Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution

Zhang, H.B.; Zhou, Yanchun; Bao, Yiwang; Li, M.S.

doi:10.1016/j.actamat.2004.04.015

Cited by 120 publications

(73 citation statements)

References 25 publications

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“…However, practical examples of such property tuning are scarce, essentially limited to oxidation studies where the excellent oxidation resistance of the alumina-forming MAX phases Ti 2 AlC and Ti 3 AlC 2 is retained also for solid solutions, e. g., Ti 3 (Si,Al)C 2 [14,15,16,17]. Solid-solution studies have mostly focused on exploring solid solution hardening effects [18,19,20,21,22,23], the evolution of the unit cell structure [24,25] or the possibility to synthesize new MAX phases [26,27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Cabioc’h¹,

Eklund²,

Mauchamp³

et al. 2013

Journal of the European Ceramic Society

107

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Section: Introductionmentioning

confidence: 99%

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Cabioc’h¹,

Eklund²,

Mauchamp³

et al. 2013

Journal of the European Ceramic Society

107

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Section: Microstructurementioning

confidence: 99%

“…2). The ternary phase Ti 3 SiC 2 possesses many excellent properties, such as good oxidation resistance, low density, high elastic modulus and strength, high chemical stability, etc., 30) and therefore, it can also serve as reinforcement in the local reinforcing region.Compared with Figs. 3(a) and 3(b), it can be seen that the Ti 5 Si 3 particulate size is decreased obviously with the Fe content increasing from 10 to 30 wt% in the preforms.…”

mentioning

confidence: 99%

In Situ Synthesis of Ti5Si3 Intermetallic Particulate Locally Reinforced Medium Carbon Steel-matrix Composite via the SHS Reaction of Fe–Ti–Si System during Casting

Wang

Guan

et al. 2007

ISIJ Int.

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The in situ Ti 5 Si 3 intermetallic particulate locally reinforced steel matrix composites are successfully fabricated by the self-propagating high-temperature synthesis (SHS) reaction of Fe-Ti-Si system during casting, and the microstructures of the composites reveal a relatively uniform distribution of mango-like Ti 5 Si 3 particulates in the local reinforcing regions. XRD results reveal that in addition to a-Fe and Ti 5 Si 3 phases, the transient Fe 2 Ti is also present in the local reinforcing region of the composites. Furthermore, some Ti 3 SiC 2 particulates are formed and distribute in the limited region nearby the interface between the local reinforcing region and steel matrix. With Fe content increasing from 10 to 30 wt% in the preforms, the Ti 5 Si 3 particulate size is decreased obviously in the local reinforcing region; furthermore, the presence of significant porosity can be detected in the composite synthesized by the 10 wt% Fe-Ti-Si system; on the contrary, only a minimal porosity can be found in that synthesized by 30 wt% Fe in Fe-Ti-Si system. The macro-and micro-hardness as well as the wear resistance of the local reinforcing region are obviously higher than those of the unreinforced medium steel. Improvements in hardness and wear resistance of the composite are mainly attributed to the presence of high volume fraction of hard intermetallic Ti 5 Si 3 particulates.KEY WORDS: in situ; intermetallic; locally reinforced; steel matrix composite; SHS. Experimental ProcedureIn this study, the starting materials were made of commercial powders of 10, 20, 30, 40 and 50 wt% Fe (99.0% purity, ϳ10 mm), Ti (99.5 % purity, ϳ38 mm), and Si (99.5 % purity, ϳ15 mm), respectively. Titanium and silicon powders were used in a ratio corresponding to that of stoichiometric Ti 5 Si 3 . Powder blends with different starting compositions were dry-mixed sufficiently by a ball milling for 6 h in a cylindrical stainless steel jar containing GCr15 bearing steel balls with a ball to powder weight ratio of about 5 : 1 by mechanical rotation at 40 rpm, and then were cold-isostatically pressed into cylindrical preforms (about 20 mm diameter and 10 mm length) by using a stainless steel die with two plungers. The green preforms were pressed uniaxially at pressure ranging from 88-92 MPa to obtain relative densities of 63Ϯ2% theoretical density. Then the preforms were placed and fixed on the side of the sand mold, respectively, as schematically illustrated in Fig. 2 in Ref. 11). Subsequently, the medium carbon steel melt, which composition is measured by an ARL4460 Metals Analyzer and shown in Table 1, prepared by non-oxidation process in a 5 kg medium-frequency induction furnace with a temperature of about 1 600°C was poured into the mold to ignite the SHS reaction of the preforms. After solidification and cooling, composite castings were removed and sectioned in the side position.Vickers microhardness values of the matrix and local reinforcing region in the samples were tested under a load of 50 g with an indentarion time of 10...

