Improved strength with good conductivity in Cu–Cr–Zr alloys: Determinant effect of under-aging treatment before rolling and aging

Wang, Y.D.; Wu, L.H.; Xue, P.; Zhang, H.; Ni, D.R.; Ma, Zhiwei

doi:10.1016/j.msea.2022.143395

Cited by 21 publications

(3 citation statements)

References 37 publications

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“…It can be found that with an increasing cold-rolling ratio before aging, the yield strength and tensile strength increased obviously. One reason for this is that dislocations in the cold-rolled specimens can promote the nucleation of the precipitates, and thus a higher density and finer precipitation particles can be formed [ 17 , 18 ]; thus, the CR3-P specimen has much higher strength. Part of the deformation strengthening might be maintained, but should not be significant at the aging temperature of 400 °C [ 26 , 27 ].…”

Section: Resultsmentioning

confidence: 99%

“…The combination of deformation (rolling, drawing) and heat treatment (annealing, aging) is a common method to improve the mechanical properties of metals and has been widely used to optimize high-strength and high-conductivity Cu alloys [ 15 , 16 ]. The dislocations formed during the cold working process are considered to be promotive of precipitation [ 17 , 18 ], and cold rolling after aging can further improve strength [ 19 ]. The evolutions in grain structure, precipitates, and the mechanical and electrical properties of the Cu-Cr-Sn alloy during the cold rolling deformation and heat treatment processes were comprehensively characterized.…”

Section: Introductionmentioning

confidence: 99%

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Influences of Cold Rolling and Aging on Microstructure and Property of CuCrSn Alloy

Chen

Zhang

Liu³

et al. 2023

Materials

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The CuCrSn alloy is promising as a high-strength and high-conductivity Cu alloy due to its relatively low smelting requirement. However, thus far investigations into the CuCrSn alloy are still quite lacking. In this study, the microstructure and properties of Cu-0.20Cr-0.25Sn (wt%) alloy specimens prepared under different rolling and aging combinations were comprehensively characterized, in order to reveal the effects of cold rolling and aging on properties of the CuCrSn. The results show that increasing the aging temperature from 400 °C to 450 °C can noticeably accelerate precipitation, and cold rolling before aging significantly increases its microhardness and promotes precipitation However, the deformation hardening is eliminated during the aging process, making the microhardness decrease monotonically when the aging temperature and the cold rolling ratio before aging are high. Performing cold rolling after aging can maximize precipitation strengthening and deformation strengthening, and the adverse impact on its conductivity is not serious. A tensile strength of 506.5 MPa and a conductivity of 70.33% IACS were obtained by such a treatment, whereas only the elongation decreases a little. Different strength-conductivity combinations of the CuCrSn alloy can be achieved through appropriate design of the aging and post-aging cold rolling conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influences of Cold Rolling and Aging on Microstructure and Property of CuCrSn Alloy

Chen

Zhang

Liu³

et al. 2023

Materials

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“…Copper alloys find extensive application in various industries including electrical, construction, and aerospace, owing to their exceptional conductivity, thermal conductivity, and resistance to corrosion [1][2][3][4]. However, the relatively low mechanical strength of pure copper limits its application in high-performance scenarios.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Alloy Atomic Doping on the Properties of Cu-Sn Alloys Based on First Principles

Wei,

Chen,

Xue

et al. 2024

Metals

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In order to design Cu-Sn alloys with excellent overall performance, the structural stability, mechanical properties, and electronic structure of X-doped Cu-Sn alloys were systematically calculated using first-principles calculations. The calculation results of the cohesive energy indicate that the Cu-Sn-X structures formed by X atoms (X = Ag, Ca, Cd, Mg, Ni, Zr) doping into Cu-Sn can stably exist. The Cu-Sn-Ni structure is the most stable, with a cohesive energy value of −3.84 eV. Doping of X atoms leads to a decrease in the bulk modulus, Possion’s ratio and B/G ratio. However, doping Ag and Ni atoms can improve the shear modulus, Young’s modulus, and strain energy of the dislocation. The doping of Ni has the highest enhancement on shear modulus, Young’s modulus, and strain energy of the dislocation, with respective values as follows: 63.085 GPa, 163.593 GPa, and 1.689 W/J·m−1. The analysis of electronic structure results shows that the covalent bond between Cu and X is the reason for the performance differences in Cu-Sn-X structures.

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Effects of Heating Temperature and Holding Time on Microstructure and Mechanical Properties of Thixoforged A356 Aluminum Alloy Parts

Liu

Jiang

Xiao

et al. 2022

J. of Materi Eng and Perform

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Improved strength with good conductivity in Cu–Cr–Zr alloys: Determinant effect of under-aging treatment before rolling and aging

Cited by 21 publications

References 37 publications

Influences of Cold Rolling and Aging on Microstructure and Property of CuCrSn Alloy

Influences of Cold Rolling and Aging on Microstructure and Property of CuCrSn Alloy

Investigation of the Influence of Alloy Atomic Doping on the Properties of Cu-Sn Alloys Based on First Principles

Effects of Heating Temperature and Holding Time on Microstructure and Mechanical Properties of Thixoforged A356 Aluminum Alloy Parts

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