Development of mechanically alloyed and sintered W-1 wt.% Ni matrix composites reinforced with TiB2

Duygu Aǧaoǧullari; Özge Balci; O. Utku Demirkan; Hasan Gökçe; Aziz Genç; M. Lütfi Öveçoǧlu; Ismail Duman

doi:10.4028/www.scientific.net/SSP.194.194

Development of mechanically alloyed and sintered W-1 wt.% Ni matrix composites reinforced with TiB₂

Duygu Aǧaoǧullari^*, Özge Balci, O. Utku Demirkan, Hasan Gökçe, Aziz Genç, M. Lütfi Öveçoǧlu, Ismail Duman

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Istanbul Technical University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

9 Citations (Scopus)

Abstract

Due to improve the physical and mechanical properties of Ni activated W compacts, TiB₂ was added to the W-Ni matrix as reinforcing agent. W-Ni matrix composites were fabricated by using a combined method of mechanical alloying (MA), cold pressing and activated sintering. The amount of activated sintering aid (Ni) was kept constant as 1 wt.%. The effects of TiB2 content and mechanical alloying duration on the physical, microstructural and mechanical properties of activated sintered W-Ni compacts were investigated. The results showed that TiB₂ particles have a significant effect on the density and microhardness values of the sintered samples. After MA and sintering, formation of W₂B and NiTi intermetallic compounds were observed because of the decomposition of TiB₂. The relative density value of 91.21 % and microhardness value of 4.08±0.28 GPa of W-1 wt.% Ni samples respectively increased to 94.88 % and 5.64±0.28 GPa with the addition of 2 wt.% TiB₂.

Original language	English
Title of host publication	Solid Compounds of Transition Elements II
Pages	194-198
Number of pages	5
DOIs	https://doi.org/10.4028/www.scientific.net/SSP.194.194
Publication status	Published - 2013
Event	18th International Conference on Solid Compounds of Transtition Elements, SCTE 2012 - Lisbon, Portugal Duration: 31 Mar 2012 → 5 Apr 2012

Publication series

Name	Solid State Phenomena
Volume	194
ISSN (Print)	1012-0394

Conference

Conference	18th International Conference on Solid Compounds of Transtition Elements, SCTE 2012
Country/Territory	Portugal
City	Lisbon
Period	31/03/12 → 5/04/12

Keywords

Mechanical alloying
Ni activated sintering
Titanium diboride
Tungsten

Access to Document

10.4028/www.scientific.net/SSP.194.194

Cite this

@inproceedings{73066bc371a5471e8e8e6d7a392a3c0d,

title = "Development of mechanically alloyed and sintered W-1 wt.% Ni matrix composites reinforced with TiB2",

abstract = "Due to improve the physical and mechanical properties of Ni activated W compacts, TiB2 was added to the W-Ni matrix as reinforcing agent. W-Ni matrix composites were fabricated by using a combined method of mechanical alloying (MA), cold pressing and activated sintering. The amount of activated sintering aid (Ni) was kept constant as 1 wt.%. The effects of TiB2 content and mechanical alloying duration on the physical, microstructural and mechanical properties of activated sintered W-Ni compacts were investigated. The results showed that TiB2 particles have a significant effect on the density and microhardness values of the sintered samples. After MA and sintering, formation of W2B and NiTi intermetallic compounds were observed because of the decomposition of TiB2. The relative density value of 91.21 % and microhardness value of 4.08±0.28 GPa of W-1 wt.% Ni samples respectively increased to 94.88 % and 5.64±0.28 GPa with the addition of 2 wt.% TiB2.",

keywords = "Mechanical alloying, Ni activated sintering, Titanium diboride, Tungsten",

author = "Duygu Aǧaoǧullari and {\"O}zge Balci and {Utku Demirkan}, O. and Hasan G{\"o}k{\c c}e and Aziz Gen{\c c} and {L{\"u}tfi {\"O}ve{\c c}oǧlu}, M. and Ismail Duman",

year = "2013",

doi = "10.4028/www.scientific.net/SSP.194.194",

language = "English",

isbn = "9783037855195",

series = "Solid State Phenomena",

pages = "194--198",

booktitle = "Solid Compounds of Transition Elements II",

note = "18th International Conference on Solid Compounds of Transtition Elements, SCTE 2012 ; Conference date: 31-03-2012 Through 05-04-2012",

}

Aǧaoǧullari, D, Balci, Ö, Utku Demirkan, O, Gökçe, H, Genç, A, Lütfi Öveçoǧlu, M & Duman, I 2013, Development of mechanically alloyed and sintered W-1 wt.% Ni matrix composites reinforced with TiB₂. in Solid Compounds of Transition Elements II. Solid State Phenomena, vol. 194, pp. 194-198, 18th International Conference on Solid Compounds of Transtition Elements, SCTE 2012, Lisbon, Portugal, 31/03/12. https://doi.org/10.4028/www.scientific.net/SSP.194.194

TY - GEN

T1 - Development of mechanically alloyed and sintered W-1 wt.% Ni matrix composites reinforced with TiB2

AU - Aǧaoǧullari, Duygu

AU - Balci, Özge

AU - Utku Demirkan, O.

AU - Gökçe, Hasan

AU - Genç, Aziz

AU - Lütfi Öveçoǧlu, M.

AU - Duman, Ismail

PY - 2013

Y1 - 2013

N2 - Due to improve the physical and mechanical properties of Ni activated W compacts, TiB2 was added to the W-Ni matrix as reinforcing agent. W-Ni matrix composites were fabricated by using a combined method of mechanical alloying (MA), cold pressing and activated sintering. The amount of activated sintering aid (Ni) was kept constant as 1 wt.%. The effects of TiB2 content and mechanical alloying duration on the physical, microstructural and mechanical properties of activated sintered W-Ni compacts were investigated. The results showed that TiB2 particles have a significant effect on the density and microhardness values of the sintered samples. After MA and sintering, formation of W2B and NiTi intermetallic compounds were observed because of the decomposition of TiB2. The relative density value of 91.21 % and microhardness value of 4.08±0.28 GPa of W-1 wt.% Ni samples respectively increased to 94.88 % and 5.64±0.28 GPa with the addition of 2 wt.% TiB2.

AB - Due to improve the physical and mechanical properties of Ni activated W compacts, TiB2 was added to the W-Ni matrix as reinforcing agent. W-Ni matrix composites were fabricated by using a combined method of mechanical alloying (MA), cold pressing and activated sintering. The amount of activated sintering aid (Ni) was kept constant as 1 wt.%. The effects of TiB2 content and mechanical alloying duration on the physical, microstructural and mechanical properties of activated sintered W-Ni compacts were investigated. The results showed that TiB2 particles have a significant effect on the density and microhardness values of the sintered samples. After MA and sintering, formation of W2B and NiTi intermetallic compounds were observed because of the decomposition of TiB2. The relative density value of 91.21 % and microhardness value of 4.08±0.28 GPa of W-1 wt.% Ni samples respectively increased to 94.88 % and 5.64±0.28 GPa with the addition of 2 wt.% TiB2.

KW - Mechanical alloying

KW - Ni activated sintering

KW - Titanium diboride

KW - Tungsten

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M3 - Conference contribution

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SN - 9783037855195

T3 - Solid State Phenomena

SP - 194

EP - 198

BT - Solid Compounds of Transition Elements II

T2 - 18th International Conference on Solid Compounds of Transtition Elements, SCTE 2012

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