In situ synthesis of titanium diboride composites through volume combustion

S. O. Yilmaz; E. Evin; O. Güler

doi:10.1179/026708310X12738371692851

In situ synthesis of titanium diboride composites through volume combustion

S. O. Yilmaz, E. Evin, O. Güler

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Hard in situ synthesis of TiB₂-Fe₂B metal matrix composite (MMC) has been synthesised by volume combustion synthesis (VCS) reactions of Fe-FeTi-FeB system. VCS samples were characterised by SEM, EDX, XRD and DTA. Results show that it is possible to synthesise in situ structured MMC samples (with TiB₂ and Fe₂B phases) by VCS. Metallographic investigations show that Fe₂B and TiB₂ are found dispersed throughout the metal matrix, and other borides are present in microlevel patches dispersed in a eutectic matrix. The Fe-TiB₂ composites sintered at temperature of 1200°C consist of three different regions, i.e. α-Fe, TiB₂ and Fe₂B regions. The increase in sintering temperature to 1400°C leads to a hypereutectic microstructure of the Fe-B binary system having TiB₂ grains uniformly distributed throughout the matrix. A semiliquid phase sintering occurred by increasing eutectic phase transformation temperatures to 1400°C, which increased the efficiency of VCS. On the other hand, increasing sintering time from 1 to 3 h decreased the volume fraction of α-Fe and increased the volume fraction TiB₂ phase.

Original language	English
Pages (from-to)	1123-1130
Number of pages	8
Journal	Materials Science and Technology (United Kingdom)
Volume	27
Issue number	7
DOIs	https://doi.org/10.1179/026708310X12738371692851
State	Published - Jul 2011
Externally published	Yes

Keywords

Composites
Mechanical alloying
Nucleation
Phase transformation
Self-propagating synthesis
X-ray diffraction

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10.1179/026708310X12738371692851

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title = "In situ synthesis of titanium diboride composites through volume combustion",

abstract = "Hard in situ synthesis of TiB2-Fe2B metal matrix composite (MMC) has been synthesised by volume combustion synthesis (VCS) reactions of Fe-FeTi-FeB system. VCS samples were characterised by SEM, EDX, XRD and DTA. Results show that it is possible to synthesise in situ structured MMC samples (with TiB2 and Fe2B phases) by VCS. Metallographic investigations show that Fe2B and TiB2 are found dispersed throughout the metal matrix, and other borides are present in microlevel patches dispersed in a eutectic matrix. The Fe-TiB2 composites sintered at temperature of 1200°C consist of three different regions, i.e. α-Fe, TiB2 and Fe2B regions. The increase in sintering temperature to 1400°C leads to a hypereutectic microstructure of the Fe-B binary system having TiB2 grains uniformly distributed throughout the matrix. A semiliquid phase sintering occurred by increasing eutectic phase transformation temperatures to 1400°C, which increased the efficiency of VCS. On the other hand, increasing sintering time from 1 to 3 h decreased the volume fraction of α-Fe and increased the volume fraction TiB2 phase.",

keywords = "Composites, Mechanical alloying, Nucleation, Phase transformation, Self-propagating synthesis, X-ray diffraction",

author = "Yilmaz, {S. O.} and E. Evin and O. G{\"u}ler",

year = "2011",

month = jul,

doi = "10.1179/026708310X12738371692851",

language = "English",

volume = "27",

pages = "1123--1130",

journal = "Materials Science and Technology (United Kingdom)",

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T1 - In situ synthesis of titanium diboride composites through volume combustion

AU - Yilmaz, S. O.

AU - Evin, E.

AU - Güler, O.

PY - 2011/7

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N2 - Hard in situ synthesis of TiB2-Fe2B metal matrix composite (MMC) has been synthesised by volume combustion synthesis (VCS) reactions of Fe-FeTi-FeB system. VCS samples were characterised by SEM, EDX, XRD and DTA. Results show that it is possible to synthesise in situ structured MMC samples (with TiB2 and Fe2B phases) by VCS. Metallographic investigations show that Fe2B and TiB2 are found dispersed throughout the metal matrix, and other borides are present in microlevel patches dispersed in a eutectic matrix. The Fe-TiB2 composites sintered at temperature of 1200°C consist of three different regions, i.e. α-Fe, TiB2 and Fe2B regions. The increase in sintering temperature to 1400°C leads to a hypereutectic microstructure of the Fe-B binary system having TiB2 grains uniformly distributed throughout the matrix. A semiliquid phase sintering occurred by increasing eutectic phase transformation temperatures to 1400°C, which increased the efficiency of VCS. On the other hand, increasing sintering time from 1 to 3 h decreased the volume fraction of α-Fe and increased the volume fraction TiB2 phase.

AB - Hard in situ synthesis of TiB2-Fe2B metal matrix composite (MMC) has been synthesised by volume combustion synthesis (VCS) reactions of Fe-FeTi-FeB system. VCS samples were characterised by SEM, EDX, XRD and DTA. Results show that it is possible to synthesise in situ structured MMC samples (with TiB2 and Fe2B phases) by VCS. Metallographic investigations show that Fe2B and TiB2 are found dispersed throughout the metal matrix, and other borides are present in microlevel patches dispersed in a eutectic matrix. The Fe-TiB2 composites sintered at temperature of 1200°C consist of three different regions, i.e. α-Fe, TiB2 and Fe2B regions. The increase in sintering temperature to 1400°C leads to a hypereutectic microstructure of the Fe-B binary system having TiB2 grains uniformly distributed throughout the matrix. A semiliquid phase sintering occurred by increasing eutectic phase transformation temperatures to 1400°C, which increased the efficiency of VCS. On the other hand, increasing sintering time from 1 to 3 h decreased the volume fraction of α-Fe and increased the volume fraction TiB2 phase.

KW - Composites

KW - Mechanical alloying

KW - Nucleation

KW - Phase transformation

KW - Self-propagating synthesis

KW - X-ray diffraction

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JO - Materials Science and Technology (United Kingdom)

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ER -

In situ synthesis of titanium diboride composites through volume combustion

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