In Situ Formation of TiB2 in Fe-B System with Titanium Addition and Its Influence on Phase Composition, Sintering Process and Mechanical Properties

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Abstract

Interaction of iron and boron at elevated temperatures results in the formation of an E
(Fe + Fe2B) eutectic phase that plays a great role in enhancing mass transport phenomena during
thermal annealing and therefore in the densification of sintered compacts. When cooled down, this
phase solidifies as interconnected hard and brittle material consisting of a continuous network of
Fe2B borides formed at the grain boundaries. To increase ductile behaviour, a change in precipitates’
stoichiometry was investigated by partially replacing iron borides by titanium borides. The powder
of elemental titanium was introduced to blend of iron and boron powders in order to induce TiB2
in situ formation. Titanium addition influence on microstructure, phase composition, density and
mechanical properties was investigated. The observations were supported with thermodynamic
calculations. The change in phase composition was analysed by means of dilatometry and X-ray
diraction (XRD) coupled with thermodynamic calculations.
Original languageEnglish
Article number4188
Number of pages12
JournalMaterials
Volume12
Publication statusPublished - 13 Dec 2019

Fingerprint

Borides
Titanium
Phase composition
Boron
Sintering
Iron
Mechanical properties
Boron Compounds
Brittleness
Densification
Powders
Eutectics
Grain boundaries
Mass transfer
Thermodynamics
Annealing
Microstructure
Temperature

Keywords

  • titanium diboride
  • titanium
  • boron
  • iron
  • Dilatometry
  • liquid phase
  • phase composition
  • sintering

ASJC Scopus subject areas

  • Metals and Alloys

Fields of Expertise

  • Advanced Materials Science

Cite this

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title = "In Situ Formation of TiB2 in Fe-B System with Titanium Addition and Its Influence on Phase Composition, Sintering Process and Mechanical Properties",
abstract = "Interaction of iron and boron at elevated temperatures results in the formation of an E(Fe + Fe2B) eutectic phase that plays a great role in enhancing mass transport phenomena duringthermal annealing and therefore in the densification of sintered compacts. When cooled down, thisphase solidifies as interconnected hard and brittle material consisting of a continuous network ofFe2B borides formed at the grain boundaries. To increase ductile behaviour, a change in precipitates’stoichiometry was investigated by partially replacing iron borides by titanium borides. The powderof elemental titanium was introduced to blend of iron and boron powders in order to induce TiB2in situ formation. Titanium addition influence on microstructure, phase composition, density andmechanical properties was investigated. The observations were supported with thermodynamiccalculations. The change in phase composition was analysed by means of dilatometry and X-raydiraction (XRD) coupled with thermodynamic calculations.",
keywords = "titanium diboride, titanium, boron, iron, Dilatometry, liquid phase, phase composition, sintering",
author = "Mateusz Skalon and Marek Hebda and Benedikt Schrode and Roland Resel and Jan Kazior and Christoph Sommitsch",
year = "2019",
month = "12",
day = "13",
language = "English",
volume = "12",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI AG",

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TY - JOUR

T1 - In Situ Formation of TiB2 in Fe-B System with Titanium Addition and Its Influence on Phase Composition, Sintering Process and Mechanical Properties

AU - Skalon, Mateusz

AU - Hebda, Marek

AU - Schrode, Benedikt

AU - Resel, Roland

AU - Kazior, Jan

AU - Sommitsch, Christoph

PY - 2019/12/13

Y1 - 2019/12/13

N2 - Interaction of iron and boron at elevated temperatures results in the formation of an E(Fe + Fe2B) eutectic phase that plays a great role in enhancing mass transport phenomena duringthermal annealing and therefore in the densification of sintered compacts. When cooled down, thisphase solidifies as interconnected hard and brittle material consisting of a continuous network ofFe2B borides formed at the grain boundaries. To increase ductile behaviour, a change in precipitates’stoichiometry was investigated by partially replacing iron borides by titanium borides. The powderof elemental titanium was introduced to blend of iron and boron powders in order to induce TiB2in situ formation. Titanium addition influence on microstructure, phase composition, density andmechanical properties was investigated. The observations were supported with thermodynamiccalculations. The change in phase composition was analysed by means of dilatometry and X-raydiraction (XRD) coupled with thermodynamic calculations.

AB - Interaction of iron and boron at elevated temperatures results in the formation of an E(Fe + Fe2B) eutectic phase that plays a great role in enhancing mass transport phenomena duringthermal annealing and therefore in the densification of sintered compacts. When cooled down, thisphase solidifies as interconnected hard and brittle material consisting of a continuous network ofFe2B borides formed at the grain boundaries. To increase ductile behaviour, a change in precipitates’stoichiometry was investigated by partially replacing iron borides by titanium borides. The powderof elemental titanium was introduced to blend of iron and boron powders in order to induce TiB2in situ formation. Titanium addition influence on microstructure, phase composition, density andmechanical properties was investigated. The observations were supported with thermodynamiccalculations. The change in phase composition was analysed by means of dilatometry and X-raydiraction (XRD) coupled with thermodynamic calculations.

KW - titanium diboride

KW - titanium

KW - boron

KW - iron

KW - Dilatometry

KW - liquid phase

KW - phase composition

KW - sintering

M3 - Article

VL - 12

JO - Materials

JF - Materials

SN - 1996-1944

M1 - 4188

ER -