A new ultrahigh strength Cu–Ni–Si alloy

Lei, Qian; Li, Z.; Xiao, Tao; Pang, Yong; Xiang, Zi-qi; Qiu, Xiaoqing; Xiao, Zhu

doi:10.1016/j.intermet.2013.05.013

Cited by 119 publications

(40 citation statements)

References 29 publications

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“…Therefore, the highest microhardness value of 522 HV was measured for the ribbons as-quenched state. This hardness value is also the highest compared with the Cu-based alloys which have been produced by different techniques [7,9,[35][36][37][38][39][40][41][42][43]. It is very interesting that the all compared Cu-based alloys have crystal structures.…”

Section: Resultsmentioning

confidence: 98%

“…The phase content of the melt-spun ribbons was characterized by XRD using a Philips X'Pert powder diffractometer with Cu Ka radiation generated at 40 kV and 30 mA. The thermal behaviour was examined by Perkin-Elmer Sapphire DSC unit under inert gas atmosphere using continuous heating mode with the heating rate of 40 ribbon at wheel speed of 35 m s À1 using continuous heating mode with the heating rates of 5-40 K min À1 . The cross section of the melt-spun ribbons was examined by Zeiss Evo LS10 SEM and SEM-EDX after conventional metallographic preparation.…”

Section: Methodsmentioning

confidence: 99%

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Microstructural characterization of rapidly solidified Cu 50 Zr 40 Ni 5 Ti 5 amorphous alloy

Kursun

Göğebakan

2015

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Microstructural characterization of rapidly solidified Cu 50 Zr 40 Ni 5 Ti 5 amorphous alloy

Kursun

Göğebakan

2015

Journal of Alloys and Compounds

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“…In order to develop their properties, not only the Ni/Si ratio but also thermo-mechanical routes are important factors. Several reports suggest that the addition of elements like Co, Zr, Cr, Ti, V, Al, Mg [3][4][5][6][7] and thermo-mechanical routes [8,9] enhance the properties further and make modified Cu-Ni-Si alloys good alternative materials to Cu-Be and Cu-Co-Ni-Be alloys that have high toxicity. The enhancement of properties can be attributed to both the formation of nanosized δ-Ni2Si precipitates and their interaction with the dislocations within α-Cu matrix.…”

Section: Introductionmentioning

confidence: 99%

Characterization of fatigue failed aged Cu-Ni-Si alloys

et al. 2018

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The precipitation hardenable and non-toxic Cu-Ni-Si alloys are good alternatives to Cu-Be and Cu-Co-Ni-Be alloys due to their high strength and high conductivity that can be attained by not only alloying but also thermo-mechanical routes. In this study, the fractographic analysis was carried out to understand the fatigue failure of aged 2.55Ni-0.55Si-0.25Zr-0.25Cr (wt-%) alloy which is a member of Corson family. In fatigue tests, a constant amplitude loading was applied at a stress ratio (R = σmin/σmax) of -1 and different stress levels (400, 350, 200 and 175 MPa) were used. The fracture response of the alloy was discussed depending on the applied stress levels and microstructural features. It was concluded that (i) Ni,Zr-rich precipitates and Cr-rich precipitates at the grain boundaries caused crack nucleation at all stress levels and (ii) the interaction between Ni-rich silicides and dislocations at lower stress level resulted in localized shearing and fine striations.

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“…Many commercial Cu-Ni-Si alloys utilize the thermomechanical treatment of solution treatment and ageing to introduce continuous precipitation (CP) of Ni 2 Si particles in a copper matrix as hardening particles [6,7]. The addition of certain secondary elements may increase the driving force for precipitation promoting the discontinuous precipitation (DP) [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Increasing toughness by promoting discontinuous precipitation in Cu–Ni–Si alloys

Han

Lee

Goto

et al. 2016

Philosophical Magazine Letters

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The influence of precipitation morphology, including continuous precipitation (CP) and discontinuous precipitation (DP), on the mechanical behaviour of Cu-Ni-Si alloys was studied. The Cu-6Ni-1.5Si (in wt%) alloy was solution heat treated at 980 °C for 2 h and aged at 500 °C for 0.5 and 3 h to produce CP and DP structures. The DP specimen showed an abnormal increase in tensile ductility with increasing strain rate, unlike the CP counterpart. The impact toughness of the DP specimen was 1.6 times greater than that of CP specimen. The fracture mode in DP specimen was mostly dimpled rupture, while the mixed mode of cleavage fracture and dimpled rupture was noted on the CP specimen.

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A new ultrahigh strength Cu–Ni–Si alloy

Cited by 119 publications

References 29 publications

Microstructural characterization of rapidly solidified Cu 50 Zr 40 Ni 5 Ti 5 amorphous alloy

Microstructural characterization of rapidly solidified Cu 50 Zr 40 Ni 5 Ti 5 amorphous alloy

Characterization of fatigue failed aged Cu-Ni-Si alloys

Increasing toughness by promoting discontinuous precipitation in Cu–Ni–Si alloys

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