Isothermal section of Al–Ti–Zr ternary system at 1273K

Yang, Fan; Xiao, Feng; Liu, S.G.; Dong, Song; Huang, Lei; Chen, Qing; Cai, Gemei; Liu, H.S.; Jin, Zhanpeng

doi:10.1016/j.jallcom.2013.09.082

Cited by 19 publications

(35 citation statements)

References 25 publications

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“…For the isothermal section at 1073 K, the three-phase regions of TiAl + Ti Figure 6. Calculated isothermal section of Ti-Al-Zr system at (a)1073 K, compared with the experimental data [51] and (b) 1273 K, compared with the experimental data [52] Ti-rich corner of the Ti-Al-Zr system at 1273, 1473, and 1573 K are consistent with the experimental values as well. The Ti 3 Al-Ti + 5 wt.% Zr vertical section of the Ti-Al-Zr system is in good agreement with experiments.…”

Section: Discussionsupporting

confidence: 57%

“…The experimental data of phase equilibria at 1073 K [52], 1273 K [51], the Ti-rich corner at 1273, 1473, and 1573 K [50], as well as a vertical section of the Ti 3 Al-Ti + 5 wt.% Zr [49] were used to optimize this system. The parameters optimized in the present work were listed in table 3.…”

Section: Resultsmentioning

confidence: 99%

“…The composition of each phase was obtained by EPMA (Standard deviations of the measured concentration is ± 0.6 at.%), and thus the phase boundary was determined. The works of Yang et al [51] were assessed to be more reliable than others [52,53] due to the intuitive and accurate experimental results, higher emphasis would be placed on these data [51] in the present optimization. More recently, Lü et al [52] determined the phase relationships at 1073 K (temperature error is within ± 5 °C) using equilibrated alloys and diffusion couple approach.…”

Section: Ti-al-zrmentioning

confidence: 93%

“…Kainuma et al [50] measured the phase equilibria in the Ti-rich corner of the Ti-Al-Zr system at 1273, 1473, and 1573 K by Electron Probe Micro Analysis (EPMA). Yang et al [51] investigated the phase equilibria at 1273 K through alloy sampling combined with EPMA and XRD. The BSE images and XRD results intuitively reflected the phase regions.…”

Section: Ti-al-zrmentioning

confidence: 99%

“…Therefore, we did not accept their data [53] in the present work. According to the reported data [50][51][52][53], no ternary compound exist in the ternary system. Table 2 summarizes the experimental data of the Ti-Al-Zr system accepted in the present optimization.…”

Section: Ti-al-zrmentioning

confidence: 99%

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Ab initio and CALPHAD-type thermodynamic investigation of the Ti-Al-Zr system

Deng

Zhao

Huang

et al. 2019

J min metall B Metall

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Ti-Al based alloys have been widely used in the aeronautics and aerospace. Adding alloying element Zr can significantly improve their high-temperature endurance and corrosion resistance. To investigate the influence of the addition of element Zr on the properties of the Ti-Al system, ab initio calculations and the CALPHAD (CALculation of PHAse Diagrams) method were used to evaluate the Ti-Al-Zr ternary system. Ab initio calculations were carried out to calculate the formation enthalpies of intermetallic compounds and end-members. CALPHAD approach was employed to optimize the thermodynamic parameters based on experiments. The experimental data of phase equilibria at 1073, 1273, 1473, and 1573 K, as well as a vertical section of the Ti 3 Al-Ti + 5 wt.% Zr were used to assess this system. The thermodynamic parameters of the binary Ti-Al, Al-Zr and Ti-Zr systems were acquired from recent assessments, and the ternary ones were evaluated in the present work. The Ti-Al-Zr ternary dataset has been established and the calculated results are in close agreement with the experimental data on both thermodynamics and phase equilibria.

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Section: Discussionsupporting

confidence: 57%

Section: Resultsmentioning

confidence: 99%

Section: Ti-al-zrmentioning

confidence: 93%

Section: Ti-al-zrmentioning

confidence: 99%

Section: Ti-al-zrmentioning

confidence: 99%

See 3 more Smart Citations

Ab initio and CALPHAD-type thermodynamic investigation of the Ti-Al-Zr system

Deng

Zhao

Huang

et al. 2019

J min metall B Metall

View full text Add to dashboard Cite

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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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