Hot working behavior of a super high strength Cu–Ni–Si alloy

Lei, Qian; Wang, Jun; Xie, Jian; Chen, Xi; Li, S.; Gao, Yafei; Li, L.

doi:10.1016/j.matdes.2013.05.001

Cited by 32 publications

(5 citation statements)

References 24 publications

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“…Many efforts have been devoted to this field and showed that the alloying elements should have little effect on the EC and possesses a large solid solubility change from high temperature to room temperature. [6][7][8][9][10] However, there is a lack of a model that quantitatively describes the relationship between alloy composition and performance. As a result, the compositional design of high-performance copper alloy mainly relies on trial and error, or intuitions.…”

Section: Intorductionmentioning

confidence: 99%

A property-oriented design strategy for high performance copper alloys via machine learning

et al. 2019

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Traditional strategies for designing new materials with targeted property including methods such as trial and error, and experiences of domain experts, are time and cost consuming. In the present study, we propose a machine learning design system involving three features of machine learning modeling, compositional design and property prediction, which can accelerate the discovery of new materials. We demonstrate better efficiency of on a rapid compositional design of high-performance copper alloys with a targeted ultimate tensile strength of 600-950 MPa and an electrical conductivity of 50.0% international annealed copper standard. There exists a good consistency between the predicted and measured values for three alloys from literatures and two newly made alloys with designed compositions. Our results provide a new recipe to realize the property-oriented compositional design for highperformance complex alloys via machine learning.

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Section: Intorductionmentioning

confidence: 99%

A property-oriented design strategy for high performance copper alloys via machine learning

et al. 2019

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“…In order to use materials, it is vital to understand the links between microstructural characteristics and material properties. Copper-nickel alloy has been listed among precipitate strengthened copper alloys with exceptional strength, corrosion resistance, good electrical and thermal conductivity, and fatigue resistance [1][2][3] [4]. Cu-Ni gains high strength and corrosion resistance through precipitation of hard secondary phases upon ageing process [5] [6].…”

Section: Introductionmentioning

confidence: 99%

GRAIN SIZE EVOLUTION, MECHANICAL AND CORROSION BEHAVIOUR OF PRECIPITATE STRENGTHENED Cu-Ni ALLOY

Nwaeju¹,

Eboh²,

Edoziuno

2022

Acta Metall Slovaca

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Grain size characteristics, mechanical properties, and corrosion resistance of Cu-10%Ni alloy heat treated at three different temperatures and times were investigated and compared with the synthesized alloy. Mechanical properties such as UTS, ductility, hardness, and impact strength were determined. An optical metallurgical microscope was used to examine the structural properties. ImageJ software was also used to measure the grain size distribution of the alloys. The corrosion behaviour of the produced Cu-10%Ni alloys is analyzed by potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS). After corrosion testing, the surface morphology of the exposed samples is analyzed by scanning electron microscope (SEM) equipped with energy dispersive spectroscopy. The corrosion rate of precipitate strengthened Cu-10%Ni alloy decreases and ultimate tensile strength, ductility, and hardness increase as the average grain size distribution decreases. The non-heat treated Cu-10%Ni alloy showed a peak value of corrosion rate and average grain size, but a lower value of mechanical properties. An increase in residual stress follows an increase in grain size distribution, which lowers the strength and increases corrosion rates due to more active sites. The research outcome has enabled the improvement of the mechanical and corrosion properties of Cu-10%Ni alloys as a component for marine and automobile applications.

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“…CuNi 2 Si alloy is a precipitation-strengthened copper alloy that exhibits high strength [1,2], good electrical and thermal conductivity [3], and has good resistance to fatigue and corrosion [4]. It is used to manufacture electrical components, such as electrical connectors, circuit breakers, and relays [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Periodic Overloads on Short Fatigue Crack Behavior in CuNi2Si Alloy under Rotating Bending Load

Qin

Yang

Feng

et al. 2020

Metals

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In this study, the short fatigue crack behavior in a precipitation-strengthened CuNi2Si alloy was investigated using a replica technique under rotating bending loads with periodic overloads, an overload ratio of 1.5, and the stress ratio of both was R = −1. The results show that all the fatigue cracks originated from the surface of the specimen and displayed a trend of slow initiation and then rapid propagation. The introduction of overloads significantly reduced the fatigue crack initiation time and the fatigue life of the sample. The average life of the overloaded samples was only 31% that of the constant load samples. For overload specimens, multiple cracks grew at the same time and merged at different stages, causing the crack length to increase instantaneously after they merged, thereby considerably reducing the fatigue life. Fractographical analysis and observation of the surface-etched sample replica film showed that cracks in samples with and without overload both propagated along the grain boundaries.

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Hot working behavior of a super high strength Cu–Ni–Si alloy

Cited by 32 publications

References 24 publications

A property-oriented design strategy for high performance copper alloys via machine learning

A property-oriented design strategy for high performance copper alloys via machine learning

GRAIN SIZE EVOLUTION, MECHANICAL AND CORROSION BEHAVIOUR OF PRECIPITATE STRENGTHENED Cu-Ni ALLOY

Effect of Periodic Overloads on Short Fatigue Crack Behavior in CuNi2Si Alloy under Rotating Bending Load

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