Determination of solubility limits of refractory elements in TCP phases of the Ni-Mo-Cr ternary system using diffusion multiples

Popp, Robert; Haas, Sebastian; Scherm, Florian; Redermeier, Alice; Povoden-Karadeniz, Erwin; Göhler, T.; Glatzel, Uwe

doi:10.1016/j.jallcom.2019.01.329

Cited by 15 publications

(1 citation statement)

References 26 publications

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“…Many systems have demonstrated the ability of the diffusion-multiple approach to be used as a tool for determining very complex phase diagrams, and this has been demonstrated for many different systems. In order to compare the phase diagrams of simple and very complex ternary systems, diffusion multiples have been used in place of equilibrated alloys to determine the phase diagrams [17]. In light of the results of this experiment, it can be concluded that the phase diagrams which have been determined from diffusion multiples are of very high accuracy [18].…”

Section: Diffusion-multiple Approachmentioning

confidence: 99%

Titanium-Based Alloys with High-Performance: Design and Development

Krishna¹

2023

Titanium Alloys - Recent Progress in Design, Processing, Characterization, and Applications

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In recent years, titanium alloys with better properties have become increasingly popular. Their composition must be precisely designed to meet these demands. Screening alloy properties such as corrosion resistance, specific strength, properties to service at high temperatures, and microstructural stability requires a fair amount of effort and money to accomplish. By taking titanium-based alloys as an example, this chapter reviews the use of high-performance alloy design and development approach for industrial applications, in order to simplify the selection of titanium alloy compositions. The different high-throughput alloy design methods have been used by researchers to calculate diffusion coefficients of multiple elements using a thermodynamic database of atomic mobility. A composition with comprehensively optimal properties is selected by applying a rigorous screening criterion and then evaluating it in an experimental setting in order to come up with an optimal composition. Comparing this strategy with the data-driven material design methods that have been developed in recent times, few methods are more accurate and efficient, mainly because the diffusion pairs, the atomic mobility databases, and the refined physical models work together to make this strategy the most accurate and efficient. This approach could help develop high-performance titanium alloys, to overcome challenges of developing titanium alloys.

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Section: Diffusion-multiple Approachmentioning

confidence: 99%

Titanium-Based Alloys with High-Performance: Design and Development

Krishna¹

2023

Titanium Alloys - Recent Progress in Design, Processing, Characterization, and Applications

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Effects of Re on microstructure evolution of nickel-based single crystal superalloys

2020

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Influence of the W and Ta content on the High-Temperature Oxidation Resistance of Multinary Co/Ni-Based Superalloys at 1050 °C and 1150 °C

Hagen,

Haussmann,

Wahlmann

et al. 2023

High Temperature Corrosion of mater.

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Outstanding inherent environmental resistance is a precondition for the use of superalloys in high-temperature applications. Besides high Al and Cr levels, also refractory metal concentrations (W and Ta) are reported to affect protective scale formation, as these elements are expected to affect the chemical activity and also the transport of protective scale formers within the alloy. In this study, we elucidate the high-temperature oxidation behavior of 3 Co-based (Co/Ni ratio: 1.4) and 3 Ni-based (Co/Ni ratio: 0.7) superalloys differing in W and Ta levels. Time-resolved thermogravimetric analysis (TGA) in synthetic air at 1050 °C and 1150 °C for 100 h, scanning electron microscopy analysis (SEM), thermodynamic calculations using the CALPHAD software Thermo-Calc, and diffusion couple experiments were conducted to assess the impact of the Co/Ni ratio and the refractory metal content on the oxidation performance. The results indicate that a low W content (3 vs. 5 at.%) and a high Ta content (2.1 vs. 1.5 at.%) beneficially affect the oxidation resistance, as alumina scale formation is facilitated.

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Determination of solubility limits of refractory elements in TCP phases of the Ni-Mo-Cr ternary system using diffusion multiples

Cited by 15 publications

References 26 publications

Titanium-Based Alloys with High-Performance: Design and Development

Titanium-Based Alloys with High-Performance: Design and Development

Effects of Re on microstructure evolution of nickel-based single crystal superalloys

Influence of the W and Ta content on the High-Temperature Oxidation Resistance of Multinary Co/Ni-Based Superalloys at 1050 °C and 1150 °C

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