Environmentally assisted degradation of spinodal copper alloy C72900

Johnsen, Roy; Lange, Torstein; Stenerud, Gaute; Olsen, Jim Stian

doi:10.1016/j.corsci.2018.06.031

Cited by 22 publications

(3 citation statements)

References 12 publications

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“…This technology can effectively inhibit the segregation of Sn in the alloy and improve machinability. In addition, with the breakthrough of industrialization technology for Cu-15Ni-8Sn alloy, researchers pay more and more attention to the research of alloy application properties such as corrosion resistance, stress relaxation resistance, and wear resistance [10][11][12][13][14][15].…”

Section: Development Process Of Cu-15ni-8sn Alloymentioning

confidence: 99%

Research Progress on Cu–15Ni–8Sn Alloys: The Effect of Microalloying and Heat Treatment on Microstructure and Properties

Yang,

Song,

Zhou

et al. 2023

Materials

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Cu–15Ni–8Sn alloy is the best choice to replace beryllium bronze alloy. This alloy has unparalleled application value in aerospace, ocean engineering, electronic information, equipment manufacturing, and other fields. However, the application of Cu–15Ni–8Sn alloy is challenged and limited because of a series of problems in its preparation and processing, such as easy segregation, difficult deformation, and discontinuous precipitation. It is an effective way to improve the comprehensive properties of Cu–15Ni–8Sn alloy using alloying design and process optimization to control the as-cast, deformed, and heat-treated microstructures. At present, it is a hot spot for scholars to study. In this paper, the grade generation, system evolution, and preparation technology development of Cu–15Ni–8Sn alloy are comprehensively reviewed. The phase transformation sequence of the Cu–15Ni–8Sn alloy is discussed. The influence of the type, amount, and existing form of alloying elements on the strength of Cu–15Ni–8Sn alloy and its mechanism are systematically summarized. Furthermore, the latest research progress on the effects of solid solution, cold deformation, and aging on the phase structure transformation and mechanical properties of Cu–15Ni–8Sn alloy is summarized. Finally, the future development trend of the Cu–15Ni–8Sn alloy is projected. The research results of this paper can provide a reference for the control of the microstructure and properties of high-performance Cu–15Ni–8Sn alloys used in key fields, as well as the optimization of the preparation process and alloy composition.

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Section: Development Process Of Cu-15ni-8sn Alloymentioning

confidence: 99%

Research Progress on Cu–15Ni–8Sn Alloys: The Effect of Microalloying and Heat Treatment on Microstructure and Properties

Yang,

Song,

Zhou

et al. 2023

Materials

View full text Add to dashboard Cite

show abstract

“…The Cu-15Ni-8Sn alloy is a typical copper alloy strengthened by amplitude modulation decomposition 1,2 ; it has high strength, good stress relaxation resistance, wear resistance and corrosion resistance. 3,4 As a substitute material for beryllium bronze, this alloy has potential application prospects in various fields, including aerospace, electronic information, heavy-duty equipment and ocean engineering. 5,6 However, due to the high Sn content and wide solidification area of the Cu-15Ni-8Sn alloy, it is difficult to control the compositional consistency and microstructural uniformity in the casting process, which affects the subsequent deformation and comprehensive property improvement.…”

Section: Introductionmentioning

confidence: 99%

Interaction mechanism of elements and second phase characteristics in as-cast Cu–15Ni–8Sn–(1Al–0.1Y) alloy

Yang,

Zhou,

Zhang

et al. 2024

Materials Science and Technology

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In this article, the effects of Al and Y elements on the microstructure and mechanical properties of Cu–15Ni–8Sn alloy were studied. The interaction mechanism between elements is proved by first-principles calculation. The results show that the strength of Cu–15Ni–8Sn–1Al–0.1Y alloy reaches 760 MPa, and the hardness of matrix (α-Cu) and Sn-rich phase (γ) are 292.43 and 341.65 HV, respectively, which are 23.78%, 97.80% and 65.21% higher than those of Cu–15Ni–8Sn alloy, respectively. The formation of a large number of dispersed nano-scale Ni3Al second phase is the main reason for the great improvement of the strength of the alloy. In addition, the solid solution of Al and the formation of the Ni17Y2 phase improve the hardness of the Sn-rich phase.

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“…Cu-15Ni-8Sn alloys possess excellent mechanical properties and excellent stress relaxation resistance, as well as excellent wear resistance and corrosion resistance, being considered as promising beryllium–copper substitute materials [ 1 , 2 ]. These high-performance copper alloys have great potential applications in the electronic and electrical industries, and simultaneously show wide prospects for major equipment involving aircraft landing gear, heavy loaded vehicles, and marine engineering equipment [ 3 , 4 , 5 ]. However, the trade-off between strength and ductility of the alloys is still the critical problem for meeting the increasing performance demands of key components in aerospace, mechanical systems, and the oil and gas industries.…”

Section: Introductionmentioning

confidence: 99%

Improving the Thermal Stability of the Fine-Grained Structure in the Cu-15Ni-8Sn Alloy during Solution Treatment by the Additions of Si and Ti

Zhao

Liu

et al. 2023

Materials

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Grain refinement has been found to be an effective method for simultaneously enhancing strength and toughness. To avoid the sharp coarsening of grains in Cu-Ni-Sn alloys during solution treatment and thereby overcoming the tradeoff between strength and ductility, this work attempted to modify the composition and improve the thermal stability of the fine-grained structure in Cu-Ni-Sn alloys. The grain growth behavior during a solution treatment of the Cu-15Ni-8Sn alloys with/without Si and Ti additions was systematically investigated. The result reveals that compared to the grain size of 146 μm in the based alloy (without trace additions) after solution processing at 1073 K for 2 h, the fine-grained structure with a size below 20 μm is maintained owing to the benefit from Si and Ti addition. It was observed that the addition of Si and Ti offer the inhibition effect on the dissolution of the γ phase and Ni16Si7Ti6 particles after solution treatment. The grain boundary movement is severely hindered by these two aspects: the pinning effect from these particles, and the drag effect induced by additional solute atoms. Based on the analysis of grain growth kinetics, the activation energy of grain growth is increased from 156 kJ/mol to 353 kJ/mol with the addition of Si and Ti.

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Environmentally assisted degradation of spinodal copper alloy C72900

Cited by 22 publications

References 12 publications

Research Progress on Cu–15Ni–8Sn Alloys: The Effect of Microalloying and Heat Treatment on Microstructure and Properties

Research Progress on Cu–15Ni–8Sn Alloys: The Effect of Microalloying and Heat Treatment on Microstructure and Properties

Interaction mechanism of elements and second phase characteristics in as-cast Cu–15Ni–8Sn–(1Al–0.1Y) alloy

Improving the Thermal Stability of the Fine-Grained Structure in the Cu-15Ni-8Sn Alloy during Solution Treatment by the Additions of Si and Ti

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