Detail publikačního výsledku

Preparation of AlCoCrFeNiTi0.5 High Entropy Alloy by SPS from Mechanically Alloyed Powders

MORAVČÍK, I.; ČÍŽEK, J.; HRYHA,E.; DLOUHÝ, I.

Original Title

Preparation of AlCoCrFeNiTi0.5 High Entropy Alloy by SPS from Mechanically Alloyed Powders

English Title

Preparation of AlCoCrFeNiTi0.5 High Entropy Alloy by SPS from Mechanically Alloyed Powders

Type

Paper in proceedings (conference paper)

Original Abstract

High entropy alloys are newly developed class of materials with excellent properties and promising application potential. The present work reports synthesis of inequiatomic alloy AlCoCrFeNiTi0.5 prepared by mechanical alloying (MA) in planetary ball mill followed by spark plasma sintering (SPS). Alloying behaviour, microstructure, basic mechanical properties and thermal behaviour of the alloy were investigated by means of XRD, SEM and DSC analyses and microhardness testing. It was found that the MA process parameters significantly influence homogeneity and size of the obtained alloyed powders. During MA, Cr-based supersaturated solid solution with body-centered cubic (BCC) structure was formed. After SPS at 1000°C the fine grained microstructure consisted of BCC solid solution and ordered FCC phase. Low levels of retained porosity were observed. The alloy exhibited a high hardness of 762HV.

English abstract

High entropy alloys are newly developed class of materials with excellent properties and promising application potential. The present work reports synthesis of inequiatomic alloy AlCoCrFeNiTi0.5 prepared by mechanical alloying (MA) in planetary ball mill followed by spark plasma sintering (SPS). Alloying behaviour, microstructure, basic mechanical properties and thermal behaviour of the alloy were investigated by means of XRD, SEM and DSC analyses and microhardness testing. It was found that the MA process parameters significantly influence homogeneity and size of the obtained alloyed powders. During MA, Cr-based supersaturated solid solution with body-centered cubic (BCC) structure was formed. After SPS at 1000°C the fine grained microstructure consisted of BCC solid solution and ordered FCC phase. Low levels of retained porosity were observed. The alloy exhibited a high hardness of 762HV.

Keywords

powder metallurgy, alloying, entropy

Key words in English

powder metallurgy, alloying, entropy

Authors

MORAVČÍK, I.; ČÍŽEK, J.; HRYHA,E.; DLOUHÝ, I.

RIV year

2016

Released

04.10.2015

Publisher

European powder metallurgy association

Location

Reims France

ISBN

978-1-899072-47-7

Book

EURO PM 2015 Proceedings

Pages from

1

Pages to

6

Pages count

500

URL

http://www.europm2015.com/

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@inproceedings{BUT120004,
  author="MORAVČÍK, I. and ČÍŽEK, J. and HRYHA,E. and DLOUHÝ, I.",
  title="Preparation of AlCoCrFeNiTi0.5 High Entropy Alloy by SPS 
from Mechanically Alloyed Powders",
  booktitle="EURO PM 2015 Proceedings",
  year="2015",
  pages="1--6",
  publisher="European powder metallurgy association",
  address="Reims France",
  isbn="978-1-899072-47-7",
  url="http://www.europm2015.com/"
}