy prepared by powder metallurgy

English Title

Synergic strengthening by oxide and coherent precipitate dispersions in high-entropy alloy prepared by powder metallurgy

Type

journal article in Web of Science

Language

en

Original Abstract

The present work deals with the synthesis and evaluation of the microstructural and mechanical properties of face-centred cubic Ni1.5Co1.5CrFeTi0.5 high-entropy alloy strengthened by nano-sized titanium oxide dispersion and coherent precipitates of Ni3Ti intermetallic phase produced by powder metallurgy. The alloy's properties are well tuneable by the use of proper heat treatment. The alloy exhibits an excellent combination of tensile strength and ductility, reaching an ultimate tensile strength of 1460 MPa and elongation of 14.5% in solution annealed state and 1660 MPa and 4.8% in the aged condition. Most of the strengthening contribution was attributed to Orowan-type strengthening mechanism

English abstract

The present work deals with the synthesis and evaluation of the microstructural and mechanical properties of face-centred cubic Ni1.5Co1.5CrFeTi0.5 high-entropy alloy strengthened by nano-sized titanium oxide dispersion and coherent precipitates of Ni3Ti intermetallic phase produced by powder metallurgy. The alloy's properties are well tuneable by the use of proper heat treatment. The alloy exhibits an excellent combination of tensile strength and ductility, reaching an ultimate tensile strength of 1460 MPa and elongation of 14.5% in solution annealed state and 1660 MPa and 4.8% in the aged condition. Most of the strengthening contribution was attributed to Orowan-type strengthening mechanism

Keywords

Mechanical alloying, Strength, Tension test, Oxide dispersion strengthened (ODS) alloy, Spark plasma sintering

Released

29.06.2018

Publisher

Elsevier

Location

London

ISBN

1359-6462

Periodical

SCRIPTA MATERIALIA

Year of study

157

Number

1

State

US

Pages from

24

Pages to

29

Pages count

6

URL

Documents

BibTex


@article{BUT149038,
  author="Igor {Moravčík} and Larissa {Moravčíková de Almeida Gouvea} and Vít {Horník} and Zuzana {Kovacova} and Erich {Kitzmantel} and Erich {Neubauer} and Ivo {Dlouhý}",
  title="Synergic strengthening by oxide and coherent precipitate dispersions in high-entropy alloy prepared by powder metallurgy",
  annote="The present work deals with the synthesis and evaluation of the microstructural and mechanical properties of
face-centred cubic Ni1.5Co1.5CrFeTi0.5 high-entropy alloy strengthened by nano-sized titanium oxide dispersion
and coherent precipitates of Ni3Ti intermetallic phase produced by powder metallurgy. The alloy's properties
are well tuneable by the use of proper heat treatment. The alloy exhibits an excellent combination of tensile
strength and ductility, reaching an ultimate tensile strength of 1460 MPa and elongation of 14.5% in solution
annealed state and 1660 MPa and 4.8% in the aged condition. Most of the strengthening contribution was attributed
to Orowan-type strengthening mechanism",
  address="Elsevier",
  chapter="149038",
  doi="10.1016/j.scriptamat.2018.07.034",
  howpublished="online",
  institution="Elsevier",
  number="1",
  volume="157",
  year="2018",
  month="june",
  pages="24--29",
  publisher="Elsevier",
  type="journal article in Web of Science"
}