Publication detail

Influence of Ti on the Tensile Properties of the High-Strength Powder Metallurgy High Entropy Alloys

MORAVČÍK, I. GAMANOV, Š. MORAVČÍKOVA DE ALMEIDA GOUVÊA, L. KOVACOVA, Z. KITZMANTECH, M. NEUBAUER, E. DLOUHÝ, I.

Original Title

Influence of Ti on the Tensile Properties of the High-Strength Powder Metallurgy High Entropy Alloys

Type

journal article in Web of Science

Language

English

Original Abstract

The focus of this study is the evaluation of the influence of Ti concentration on the tensile properties of powder metallurgy high entropy alloys. Three Ni1.5Co1.5CrFeTiX alloys with X = 0.3; 0.5 and 0.7 were produced by mechanical alloying and spark plasma sintering. Additional annealing heat treatment at 1100 °C was utilized to obtain homogenous single-phase face centered cubic (FCC) microstructures, with minor oxide inclusions. The results show that Ti increases the strength of the alloys by increasing the average atomic size misfit i.e., solid solution strengthening. An excellent combination of mechanical properties can be obtained by the proposed method. For instance, annealed Ni1,5Co1,5CrFeTi0.7 alloy possessed the ultimate tensile strength as high as ~1600 MPa at a tensile ductility of ~9%, despite the oxide contamination. The presented results may serve as a guideline for future alloy design of novel, inclusion-tolerant materials for sustainable metallurgy

Keywords

multi principal element alloy; tensile strength; fracture; ductility; powder

Authors

MORAVČÍK, I.; GAMANOV, Š.; MORAVČÍKOVA DE ALMEIDA GOUVÊA, L.; KOVACOVA, Z.; KITZMANTECH, M.; NEUBAUER, E.; DLOUHÝ, I.

Released

26. 1. 2020

Publisher

MDPI

Location

Basel, Switzerland

ISBN

1996-1944

Periodical

Materials

Year of study

13

Number

3

State

Swiss Confederation

Pages to

18

Pages count

18

URL

https://www.mdpi.com/1996-1944/13/3/578

Full text in the Digital Library

http://hdl.handle.net/11012/193415

BibTex

@article{BUT161621,
  author="Igor {Moravčík} and Štěpán {Gamanov} and Larissa {Moravčíková de Almeida Gouvea} and Zuzana {Kovacova} and Michael {Kitzmantech} and Erich {Neubauer} and Ivo {Dlouhý}",
  title="Influence of Ti on the Tensile Properties of the High-Strength Powder Metallurgy High Entropy Alloys",
  journal="Materials",
  year="2020",
  volume="13",
  number="3",
  pages="18",
  doi="10.3390/ma13030578",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/13/3/578"
}