Detail publikace

Effect of heat treatment on microstructure and mechanical properties of spark plasma sintered AlCoCrFeNiTi0.5 high entropy alloy

MORAVČÍK, I. ČÍŽEK, J. GAVENDOVÁ, P. SHEIKH, S. GUO, S. DLOUHÝ, I.

Originální název

Effect of heat treatment on microstructure and mechanical properties of spark plasma sintered AlCoCrFeNiTi0.5 high entropy alloy

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The present work is focused on synthesis and heat treatment on non-equiatomic AlCoCrFeNiTi0.5 high entropy alloy (HEA) with a composite structure reinforced by TiC nanoparticles. The initial alloy was prepared by mechanical alloying (MA) in a planetary ball mill, compacted by spark plasma sintering (SPS) and heat treated at different temperatures. Mechano-chemical reactions during the MA process as well as the microstructure and hardness of the SPS-ed compacts prior to and after the heat treatment were investigated. During MA, Cr-based supersaturated solid solution with the BCC structure was formed. After SPS at 1100 °C, the BCC solid solution decomposed into nano-grained microstructure consisting of FCC and ordered BCC solid solutions, σ phase, and in-situ formed TiC nanoparticles. The high hardness of the alloy (762 HV) was retained after the subsequent heat treatment at 1100 °C (603 HV). It was shown that the fabrication of TiC reinforced nanocomposites from elemental powders without the use of expensive nanograined powders can be achieved.

Klíčová slova

Composites; Multi-principal-element alloys alloy; SPS

Autoři

MORAVČÍK, I.; ČÍŽEK, J.; GAVENDOVÁ, P.; SHEIKH, S.; GUO, S.; DLOUHÝ, I.

Vydáno

17. 3. 2016

Nakladatel

ELSEVIER

Místo

USA

ISSN

0167-577X

Periodikum

MATERIALS LETTERS

Ročník

174

Číslo

1

Stát

Nizozemsko

Strany od

53

Strany do

56

Strany počet

4

URL

http://www.sciencedirect.com/science/article/pii/S0167577X16303998

BibTex

@article{BUT123733,
  author="Igor {Moravčík} and Jan {Čížek} and Petra {Krajňáková} and Saad {Sheikh} and Sheng {Guo} and Ivo {Dlouhý}",
  title="Effect of heat treatment on microstructure and mechanical properties of spark plasma sintered AlCoCrFeNiTi0.5 high entropy alloy",
  journal="MATERIALS LETTERS",
  year="2016",
  volume="174",
  number="1",
  pages="53--56",
  doi="10.1016/j.matlet.2016.03.077",
  issn="0167-577X",
  url="http://www.sciencedirect.com/science/article/pii/S0167577X16303998"
}