Improving the Mechanical Properties of Cu-15Ni-8Sn Alloys by Addition of Titanium

Zhao, Chao; Zhang, Weiwen; Wang, Zhi; Li, Daoxi; Luo, Zongqiang; Chao, Yang; Zhang, Datong

doi:10.3390/ma10091038

Cited by 61 publications

(18 citation statements)

References 22 publications

(27 reference statements)

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“…The chemical composition was the same for both bars as reported in Table 1. as typical for this kind of alloys [13]. Tensile, hardness and fatigue tests, along with microstructural analysis, were performed on several specimens extracted from both bars, as described in the following sections.…”

Section: Materials and Mechanical Tests Descriptionmentioning

confidence: 99%

Microstructure and Fatigue Behavior of a Ni-Cu-Sn Alloy

Bertini

Bucchi

Frendo

et al. 2018

Metals

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In this paper, the static and fatigue properties of a Cu-Ni-Sn alloy are investigated. Tensile tests, hardness tests and microstructural analyses using optical and scanning electron microscopy (SEM) were performed and two sets of fatigue tests, with load ratio (R) R = − 1 and R = 0 , respectively, were carried out. The results showed the capability of the alloy to bear high static stress, thanks to its good strength properties. However, the fatigue tests showed a strong sensitivity of the alloy fatigue properties depending on the raw material batch. The comparison between microstructural analyses and fatigue test results showed a strong correlation; in particular, the specimens having a more inhomogeneous microstructure showed lower durability. In addition, the different microstructure also affected the fracture surface morphology as highlighted by SEM analyses.

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Section: Materials and Mechanical Tests Descriptionmentioning

confidence: 99%

Microstructure and Fatigue Behavior of a Ni-Cu-Sn Alloy

Bertini

Bucchi

Frendo

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…Increasing the strength and toughness of Cu-15Ni-8Sn alloy has been the direction of efforts. The addition of micro-alloying elements to Cu-15Ni-8Sn alloy is an effective method of simultaneously improving its strength and toughness [18]. For example, the addition of Nb can simultaneously improve the strength and toughness of Cu-15Ni-8Sn alloy [19,20].…”

Section: Introductionmentioning

confidence: 99%

Microstructures, mechanical properties, and grease-lubricated sliding wear behavior of Cu-15Ni-8Sn-0.8Nb alloy with high strength and toughness

et al. 2020

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Alloys used as bearings in aircraft landing gear are required to reduce friction and wear as well as improve the load-carrying capability due to the increased aircraft weights. Cu-15Ni-8Sn-0.8Nb alloy is well known for possessing good mechanical and wear properties that satisfy such requirements. In this study, the microstructure, mechanical properties, and grease-lubricated sliding wear behavior of Cu-15Ni-8Sn-0.8Nb alloy with 0.8 wt% Nb are investigated. The nanoscale NbNi3 and NbNi2Sn compounds can strengthen the alloy through the Orowan strengthening mechanism. A Stribeck-like curve is plotted to illustrate the relationship among friction coefficient, normal load, and sliding velocity and to analyze the grease-lubricated mechanism. The wear rate increases with normal load and decreases with sliding velocity, except at 2.58 m/s. A wear mechanism map has been developed to exhibit the dominant wear mechanisms under various friction conditions. When the normal load is 700 N and the sliding velocity is 2.58 m/s, a chemical reaction between the lubricating grease and friction pairs occurs, resulting in the failure of lubricating grease and an increase in wear.

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“…Research shows that microstructure evolution is affected by applied stress at elevated temperatures [ 5 , 6 ]. However, the effect of second phase particles on the grain size under applied stress has been investigated qualitatively or semi-quantitatively because of the difficulty and cost of precise control of second phase particles or quasi-crystal by experimental methods [ 3 , 4 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Grain Refinement by Second Phase Particles under Applied Stress in ZK60 Mg Alloy with Y through Phase Field Simulation

et al. 2018

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Based on the principle of grain refinement caused by the second-phase particles, a phase field model was built to describe the recrystallization process in the ZK60 alloy system with Y added under applied stress between temperatures 573 and 673 K for 140 min duration. The simulation of grain growth with second phase particles and applied stress during annealing process on industrial scale on the condition of real time-space was achieved. Quantitative analysis was carried out and some useful laws were revealed in ZK60 alloy system. The second phase particles had a promoting effect on the grain refinement, however the effect weakened significantly when the content exceeded 1.5%. Our simulation results reveal the existence of a critical range of second phase particle size of 0.3–0.4 μm, within which a microstructure of fine grains can be obtained. Applied stress increased the grain coarsening rate significantly when the stress was more than 135 MPa. The critical size of the second phase particles was 0.4–0.75 μm when the applied stress was 135 MPa. Finally, a microstructure with a grain size of 11.8–13.8 μm on average could be obtained when the second phase particles had a content of 1.5% and a size of 0.4–0.75 μm with an applied stress less than 135 Mpa after 30 min annealing at 573 K.

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Improving the Mechanical Properties of Cu-15Ni-8Sn Alloys by Addition of Titanium

Cited by 61 publications

References 22 publications

Microstructure and Fatigue Behavior of a Ni-Cu-Sn Alloy

Microstructure and Fatigue Behavior of a Ni-Cu-Sn Alloy

Microstructures, mechanical properties, and grease-lubricated sliding wear behavior of Cu-15Ni-8Sn-0.8Nb alloy with high strength and toughness

Grain Refinement by Second Phase Particles under Applied Stress in ZK60 Mg Alloy with Y through Phase Field Simulation

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