Reaction mechanism, microstructure and properties of Ti–TiB insitu composite processed by spark plasma sintering

Chaudhari, Rajesh; Bauri, Ranjit

doi:10.1016/j.msea.2013.08.069

Cited by 20 publications

(8 citation statements)

References 22 publications

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“…Li et al (2001) investigated the microstructure evolution on Ti/BN powder blends having 3:2 Ti to BN molar ratio and reported after DSC analysis that TiN phase forms between 300−500°C, whereas TiB 2 and TiB phases form at the temperature range of 500−900°C. On the other hand, as stated above, in the presence of excess Ti, TiB 2 transforms to TiB at elevated temperatures (Chaudhari and Bauri, 2013;Zhang et al, 2013b). Furthermore, Yang et al (2013) reported for the Ti-BN system that N atoms dissolve into the α-Ti as interstitials and form α-TiN 0.3 .…”

Section: Methodsmentioning

confidence: 69%

“…Several studies were performed on in-situ composites utilising Ti together with reactants such as TiB 2 , B 4 C, B, C, and BN to form reinforcing phases such as TiB, TiB 2 , TiC, TiN by using reactive sintering, reactive hot pressing, spark plasma sintering, self-propagating high-temperature synthesis, and liquid metallurgical routes (Radhakrishna Bhat et al, 2002;Kim et al, 2013Kim et al, , 2011Feng et al, 2005;Atri et al, 1999;Chaudhari and Bauri, 2013;Wei et al, 2013;Panda and Chandran, 2003;Petukhov et al, 2007;Rangaraj et al, 2004;Yang et al, 2013;Yeh and Teng, 2006;Zhan et al, 2009;Contreras et al, 2004;Locci et al, 2006;Xinghong et al, 2002;Yeh and Chen, 2008;Zhang et al, 2013a;Gotman et al, 1998;Olevsky et al, 1996;Wang et al, 2012;Wen et al, 2001;Lu et al, 2002;Li et al, 2001Li et al, , 2015Qin et al, 2011;Das et al, 2014). Within this variety of combinations, Ti-B-N system has been studied by several authors (Rangaraj et al, 2004;Yang et al, 2013;Yeh and Teng, 2006;Olevsky et al, 1996;Li et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…The authors studied the potential reactions by taking consideration of the Ti-N and Ti-B phase diagrams and reported that TiN and TiB 2 are the most favourable reaction products in the Ti-BN system. However, it has been reported that in the presence of excess Ti, more specifically, if the average B concentration in the reaction zone is less than 18% in mass fraction, TiB 2 transforms to TiB at elevated temperatures (Chaudhari and Bauri, 2013;Zhang et al, 2013b).…”

Section: Introductionmentioning

confidence: 99%

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Dry sliding wear behaviour of Ti-TiB-TiN<SUB align="right">x in-situ composite synthesised by reactive hot pressing

et al. 2016

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Ti and its alloys are attractive materials for a variety of fields; however, a major problem of Ti and its alloys is their poor wear resistance. It is known that reinforcing Ti with hard ceramic phases can substantially improve the wear resistance. Thus, Ti-TiB-TiN x in-situ metal matrix composites were synthesised by reactive hot pressing utilising Ti/BN powder blends with 23:1 Ti:BN weight ratio. Ball-on-plate reciprocating dry sliding wear tests were performed against a 10 mm of alumina ball under 10 N normal load, at a frequency of 1 Hz, and with the total stroke length of 3 mm during 1,800 s. Results showed that the total wear volume loss was significantly decreased on the composite (11.4 ± 2.0 × 10 −3 mm 3) as compared to the unreinforced Ti (40.9 ± 4.2 × 10 −3 mm 3) due to the strengthening effect of the in-situ reinforcing phases.

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Section: Methodsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dry sliding wear behaviour of Ti-TiB-TiN<SUB align="right">x in-situ composite synthesised by reactive hot pressing

et al. 2016

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“…Using a short-time densi cation method can be useful when a ne-grained microstructure is required. SPS process can be used to fabricate metals, ceramics, and composite materials [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effects of in-situ formed TiB whiskers on microstructure and mechanical properties of spark plasma sintered Ti–B4C and Ti–TiB2 composites

2017

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Abstract. Monolithic titanium, Ti-1 wt% B 4 C, and Ti-2.5 wt% TiB 2 were spark plasma sintered at 1050 C for 5 min under 50 MPa. The e ects of B 4 C and TiB 2 additions on densi cation process, microstructural development, and mechanical properties of titanium were investigated. The results revealed that relative density of undoped as well as B 4 Cand TiB2-doped Ti samples reached s98-99%. X-ray di raction patterns, thermodynamic assessments, and microstructural investigations veri ed the in-situ formation of TiB whiskers in both composite samples as well as the appearance of TiC spheres in Ti-B 4 C composite. However, trace unreacted TiB2 and B4C additives remained in the composites as a result of incomplete chemical reactions due to short-time SPS process. Compared to undoped Ti sample, grain growth was hindered when the sample was doped by B4C or TiB 2 . Elongation, ultimate tensile strength, and Vickers hardness of B 4 C-or TiB 2 -doped samples were higher than those of monolithic titanium, but bending strength of ceramicdoped samples was signi cantly lower, compared to undoped titanium. These outcomes were discussed in detail and related to the presence/formation of several ceramic phases with di erent morphologies in Ti matrix.

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“…Esta diferencia será atribuible principalmente al proceso de fabricación pulvimetalúrgico convencional empleado, sin etapas de postprocesado ni densificación posterior y en una menor parte al posible error de medida del equipo empleado. Por otro lado estos valores han sido contrastados con los obtenidos por otros investigadores para titanios similares, como es el caso de Majumdar y Chaudhari (Majumdar et al 2008, Chaudhari, Bauri 2013, quienes a su vez han presentado también correlaciones entre el módulo de elasticidad obtenido por ultrasonidos y el obtenido mediante nanoindentación, reportando valores similares.…”

Section: Determinación Del Módulo Elástico Mediante Ultrasonidosunclassified

Estudio de la reactividad del titanio con partículas de adición por vía pulvimetalúrgica

Sanchis¹,

Fátima²

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Els estudis realitzats han permès concloure que la via pulvimetal•lúrgica convencional permet l'obtenció de materials compostos i aliatges base titani que ofereixen propietats d'interès industrial. S'ha avaluat la diversa reactivitat oferta pels diferents materials addicionats, i s'ha pogut determinar la influència d'aquesta reactivitat sobre les microestructures i fases metal•lúrgiques formades durant el procés, així com l'impacte i relació d'aquestes formacions microestructurals amb propietats mecàniques i tribològiques dels materials processats.

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Reaction mechanism, microstructure and properties of Ti–TiB insitu composite processed by spark plasma sintering

Cited by 20 publications

References 22 publications

Dry sliding wear behaviour of Ti-TiB-TiN<SUB align="right">x in-situ composite synthesised by reactive hot pressing

Dry sliding wear behaviour of Ti-TiB-TiN<SUB align="right">x in-situ composite synthesised by reactive hot pressing

Effects of in-situ formed TiB whiskers on microstructure and mechanical properties of spark plasma sintered Ti–B4C and Ti–TiB2 composites

Estudio de la reactividad del titanio con partículas de adición por vía pulvimetalúrgica

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