Enhancing low thermal expansion behavior and strength via induced Zr-rich intermetallic phase in Fe-36Ni Invar alloy

Wang, Qi; Dong, Yanwu; Huang, Jun

doi:10.1016/j.matdes.2023.111644

Cited by 23 publications

(3 citation statements)

References 67 publications

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“…The microstructure‐related parameters are necessary to explain the variation of mechanical properties, and the slip of the crystal is achieved by dislocation motion. To explore the increment via dislocation strengthening, the dislocation densities at Zn alloys with different Mg contents are considered and given by: [ 86 ]

\Delta \left(\sigma\right)_{\text{DS}} = M \alpha G b \left(\rho\right)^{1 / 2}

where M (3.06) is the mean orientation factor, a (0.2) is a constant, G (43 GPa) is the shear modulus, and b (0.27 nm) is the magnitude of the Burgers vector for the face‐centered cubic (FCC) Zn matrix, [ 86 ] while ρ is the dislocation density which is determined by Williamson–Hall method and Scherrer equation. [ 87 ] The calculated values of

\Delta \left(\sigma\right)_{\text{DS}}

for HPS Zn– x Mg–0.2GNP are listed in Table 4.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, as for PS, the Mg 2 Zn 11 phase can effectively pin the dislocation migration by the Orowan mechanism. The incremental yield strength from PS can be calculated by using: [ 86 ]

\Delta \left(\sigma\right)_{\text{PS}} = \frac{k f^{1 / 2}}{d} \text{ln} \left(\right. \frac{d}{b} \left.\right)

where f and d are the volume fraction and the average diameter of the precipitates, respectively, and k is a constant with a value of 5.9 N m −1 for the FCC Zn matrix.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, as for PS, the Mg 2 Zn 11 phase can effectively pin the dislocation migration by the Orowan mechanism. The incremental yield strength from PS can be calculated by using: [86] Δσ…”

Section: Mechanical Properties Of Hps Compositesmentioning

confidence: 99%

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Mechanical Properties, Degradation Behavior, and Cytocompatibility of Zn–Mg–Graphene Nanoplatelets Composite for Orthopedic‐Implant Applications

Kabir,

Lin,

Munir

et al. 2023

Adv Eng Mater

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Zinc (Zn)‐based materials reveal inadequate mechanical properties as orthopedic biodegradable implantable materials, which limits their biomedical applications. Herein, Zn–xMg (magnesium) composites (x = 0.5, 1.0, 1.5, and 2.0 wt%) reinforced with 0.2 wt% graphene nanoplatelets (GNP) are obtained via powder metallurgy and hot‐pressing sintering. The addition of 0.5–2.0 wt% Mg into Zn–0.2 wt% GNP composite resulted in the formation of Mg2Zn11 and MgZn2 phases without any additional intermetallic carbide phases. The hot‐pressing sintered (HPS) Zn–0.5Mg–0.2GNP composite exhibits a compressive yield strength of 169 ± 18 MPa, an ultimate compressive strength of 270 ± 39 MPa, a compressive strain of 17 ± 6%, and a microhardness of 86 ± 2 HV. Electrochemical corrosion testing reveals that corrosion resistance of HPS Zn–xMg–0.2GNP composites decreases with increasing Mg content, while immersion tests in Hanks’ balanced salt solution for 30 d indicate that the degradation rate increases from 0.032 to 0.141 mm y−1 by increasing Mg content from 0 to 2.0 wt%. In vitro cytotoxicity assessments using SaOS2 human osteoblast cells show >90% viability following exposure over 5 d to 12.5% extract concentrations of all HPS composites. The HPS Zn–0.5Mg–0.2GNP composite exhibits the appropriate material properties for biodegradable bone‐implant applications.

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\Delta \left(\sigma\right)_{\text{DS}} = M \alpha G b \left(\rho\right)^{1 / 2}

\Delta \left(\sigma\right)_{\text{DS}}

for HPS Zn– x Mg–0.2GNP are listed in Table 4.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, as for PS, the Mg 2 Zn 11 phase can effectively pin the dislocation migration by the Orowan mechanism. The incremental yield strength from PS can be calculated by using: [ 86 ]

\Delta \left(\sigma\right)_{\text{PS}} = \frac{k f^{1 / 2}}{d} \text{ln} \left(\right. \frac{d}{b} \left.\right)

where f and d are the volume fraction and the average diameter of the precipitates, respectively, and k is a constant with a value of 5.9 N m −1 for the FCC Zn matrix.…”