Laves phase in Ti-42Al-10Mn alloy

Chen, Z.; Jones, I.P.; Small, Colin

doi:10.1016/1359-6462(96)00085-1

Cited by 26 publications

(5 citation statements)

References 7 publications

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“…Figs. 4e6 show the comparison between the experimental data [14,15] and our calculated results on the isothermal sections at 1273 K, 1473 K and 1573 K, respectively. It can be found that there is a good agreement between the calculated and measured tie-lines and tie-triangles for the most of the phase equilibria among aTi (hcp), bTi(bcc) and gTiAl.…”

Section: Pointsmentioning

confidence: 96%

“…Chen et al studied the arc-melted and annealed samples by SEM, EDS and EPMA [15]. An alloy composition is Tie42Ale10Mn (at%), and the annealing temperatures of 1273 K and 1073 K were used.…”

Section: The Experimental Data Of Tiealemn At Ti-rich Cornermentioning

confidence: 99%

“…Temperature (K) Chemical composition (at%) Phase constitute in experimental [12,15] Phase constitute in this work 6. The calculated isothermal section of the TieAleMn system at 1573 K along with the experimental data measured by Kainuma et al [14].…”

Section: Pointsmentioning

confidence: 99%

“…The calculated isothermal section of the TieAleMn system at 1273 K along with the experimental data measured by Kainuma et al and Chen et al[14,15].element Al, Mn or Ti, respectively, which are relative to the enthalpies of pure fcc_a1 for Al, bcc_a12 for Mn, hcp_a3 for Ti in their SER state, L 0 *:Mn;Ti and L 0 Mn;Ti:* etc represent the ith interaction parameters between the elements Mn and Ti. L 0 Al;Mn:* , L 0 *:Al;Mn:* and L 0 *:*:Al;Mn etc represent the ith interaction parameters between the elements Al and Mn.…”

mentioning

confidence: 99%

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Calculation of phase equilibria in Ti–Al–Mn ternary system involving a new ternary intermetallic compound

Chen

Qiu

et al. 2010

Intermetallics

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Section: Pointsmentioning

confidence: 96%

Section: The Experimental Data Of Tiealemn At Ti-rich Cornermentioning

confidence: 99%

Section: Pointsmentioning

confidence: 99%

mentioning

confidence: 99%

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Calculation of phase equilibria in Ti–Al–Mn ternary system involving a new ternary intermetallic compound

Chen

Qiu

et al. 2010

Intermetallics

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“…[18,27,33] While a β þ γ phase field region was reported at intermediate temperatures, e.g., 1100 °C, for the Ti-42Al-5Mn (at%) alloy, [18,33,189] the α 2 , γ and, depending on the Mn content, also the intermetallic Ti(Al,Mn) 2 Laves phase are stable at lower temperatures in the composition range relevant to γ-TiAl based alloys, as shown in Figure 10a. [189][190][191][192] In the case of the Ti-42Al-5Mn (at%) alloy, the β/β o phase is stabilized from about 900 °C up to the liquidus temperature. [189,193] This circumstance permits conventional hot forging, since the presence of the cubic β phase provides enough independent slip systems for dislocations in the same manner as in the TNM alloy system.…”

Section: Manganesementioning

confidence: 99%

Alloying Elements in Intermetallic γ‐TiAl Based Alloys – A Review on Their Influence on Phase Equilibria and Phase Transformations

et al. 2023

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Intermetallic γ–TiAl based alloys are innovative structural materials dedicated to applications in the automotive and aeronautic industry. Especially their low density, high specific yield strength and excellent resistance against creep and oxidation make them a suitable choice for structural high‐temperature components in combustion engines. However, further improvement of their properties and processability is required to conquer new application areas and facilitate cost‐effective production. While the incorporation of additional alloying elements is a promising possibility, their effects on the phase transformations and phase equilibria need to be considered rigorously. In this context, this review provides a detailed survey of the research work on the influence of technically important alloying elements on the Ti–Al phase diagram. First, an introduction to the fundamentals of the phase transformations in γ‐TiAl based alloys and the consequences of changed cooling conditions, relevant for example to the latest developments within the field of processing, is given. Afterwards, the alloying elements, categorized with respect to their stabilization effect, are discussed and their particularities highlighted. Topics covered include established ternary phase diagrams and isoplethal sections, the stabilization of additional phases as well as the influence of alloying elements on the microstructure of modern engineering intermetallic γ‐TiAl based alloys.This article is protected by copyright. All rights reserved.

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Advanced TiAl Based Alloys: From Polycrystals to Polysynthetic Twinned Single Crystals

Zhao,

Chu,

et al. 2024

Adv Funct Materials

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TiAl alloys stand out for low density, high specific strength, and excellent creep resistance, making them promising for high‐temperature aerospace applications. However, traditional TiAl alloys suffer from poor room‐temperature ductility and low service temperature that limit their critical applications in aerospace structures. To address these issues, research has focused on improving the mechanical properties of TiAl alloys through alloying and microstructural design. After decades of effort, the evolution of TiAl alloys has progressed from polycrystalline TiAl to high‐performance polysynthetic twinned (PST) TiAl single crystals. The well‐aligned PST TiAl single crystals enriched with Nb enable an excellent combination of strength and ductility, significantly outperforming polycrystalline TiAl alloys. This review summarizes recent progress on TiAl alloys, particularly focusing on newly developed PST single crystals. First, the development history of TiAl alloys is overviewed; then their crystal structures, phase diagrams, and typical microstructures are systematically discussed, along with the design strategies based on alloying elements. Additionally, recent advances in TiAl columnar crystals, which are between polycrystals and single crystals, are reviewed. Subsequently, the mechanical anisotropy, preparation methods, and superior mechanical properties of the PST single crystals are analyzed in detail. The final remark highlights the future development and application prospects of TiAl alloys.

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Laves phase in Ti-42Al-10Mn alloy

Cited by 26 publications

References 7 publications

Calculation of phase equilibria in Ti–Al–Mn ternary system involving a new ternary intermetallic compound

Calculation of phase equilibria in Ti–Al–Mn ternary system involving a new ternary intermetallic compound

Alloying Elements in Intermetallic γ‐TiAl Based Alloys – A Review on Their Influence on Phase Equilibria and Phase Transformations

Advanced TiAl Based Alloys: From Polycrystals to Polysynthetic Twinned Single Crystals

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