Publication result detail

Fractography of AlCoCrFeNiTi0.5 powder multi-principal-element alloy

MORAVČÍK, I.; HANUSOVÁ, P.; ČUPERA, J.; ZAPLETAL, J.; ČÍŽEK, J.; DLOUHÝ, I.

Original Title

Fractography of AlCoCrFeNiTi0.5 powder multi-principal-element alloy

English Title

Fractography of AlCoCrFeNiTi0.5 powder multi-principal-element alloy

Type

Paper in proceedings (conference paper)

Original Abstract

Multi-principal element alloys are new class of materials forming single major multi element solid solutions phases. AlCoCrFeNiTi0.5 bulk alloy has been obtained by a combination of high-energy milling and spark plasma sintering. Three point bending test, Vickers microhardness test, X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods were utilized to observe mechano-chemical reactions during milling, sintered bul alloy behavior and microstructures before and after annealing and mechanical performance. Bulk alloy consists of combination of four phases, namely major FCC and ordered B2 phase and minor σ and carbide phase with ultra-fine grains. Highest bending strength obtained was 1275 MPa with 97.52 GPa elastic modulus. Structure has been revealed to be somewhat brittle with low-energy brittle fracture with no apparent plastic deformation in fracture surfaces. This can be the result of synergic effect of extreme grain refinement and brittle ordered phases presence

English abstract

Multi-principal element alloys are new class of materials forming single major multi element solid solutions phases. AlCoCrFeNiTi0.5 bulk alloy has been obtained by a combination of high-energy milling and spark plasma sintering. Three point bending test, Vickers microhardness test, X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods were utilized to observe mechano-chemical reactions during milling, sintered bul alloy behavior and microstructures before and after annealing and mechanical performance. Bulk alloy consists of combination of four phases, namely major FCC and ordered B2 phase and minor σ and carbide phase with ultra-fine grains. Highest bending strength obtained was 1275 MPa with 97.52 GPa elastic modulus. Structure has been revealed to be somewhat brittle with low-energy brittle fracture with no apparent plastic deformation in fracture surfaces. This can be the result of synergic effect of extreme grain refinement and brittle ordered phases presence

Keywords

multi-principal element alloy, mechanical alloying, powder metallurgy, bending

Key words in English

multi-principal element alloy, mechanical alloying, powder metallurgy, bending

Authors

MORAVČÍK, I.; HANUSOVÁ, P.; ČUPERA, J.; ZAPLETAL, J.; ČÍŽEK, J.; DLOUHÝ, I.

RIV year

2017

Released

03.06.2016

Location

Brno

ISBN

978-80-214-5358-6

Book

MULTI- SCALE DESIGN OF ADVANCED MATERIALS. 2016

Pages from

25

Pages to

29

Pages count

86

URL

http://ime.fme.vutbr.cz/images/umvi/aktuality/mikulov_2016/sbornik_2016.pdf

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@inproceedings{BUT130750,
  author="Igor {Moravčík} and Petra {Hanusová} and Jan {Čupera} and Josef {Zapletal} and Jan {Čížek} and Ivo {Dlouhý}",
  title="Fractography of AlCoCrFeNiTi0.5 powder
multi-principal-element alloy",
  booktitle="MULTI- SCALE DESIGN OF ADVANCED MATERIALS. 2016",
  year="2016",
  number="2",
  pages="25--29",
  address="Brno",
  isbn="978-80-214-5358-6",
  url="http://ime.fme.vutbr.cz/images/umvi/aktuality/mikulov_2016/sbornik_2016.pdf"
}