First-principles study of the ideal shear strengths and stacking fault energies of face-centered cubic Al3Ti

Tang, Pingying; Huang, Guohua; Huang, Jinli; Ma, Li; Fan, Touwen

doi:10.1016/j.commatsci.2020.109596

Cited by 14 publications

(1 citation statement)

References 37 publications

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“…On the opposite, low strain rate specimens cannot cross the δ phase directly. Therefore, shearing direction will change to the pass with the lowest energy cost [ 55 , 56 , 57 , 58 ].…”

Section: Resultsmentioning

confidence: 99%

Comparison in Deformation Behavior, Microstructure, and Failure Mechanism of Nickel Base Alloy 625 under Two Strain Rates

Wang

Cai

et al. 2021

Materials

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Tensile deformation behavior and microstructure of nickel-base superalloy Inconel 625 are investigated under different strain rates of 5 × 10−4 s−1 and 5 × 10−5 s−1. According to the experimental results, yield strength and ultimate tensile strength of the alloy increase with the increase in strain rate in room temperature. Microstructure results indicate that the size of dimples is smaller in the tensile fracture surface at low strain rate than the high strain rate, and the number of dimples is also related to the strain rates and twins appear earlier in the specimens with higher strain rates. Apart from Hollomon and Ludwik functions, a new formula considering the variation trend of strength in different deformation stages is deduced and introduced, which fit closer to the tensile curves of the 625 alloy used in the present work at both strain rates. Furthermore, the Schmid factors of tensile samples under two strain rates are calculated and discussed. In the end, typical work hardening behavior resulting from the dislocations slip behavior under different strain rates is observed, and a shearing phenomenon of slip lines cross through the δ precipitates due to the movement of dislocations is also be note.

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“…On the opposite, low strain rate specimens cannot cross the δ phase directly. Therefore, shearing direction will change to the pass with the lowest energy cost [ 55 , 56 , 57 , 58 ].…”

Section: Resultsmentioning

confidence: 99%

Comparison in Deformation Behavior, Microstructure, and Failure Mechanism of Nickel Base Alloy 625 under Two Strain Rates

Wang

Cai

et al. 2021

Materials

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Pressure‐ and Temperature‐Coupling‐Induced Structural Transition and Thermal Properties of Al₃TM (TM = Ti, Zr, Hf)

Ma,

Huang,

Xie

et al. 2025

Physica Status Solidi (b)

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Pressure–temperature‐coupling‐induced structural transition and thermal properties of Al3TM (TM = Ti, Zr, Hf) have been studied using the first‐principles calculations combined with the quasi‐harmonic approximation. The enthalpy indicates that Al3TM transitions to L12 structure at a specific pressure threshold ( for Al3Ti, for Al3Zr, and for Al3Hf). The fundamental thermodynamic parameters, including thermal equilibrium volume , thermal expansion coefficient α, and heat capacity , do not abruptly change due to the structural transition. Whereas many elastic properties, including elastic constants, shear modulus, and Young's modulus, exhibit abrupt variations. Such as, at structural transition critical boundaries, , , and for Al3Ti. shows that Al3TM is difficult to oppose hydrostatic pressure, and α indicates that Al3TM maintains strong stability under high pressure and its volume expansion is expected to be linear at high temperature. Furthermore, shows that the absorbing capacity or heat‐sinking capacity of Al3TM is strong at the low pressure and high temperature. The elastic properties exhibit an increasing trend with increasing pressure, whereas they exhibit a more or less decreasing trend with increasing temperature. Both numerical indicators and 3D images of the elastic anisotropy are derived, revealing that Al3TM possesses a high degree of anisotropy.

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A new Pr0.25Nd0.25Sr0.5MnO3-δ cathode for proton-conducting solid oxide fuel cells

Yin

et al. 2022

Ceramics International

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First-principles study of the ideal shear strengths and stacking fault energies of face-centered cubic Al3Ti

Cited by 14 publications

References 37 publications

Comparison in Deformation Behavior, Microstructure, and Failure Mechanism of Nickel Base Alloy 625 under Two Strain Rates

Comparison in Deformation Behavior, Microstructure, and Failure Mechanism of Nickel Base Alloy 625 under Two Strain Rates

Pressure‐ and Temperature‐Coupling‐Induced Structural Transition and Thermal Properties of Al₃TM (TM = Ti, Zr, Hf)

A new Pr0.25Nd0.25Sr0.5MnO3-δ cathode for proton-conducting solid oxide fuel cells

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First-principles study of the ideal shear strengths and stacking fault energies of face-centered cubic Al3Ti

Cited by 14 publications

References 37 publications

Comparison in Deformation Behavior, Microstructure, and Failure Mechanism of Nickel Base Alloy 625 under Two Strain Rates

Comparison in Deformation Behavior, Microstructure, and Failure Mechanism of Nickel Base Alloy 625 under Two Strain Rates

Pressure‐ and Temperature‐Coupling‐Induced Structural Transition and Thermal Properties of Al3TM (TM = Ti, Zr, Hf)

A new Pr0.25Nd0.25Sr0.5MnO3-δ cathode for proton-conducting solid oxide fuel cells

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Product

Resources

About

Pressure‐ and Temperature‐Coupling‐Induced Structural Transition and Thermal Properties of Al₃TM (TM = Ti, Zr, Hf)