Precipitation evolution in Cu [Ni3Cr1] spinodal alloys under mismatch control

Li, X.N.; Li, Z.M.; Cheng, Xinquan; Sun, Wei; Zheng, Yuehong; Yu, Qun; Wang, C.Y.; Wang, Q.; Chen, Dong

doi:10.1016/j.matchemphys.2018.11.035

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…1, we know that the concentration gradient energy can significantly affect the shape of precipitation phas, and it is lath-shaped when kc is larger than 0.9 and irregularly shaped when kc is in a range of 0.5-0.7. Li et al [30] obtained similar conclusions in Cu-Ni-Cr spinodal alloys. To figure out the influence of the concentration gradient term on the pattern formation of spinodal decomposition, volume fractions of different spinodal structures versus kc are summarized in Fig.…”

Section: Resultsmentioning

confidence: 56%

Phase-field study of spinodal decomposition under effect of grain boundary*

Deng¹,

Guo²,

Wang³

et al. 2021

Chinese Phys. B

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Grain boundary directed spinodal decomposition has a substantial effect on the microstructure evolution and properties of polycrystalline alloys. The morphological selection mechanism of spinodal decomposition at grain boundaries is a major challenge to reveal, and remains elusive so far. In this work, the effect of grain boundaries on spinodal decomposition is investigated by using the phase-field model. The simulation results indicate that the spinodal morphology at the grain boundary is anisotropic bicontinuous microstructures different from the isotropic continuous microstructures of spinodal decomposition in the bulk phase. Moreover, at grain boundaries with higher energy, the decomposed phases are alternating α/β layers that are parallel to the grain boundary. On the contrary, alternating α/β layers are perpendicular to the grain boundary.

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Section: Resultsmentioning

confidence: 56%

Phase-field study of spinodal decomposition under effect of grain boundary*

Deng¹,

Guo²,

Wang³

et al. 2021

Chinese Phys. B

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“…In this paper, a Cr element is introduced by adding a Ni-Cr intermediate alloy. The Cr element is integrated into the copper matrix along with the Ni element, which promotes the uniform distribution of the Cr element in the matrix [4]. Therefore, the addition of Cr into the Cu-Ni system is anticipated to yield copper alloys that possess both high strength and electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…With an increase of the Cr content, the average radius of the Ni-rich phase and Cr precipitates increased at the same aging time. Li et al [4] found that by controlling a certain nickel-chromium ratio and by changing the alloy content in the alloy system, an increase of the Cu content led to an increase of the cubic precipitates inside the alloy, which improved the strength of the alloy. The inclusion of higher amounts of Cr resulted in the formation of numerous Cr-rich precipitates along the grain boundaries, which had a negative impact on the mechanical properties of the alloy.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cold Rolling Reduction Rate on the Microstructure and Properties of Cu-1.16Ni-0.36Cr Alloy after Thermo-Mechanical Treatment

Sun,

Li,

Song

et al. 2023

Materials

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In this paper, a Cu-Ni-Cr alloy was prepared by adding a Ni-Cr intermediate alloy to copper. The effects of the cold rolling reduction rate on the microstructure and properties of the Cu-1.16Ni-0.36Cr alloy after thermo-mechanical treatment were studied. The results show that the tensile strength of the alloy increased while the electrical conductivity slightly decreased with an increase of the cold rolling reduction rate. At a rolling strain of 3.2, the tensile strength was 512.0 MPa and the conductivity was 45.5% IACS. At a rolling strain of 4.3, the strength further increased to 536.1 MPa and the conductivity decreased to 41.9% IACS. The grain size and dislocation density decreased with an increase of the reduction rate in the thermo-mechanical treatment. However, when the rolling strain reached 4.3, the recrystallization degree of the alloy increased due to an accumulation of the dislocation density and deformation energy, resulting in a slight increase in the grain size and a decrease in the dislocation density. The texture strength of the brass increased due to the induced shear band, with an increase of the cold rolling reduction rate. The reduction rate promoted a uniform distribution of nano-scale Cr precipitates and further enhanced the strength via precipitation strengthening.

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Microstructure and mechanical properties of a CuNiTi alloy with a large product of strength and elongation

Zhang

Lei

et al. 2020

Journal of Materials Research and Technology

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Precipitation evolution in Cu [Ni3Cr1] spinodal alloys under mismatch control

Cited by 6 publications

References 27 publications

Phase-field study of spinodal decomposition under effect of grain boundary*

Phase-field study of spinodal decomposition under effect of grain boundary*

Effects of Cold Rolling Reduction Rate on the Microstructure and Properties of Cu-1.16Ni-0.36Cr Alloy after Thermo-Mechanical Treatment

Microstructure and mechanical properties of a CuNiTi alloy with a large product of strength and elongation

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