Pinning effect of Y<sub>2</sub>O<sub>3</sub> network on copper grain growth during high temperature annealing

Huang, Fei; Wang, Hang; Yang, Bin; Liao, Tao; Wang, Zhaoyang

doi:10.1088/2053-1591/aac1e8

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…The results showed that the Y-rich oxides had irregular modifications on grain boundaries, and polygonal Y-rich oxides were dispersed in the copper matrix, so mechanical-property improvement of the alloy was attributed to the existence of enhanced yttrium-rich oxide particles [ 43 ]. Huang et al studied the effect of Y-nanoparticle content in the network on the thermal stability of ultra-fine copper grains [ 44 ]. Differences in the thermal expansion coefficients of Y and Cu may produce internal stress in the sintering process, leading to lattice distortion in the copper matrix.…”

Section: Interface Characteristicsmentioning

confidence: 99%

Research Progress in Interfacial Characteristics and Strengthening Mechanisms of Rare Earth Metal Oxide-Reinforced Copper Matrix Composites

Jiang

2022

Materials

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The existence of a small amount of rare earth metal oxides (REMOs) can greatly affect the structure and function of copper matrix composites owing to improvement of surface and interface properties between REMOs and metal matrix, and there are still some challenges concerning interfaces and complex interfacial reactions. This review summarizes the interfacial characteristics and strengthening mechanisms of REMO-reinforced copper matrix composites, including fabrication methods for solving rare earth metal oxide-dispersion problems and characterization of the microstructure and properties of REMO-reinforced copper matrix composites. In particular, the strengthening effects of various rare earth metal oxide-reinforced copper matrix composites are systematically summarized. The interface characteristics of composites from a thermodynamics standpoint and the strengthening mechanism are emphatically investigated and discussed in order to help unveil design principles and to provide reference for future research of REMO-reinforced copper matrix composites.

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Section: Interface Characteristicsmentioning

confidence: 99%

Research Progress in Interfacial Characteristics and Strengthening Mechanisms of Rare Earth Metal Oxide-Reinforced Copper Matrix Composites

Jiang

2022

Materials

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“…Increasing the strength and creep resistance of ODS steel at high temperature is mainly caused by the dispersion of the Ytria (Y 2 O 3 ) which functioned as a pinning to inhibit the dislocation movement [6]. Ytria is a rare the earth oxide which is widely used as a disperse oxide because it is non-toxic [7], has a high melting point value and the structural is stable at 2410 o C [8].…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS.

Silalahi

Bandriyana

Bayu

et al. 2020

jsmi

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EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS. A new method on the synthesis of ODS (Oxide Dispersion Strengthened) steel for advanced nuclear material was performed by ultrasonic treatment to improve the consolidation process. The raw material of Fe, Cr and Y2O3powder with the composition of Fe-15 wt% Cr, 0.5 wt% and Ytria (Y2O3) as disperzoid were processed by the powder metallurgy method with the main process of pre-alloying, iso-compaction and sintering process. The pre-alloying process was carried out by mixing the alloying elements using ultrasonically treatment at frquency of 20 kHz with variation of 40, 50 and 60 % amplitude. Iso-compaction process was done using the load of 800 psi to obtain a pellet-shaped sample, then continued by the sintering process for consolidation. The sintering process was done in two stages, 1-step sintering and 2-steps sintering, using the heating furnace by putting the sample in a quartz capsule to prevent oxidation attack. Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS), X-ray Diffraction (XRD), and Micro-hardness tests were carried out to analyze the microstructure and phase formation in relation to the consolidation process. The highest hardness occurred in the addition of treatment with an amplitude of 60% which produces a micro structure with the most fine grain. For 1-step sintering process, the highest hardness of 134.51 VHN obtained at 40 % amplitude. The hardness of the alloy depends on the size of the grain boundary associated with the difficulty of the dislocation movement.

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Deformation Behavior of La₂O₃‐Doped Copper during Equal Channel Angular Pressing

Kunčická,

Walek,

Kocich

2024

Adv Eng Mater

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Pure copper has a very low strength of not more than 20 MPa. Nevertheless, its mechanical properties can be enhanced by (micro)alloying, additions of strengthening particles/elements, or imparting structure modifications/grain refinement via (severe) shear strain. The presented study proposes a way of strengthening commercially pure copper by combining 5 wt% addition of La2O3 particles and deformation processing. The composite is vacuum induction cast and subsequently processed by the equal channel angular pressing (ECAP) severe plastic deformation method. Single‐pass ECAP through a die with 110° angle is selected to observe the effect of La2O3 addition on the development of substructure at the beginning of plastic deformation. The results show that the addition of oxide particles not only enhances the microhardness, but also efficiently supports the development of subgrains and shear bands during deformation, which finally results in an increase in the microhardness of the composite to more than double the original copper value. Although the presence of La2O3 particles slightly decreases the electric conductivity, the subsequent ECAP processing provides the final composite with a conductivity of 97.9% IACS (International Annealed Copper Standard), as it promotes the alignment of the strengthening particles along the developed shear bands.

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Pinning effect of Y₂O₃ network on copper grain growth during high temperature annealing

Cited by 3 publications

References 31 publications

Research Progress in Interfacial Characteristics and Strengthening Mechanisms of Rare Earth Metal Oxide-Reinforced Copper Matrix Composites

Research Progress in Interfacial Characteristics and Strengthening Mechanisms of Rare Earth Metal Oxide-Reinforced Copper Matrix Composites

EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS.

Deformation Behavior of La₂O₃‐Doped Copper during Equal Channel Angular Pressing

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Pinning effect of Y2O3 network on copper grain growth during high temperature annealing

Cited by 3 publications

References 31 publications

Research Progress in Interfacial Characteristics and Strengthening Mechanisms of Rare Earth Metal Oxide-Reinforced Copper Matrix Composites

Research Progress in Interfacial Characteristics and Strengthening Mechanisms of Rare Earth Metal Oxide-Reinforced Copper Matrix Composites

EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS.

Deformation Behavior of La2O3‐Doped Copper during Equal Channel Angular Pressing

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Pinning effect of Y₂O₃ network on copper grain growth during high temperature annealing

Deformation Behavior of La₂O₃‐Doped Copper during Equal Channel Angular Pressing