First-principles and CALPHAD-type study of the Ir-Mo and Ir-W systems

Huang, You‐Ren; Wu, Bo; Li, F.; Chen, L.-L.; Deng, Zhen; Chang, Keke

doi:10.2298/jmmb190211001h

Cited by 7 publications

(4 citation statements)

References 41 publications

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“…The XRD peaks of the W 0.25 Ir 0.75 and W 0.5 Ir 0.5 intermetallic phases disappear as the temperature increases (1400 °C and above). This result is not surprising because the W 0.33 Ir 0.67 phase is thermodynamically the most stable [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Evolution of the Microstructure and Phase Composition of the Products Formed in the Reaction between Iridium and W2B

et al. 2022

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In the present study, we perform a systematic examination of the products formed by mixing and heating of tungsten boride and iridium powders at different ratios in a broad temperature range using qualitative and quantitative X-ray analysis and time-of-flight neutron diffraction (TOF-ND), in combination with scanning electron microscopy/energy-dispersive spectroscopy (SEM/EDS) performed at different accelerating voltages. The well-known and unknown ternary W–Ir–B phases were detected. The Vickers microhardness value for the new ternary W2Ir5B2 boride was measured. Based on these findings, the ternary W2Ir5B2 boride can be considered hard.

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Section: Resultsmentioning

confidence: 99%

Evolution of the Microstructure and Phase Composition of the Products Formed in the Reaction between Iridium and W2B

et al. 2022

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“…Since the Gibbs energy of lithium in the Tetragonal_A6 structure is not presented in the SGTE Unary [23] database, the ab-initio [13] calculation was applied in this work. A very similar approach was successfully applied in calculation of Ir -Mo and Ir-W done by Huang et al [32] The thermodynamic parameters obtained in this work are gathered in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic modelling of the binary indium-lithium system, a promising li-ion battery material

Gierlotka

Gąsior

Dębski

et al. 2022

J min metall B Metall

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The binary In - Li system is a promising Li-ion battery anode material as well as a part of the important ternary Ge - In - Li system. The thermodynamic descriptions of metallic systems are widely used to retrieve information necessary for alloy applications. In this work, a thermodynamic model of a binary indium - lithium system prepared by the Calphad approach is proposed. The liquid phase was described by an associate model, and the solid phases determined by the ab-initio calculation were included in thermodynamic modeling. The obtained set of self-consistent thermodynamic parameters well reproduces the available experimental data and enables further calculations of multi-component systems. A good agreement between the calculations and the available experimental data was found. The proposed model can be used for further descriptions of ternary systems.

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“…Moreover, it has been noted that retained austenite can notably enhance the plastic deformation capacity prior to crack initiation during cryogenic impact processes, thereby increasing the energy required for crack initiation. [ 46 ] The gradual decrease in the volume fraction of retained austenite in the T‐630, T‐650, and T‐670 specimens after impact suggests a diminishing ability of the specimens to hinder the cracks propagation. Consequently, the impact toughness at cryogenic temperatures gradually deteriorates.…”

Section: Discussionmentioning

confidence: 99%

Study on Microstructure and Mechanical Properties of Marine 10Ni5CrMoV Steel during Tempering

Zou,

Dong,

Jiang

et al. 2024

steel research int.

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The microstructure and mechanical properties of marine 10Ni5CrMoV steel are systematically investigated at tempering temperatures ranging from 630 to 670 °C. With increasing tempering temperature, several key parameters exhibit notable changes: the volume fraction of reversed austenite decreases from 17.36% to 13.39%. The equivalent grain size increases from 0.91 to 1.09 μm. The equivalent diameter of precipitates increases from 59 to 79 nm. The dislocation density decreases from 0.82 × 10−15 to 0.51 × 10−15 m−2. As the tempering temperature increases, the pinning effect of precipitates on dislocations and martensite laths decreases. This leads to reductions in both dislocation strengthening and precipitation strengthening mechanisms. Consequently, the yield strength of the specimen decreases from 876 to 683 MPa. The increase in the ductile‐brittle transition temperature of the specimens from −116 to −95 °C can be attributed to several factors. First, the increase in precipitate size reduces the critical nucleation stress of cleavage cracks and promotes the nucleation of such cracks. Additionally, the decrease in dislocation density mobility leads to a reduction in the dimple nucleation rate, thereby diminishing the role of dimples in hindering crack propagation.

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First-principles and CALPHAD-type study of the Ir-Mo and Ir-W systems

Cited by 7 publications

References 41 publications

Evolution of the Microstructure and Phase Composition of the Products Formed in the Reaction between Iridium and W2B

Evolution of the Microstructure and Phase Composition of the Products Formed in the Reaction between Iridium and W2B

Thermodynamic modelling of the binary indium-lithium system, a promising li-ion battery material

Study on Microstructure and Mechanical Properties of Marine 10Ni5CrMoV Steel during Tempering

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