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“…Еще одним из возможных путей упрочнения титанокремнистого карбида Ti 3 SiC 2 является его высокотемпературная химическая об-работка отдельным (самостоятельным) химическим элементом, на-пример, углеродом (графитом), кремнием в твердом или жидком виде, жидким алюминием [1, 2,32]. Такой способ упрочнения обу-словлен тем, что в результате химического взаимодействия Ti 3 SiC 2 с отдельным элементом происходит частичный (или полный) распад этого соединения в поверхностных слоях материала с образованием более прочных карбида титана TiC или силикокарбида титана типа Ti(C x Si y ) [1,2].…”

Section: обоснование возможности решения проблемы высокотемпера-турныunclassified

Strength and Plasticity of the Sintered Materials on the Base of a Titanium Nanolaminate Ti$_{3}$SiC$_{2}$

2006

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На примере одного из наиболее изученных тройных соединений нового класса материалов наноламинатов, -титанокремнистого карбида Ti 3 SiC 2 , изготовленного методом реакционного спекания порошковой смеси элементов и двойных соединений, -выполнены системный анализ и обобщение влияния изученных структурных и фазовых изменений, происходящих в этом материале при различных видах обработки, на за-кономерности, особенности и механизмы процессов деформации, упроч-нения и разрушения в интервале температур 20-1300С. Обсуждены воз-можности повышения характеристик пластичности, прочности и разру-шения титанокремнистого карбида Ti 3 SiC 2 в пористом состоянии по срав-нению с компактным. Показано, что снижение прочности пористых ма-териалов может быть в значительной мере компенсировано, а в ряде слу-чаев превышено путем использования ряда факторов. Таковыми являют-ся: измельчение зеренной структуры, высокотемпературная термомеха-ническая обработка, создание двухфазного in-situ композита Ti 3 SiC 2 /TiC, азотирование высокопористого материала. Разработаны физические ос-новы одновременного повышения характеристик низкотемпературной пластичности, высокотемпературной прочности и сопротивления разру-шению материала в компактном и пористом состояниях.На прикладі однієї з найбільш вивчених потрійних сполук нової кляси ма-теріялів нанолямінатів, -титанокремністого карбіду Ti 3 SiC 2 , виготовле-ного методою реакційного спікання порошкової суміші елементів і подвій-них сполук, -виконано системну аналізу і узагальнення впливу вивчених структурних і фазових змін, що відбуваються в цьому матеріялі при ріж-них видах обробки, на закономірності, особливості і механізми процесів деформації, зміцнення й руйнування в інтервалі температур 20-1300С. Визначено можливості підвищення характеристик пластичности, міцности й руйнування титанокремністого карбіду Ti 3 SiC 2 у пористому стані в порів-нянні з компактним. Показано, що зниження міцности пористих матерія-лів може бути в значній мірі компенсовано, а в ряді випадків перевищено Успехи физ. мет. / Usp. Fiz. Met. 2006, т. 7, сс. 243-281 Îòòèñêè äîñòóïíû íåïîñðåäñòâåííî îò èçäàòåëÿ Ôîòîêîïèðîâàíèå ðàçðåøåíî òîëüêî â ñîîòâåòñòâèè ñ ëèöåíçèåé 2006 ÈÌÔ (Èíñòèòóò ìåòàëëîôèçèêè èì. Ã. Â. Êóðäþìîâà ÍÀÍ Óêðàèíû) Íàïå÷àòàíî â Óêðàèíå.

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Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution

Cited by 120 publications

References 25 publications

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

In Situ Synthesis of Ti5Si3 Intermetallic Particulate Locally Reinforced Medium Carbon Steel-matrix Composite via the SHS Reaction of Fe–Ti–Si System during Casting

Strength and Plasticity of the Sintered Materials on the Base of a Titanium Nanolaminate Ti$_{3}$SiC$_{2}$

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