Effect of TiH2 in the preparation of MMC Ti based with TiC reinforcement

Peillon, Nathalie; Fruhauf, Jean-Baptiste; Gourdet, Sophie; Feraille, J.; Saunier, Sébastien; Desrayaud, Christophe

doi:10.1016/j.jallcom.2014.09.014

Cited by 20 publications

(10 citation statements)

References 14 publications

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“…The amount of hydrogen retained on the samples TiH2-5Fe, TiH2-12Nb, and TiH2-5Fe25Nb could be attributed to a slight layer of oxide formed on particle surface, which interferes with complete degasification. The formation of this oxide layer was highly likely due to the inherent nature of Ti and it has been previously observed in literature [10,[19][20][21]. According to results, dehydrogenation occurs faster under vacuum than in argon flow; this is due to the fact that hydrogen released during the decomposition process is continuously removed when the samples are under vacuum.…”

Section: Comparison Of Mass Loss During the Dehydrogenation Process Under Different Environmentssupporting

confidence: 56%

“…Metals 2020, 10, x FOR PEER REVIEW 6 of 19 transformation occurs, which means that complete hydrogen elimination is produced in the last stage, but this stage is very dependent on the surface features. It has been reported that the formation of a slight layer of oxide on the particle surface could hinder complete dehydrogenation [10,[19][20][21].…”

Section: Effect Of Alloying Elements On Thermal Decomposition Of Titanium Hydridementioning

confidence: 99%

“…All TiH 2 applications depend on the decomposition of TiH 2 : How hydrogen is released when it is subjected to a heat treatment. The process of TiH 2 decomposition has been widely researched through simultaneous thermal analysis under different atmospheres combined with structural analysis and in-situ methods [17][18][19][20][21][22][23]. Although there are discrepancies about the sequence of the phases formed during TiH 2 decomposition process, researchers agree that this process is strongly dependent on samples' features, like the purity of the powder, particle size, and surface contamination, which can act as a barrier for the release of hydrogen.…”

Section: Introductionmentioning

confidence: 99%

“…Although there are discrepancies about the sequence of the phases formed during TiH 2 decomposition process, researchers agree that this process is strongly dependent on samples' features, like the purity of the powder, particle size, and surface contamination, which can act as a barrier for the release of hydrogen. Besides, the heating rate and atmosphere employed during heat treatment are important aspects to be taken into account in order to promote the decomposition [19,21,24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been developed on thermal behavior of TiH 2 since its decomposition temperature is an essential aspect to take into account when it is used in an alloy system as a foaming/blowing agent [18,[26][27][28]. Sintering of Ti alloys employing TiH 2 powders has also been extensively studied [19,25,[29][30][31]. However, there are few studies about the effect of alloying elements on the TiH 2 decomposition.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Chirico

Tsipas

Wilczynski

et al. 2020

Metals

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The use of titanium hydride as a raw material has been an attractive alternative for the production of titanium components produced by powder metallurgy, due to increased densification of Ti compacts, greater control of contamination and cost reduction of the raw materials. However, a significant amount of hydrogen that often remains on the samples could generate degradation of the mechanical properties. Therefore, understanding decomposition mechanisms is essential to promote the components’ long life. Several studies on titanium hydride (TiH2) decomposition have been developed; nevertheless, few studies focus on the effect of the alloying elements on the dehydrogenation process. In this work, the effects of the addition of different amounts of Fe (5 and 7 wt. %) and Nb (12, 25, and 40 wt. %) as alloying elements were evaluated in detail. Results suggest that α→β transformation of Ti occurs below 800 °C; β phase can be observed at lower temperature than the expected according to the phase diagram. It was found that β phase transformation could take place during the intermediate stage of dehydrogenation. A mechanism was proposed for the effect of allying elements on the dehydrogenation process.

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Section: Comparison Of Mass Loss During the Dehydrogenation Process Under Different Environmentssupporting

confidence: 56%

Section: Effect Of Alloying Elements On Thermal Decomposition Of Titanium Hydridementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Chirico

Tsipas

Wilczynski

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

Metal Powder Preparation Processes

2023

Metal Powder–Based Additive Manufacturing

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Recent Advances in the Design and Fabrication of Strong and Ductile (Tensile) Titanium Metal Matrix Composites

et al. 2019

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Titanium metal matrix composites (TiMMCs) offer much improved strength, elastic modulus, and wear resistance at both room and elevated temperatures but often at the expense of tensile ductility, which excludes them from most key engineering applications. Recent advances show that this long-standing strength-ductility dilemma can be controlled to a large extent by adopting novel design concepts based on powder metallurgy (PM). These include: 1) reinforcing the Ti matrix with a three-dimensional (3D) network-like architecture of TiB whiskers or nanowires; 2) the use of nanostructured carbon precursors (nanotubes, fibers, and graphene) to enable in situ formation of TiC reinforcements; and 3) the exploitation of "ductility-detrimental" interstitial elements (O, N, H) for strengthening. On a laboratory scale, the fabricated TiMMCs all exhibit an excellent combination of tensile strength and elongation, comparable to, or even better than, solution-treated and aged (STA) wrought Ti-6Al-4V. The mechanisms behind these novel developments are analyzed. New insights into the design and fabrication of stronger and more ductile (tensile) TiMMCs are offered.

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Effect of TiH2 in the preparation of MMC Ti based with TiC reinforcement

Cited by 20 publications

References 14 publications

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Metal Powder Preparation Processes

Recent Advances in the Design and Fabrication of Strong and Ductile (Tensile) Titanium Metal Matrix Composites

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