Hot Deformation Behavior of Cu–Sn–La Polycrystalline Alloy Prepared by Upcasting

Hua, Siming; Zhang, Pingze; Liu, Zili; Yang, Lin

doi:10.3390/ma13173739

Cited by 3 publications

(6 citation statements)

References 15 publications

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“…The flow stress of the alloy is closely related to the strain rate and deformation temperature. The strain rate, temperature and flow stress of the alloy satisfy the Zener-Hollomon parameter expression [16-18]: where Z represents a temperature-compensated strain rate; Q is the deformation activation energy; R is the gas constant of 8.314 J (mol-K) −1 ; is the strain rate; is the stress, and T is the deformation temperature (K); A, A 1 , A 2 and A 3 are all constants; , , n represents the parameter related to the strain rate sensitivity index. And .…”

Section: Resultsmentioning

confidence: 99%

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Study on microstructure evolution and hot deformation behaviour of Cu–6.5Fe–0.3Mg alloy

Wang

Luo

Yuan

et al. 2023

Materials Science and Technology

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The hot deformation behaviour and microstructure evolution of the Cu–6.5Fe–0.3Mg alloy were explored. The optimum hot working temperature of the alloy was 950°C and the strain rate was 10 s−1. The alloy underwent dynamic recovery (DRV) and dynamic recrystallisation (DRX) behaviour during hot compression. The density of the Fe phase particles increased significantly, and they were all aligned along the vertical compression direction. The α-Fe phase transformed to γ-Fe phase at 950°C. A large amount of α-Fe and γ-Fe phases effectively inhibited the DRX behaviour of the Cu–6.5Fe–0.3Mg alloy and significantly improved its thermal stability. The research on the hot deformation behaviour of the Cu–6.5Fe–X alloys had a theoretical guiding role in determining its hot working process. Highlights The optimal hot deformation process of Cu–6.5Fe–0.3Mg alloy was clarified. Constitutive equations and thermal working diagrams of the alloys are constructed Thermal deformation significantly increases Fe particle density, optimising its distribution. the transformation of α-Fe phase to γ-Fe phase during the hot compression at 950°C. The increasing in Fe phase significantly inhibits the dynamic recrystallization of the alloy.

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Section: Resultsmentioning

confidence: 99%

Section: Hot Processing Map Of Cu-65fe-03mg Alloymentioning

confidence: 99%

Study on microstructure evolution and hot deformation behaviour of Cu–6.5Fe–0.3Mg alloy

Wang

Luo

Yuan

et al. 2023

Materials Science and Technology

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“…d precip (12) where ν represents Poisson's ratio, d precip and f precip represent the diameter and volume fraction of the precipitated Fe phase, respectively, which can be obtained from Figure 7, and the related parameters are shown in Table 2. The precipitation phase strengthening values of the Cu-5Fe and Cu-5Fe-0.15Sn alloys after aging at 400 °C were calculated by Eq.…”

Section: Influence Of Sn On the Strength Of Cu-5fe Alloymentioning

confidence: 99%

“…The precipitation phase strengthening values of the Cu-5Fe and Cu-5Fe-0.15Sn alloys after aging at 400 °C were calculated by Eq. (12).…”

Section: Influence Of Sn On the Strength Of Cu-5fe Alloymentioning

confidence: 99%

Influences of Sn on Fe phase segregation and properties of Cu-5Fe alloy

Luo

Wang

Yuan³

et al. 2023

Materials Science and Technology

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The Cu-5Fe-xSn alloy was prepared, and the effect of Sn on Fe phase distribution, precipitation kinetics, and properties of the Cu-5Fe alloy were investigated. The tensile strength and conductivity of Cu-5Fe-0.15Sn after aging at 400°C were 712 MPa and 66.6% IACS, respectively. Compared to the Cu-5Fe alloy, the tensile strength increased by about 190 MPa, while the conductivity decreased by only 1.4% IACS. Sn optimises Fe distribution and inhibits dendritic segregation. After drawing, the Fe phase is transformed into Fe fibre. Sn enhances the synergistic deformation ability of Cu/Fe, resulting in better continuity and density of Fe fibres. The precipitation activation energies of Fe in Cu-5Fe and Cu-5Fe-0.15Sn alloys were 95.9 and 84.9 kJ/mol, respectively. HIGHLIGHTS The addition of Sn significantly improves the mechanical properties of Cu-5Fe alloy. Sn addition optimised the primary Fe phase distribution and increased the Fe fibre density. The addition of Sn reduces the ultimate solid solubility of Fe in Cu and promotes the nucleation of γ-Fe phase. Sn reduces the activation energy of Fe phase and promotes the precipitation of Fe phase.

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“…For example, doping with the rare earth element Sc significantly inhibits discontinuous precipitation and leads to continuous precipitation within the grain; thus, the hardness of the alloy is improved [ 8 ]. Rare earth elements are surface-active elements that can improve the fluidity of the metal matrix by reducing the surface tension of the metal matrix [ 9 ]. The decrease of the surface tension leads to increased wettability of the reinforcement in the metal matrix, which increases the surface diffusion coefficient of the reinforcement [ 10 ].…”

Section: Introductionmentioning

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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Hot Deformation Behavior of Cu–Sn–La Polycrystalline Alloy Prepared by Upcasting

Cited by 3 publications

References 15 publications

Study on microstructure evolution and hot deformation behaviour of Cu–6.5Fe–0.3Mg alloy

Study on microstructure evolution and hot deformation behaviour of Cu–6.5Fe–0.3Mg alloy

Influences of Sn on Fe phase segregation and properties of Cu-5Fe alloy

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

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