Microstructure and properties of Cu–3Ti–1Ni alloy with aging process

Wang, Xianhui; Qianni, Ran; Zhao, Gang; Zhu, Xiuxiu

doi:10.1016/s1003-6326(16)64450-3

Cited by 27 publications

(9 citation statements)

References 26 publications

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“…The production of Cu 4 Ti 3 was limited to the appearance of Cu 4 Ti, which tends to follow mainly the partial decomposition reaction [33] Cu 4 Ti=Cu 3 Ti+Cu. The Cu 3 Ti was observed in reason of reaction of the Cu 4 Ti in copper-saturated regions [29,38]. This reaction stabilized Cu 4 Ti in more stable phases like Cu 3 Ti.…”

Section: Microstructure Of the Compositesmentioning

confidence: 93%

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Bohórquez

Pérez

Sarmiento-Santos

et al. 2020

Mater. Res. Express

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Microstructure and tribological properties had been studied in a Cu-Ti-1%TiC MMC with titanium concentration of 10%, 15%, and 20%. The composite was manufactured following the pulvimetallurgical route that included: mechanical and ultrasonic mixing in 2-propanol, compaction at 400 MPa and sintering assisted by abnormal glow discharge in an atmosphere of 10% nitrogen and 90% argon. The discharge was established in the direct current regime and the voltage values were adjusted according to the sintering temperatures of 750°C and 850°C. The sintering process was carried out for 30 min and then cooled in the same atmosphere. As a result, a differentiated in morphology and wear properties were obtained in the sintered parts. At 750°C a microstructure characterized by the stability of Ti grains with intermetallic precipitates such as CuTi 2 and CuTi were observed at the interface with the matrix. On the other hand, the intermetallic phases as Cu 3 Ti, Cu 4 Ti and CuTi 2 had been detected in the sintered at 850°C. These phases were related to diffusive processes that occurred during the sintering, enhanced by the energy provided by the process. It had been observed that with increase of titanium content an improvement of the MMC tribological properties. In titanium contents of 20% at 750°C was estimated a wear coefficient of 2.7 × 10 −8 mm 3 .N −1 .m −1 with a track width of 312 μm. Despite the pores originated during the sintering of MMC at 850°C was found a wear coefficient value of 2.4 × 10 −8 mm 3 .N −1 .m −1 and a track size of 778 μm, related to the plastic deformation exerted on the porous structures during the wear process. Results of the tribological analysis lead that this compound may be applied in fields where the balance between adequate tribological properties and lightness are highly required such as the automotive, aeronautical and biomedical industries.

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Section: Microstructure Of the Compositesmentioning

confidence: 93%

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Bohórquez

Pérez

Sarmiento-Santos

et al. 2020

Mater. Res. Express

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“…The solute Ti atoms, precipitated from the Cu matrix during aging could lead to the increment of electrical conductivity [13]. The electrical conductivities of all three alloys, in the peak-aged condition, are listed in Table 2.…”

Section: Electrical Propertiesmentioning

confidence: 99%

“…Addition of alloying element appears to be an effective way to improve the mechanical and electrical properties of the age-hardenable Cu-Ti alloys [11][12][13][14][15]. Extensive investigations have been carried out to realize the effects of various alloying elements on the age hardening behavior of the Cu-Ti alloys.…”

Section: Introductionmentioning

confidence: 99%

Effects of Trace Alloying Elements Fe and Cr on the Microstructure and Aging Properties of Cu-3Ti Alloy Foils

Zhao

Dong

et al. 2018

Metals

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In this work, the effects of an addition of trace alloying elements, Fe and Cr, on the mechanical and electrical properties and corrosion resistance of Cu-3Ti alloy foils, have been investigated. The results showed that the individual addition of Fe leads to the formation of Fe2Ti intermetallic phase, which refines the grain size, in the solution-treated condition. With a combined addition of Fe and Cr, the formation of the (FeCr)2Ti phase and the precipitation of the β′-Cu4Ti phase resulted in increased hardness in the peak-aged condition. The ultimate tensile strength and yield strength of the peak-aged Cu-Ti-Fe-Cr alloy were 13% and 5.7% higher, than those of the Cu-3Ti alloy, respectively. The electrical conductivity of the peak-aged Cu-Ti-Fe-Cr alloy was 3.3% higher than that of the Cu-Ti-Fe alloy, due to the finer (FeCr)2Ti phase and the less residual Ti atoms, in the Cu matrix. The combined addition of Fe and Cr elements could improve the corrosion resistance of the Cu-Ti alloy. The Cu-Ti-Fe-Cr alloy foil could obtain the best integrated properties, and the hardness, ultimate tensile strength, and electrical conductivity were 357.1 HV, 1068 MPa and 12.5% IACS, respectively.

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“…At present, numerous articles have been published on the methods and precipitation behavior during the aging process of alloys such as Cu-Ti-Ni [7][8][9][10], Cu-Cr-Zr [11][12][13][14][15], Cu-Ni-Zn-Al [16], Cu-Be [17,18]. During the aging process, the precipitates will preferentially precipitate along certain crystal planes of the matrix or some place where there are high dislocation density and high solute concentration.…”

Section: Introductionmentioning

confidence: 99%

Study on aging strengthening and nano precipitates of Cu–Ni–Mn–Fe alloy

Zou

Lin

Shi

et al. 2020

Mater. Res. Express

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This paper presents a systematic study of the precipitation strengthening mechanism in polybasic Cu-Ni-Mn-Fe alloy. The effect of aging treatment on the microstructure, morphologies and phase transition of the Cu-Ni-Mn-Fe alloy were analyzed and discussed using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD) and differential scanning calorimeter (DSC), respectively. The θ-MnNi precipitates with a size of 50-100 nm, mainly formed during aging, were considered as the source of the aging strengthening. In addition, there is a semi-coherent between the plane (111) of the θ-MnNi precipitates and the plane (200) of the α-Cu matrix. The density of θ-MnNi precipitates increases with the increase of the aging time. The hardness, yield strength and ultimate tensile strength of the aged alloy increase from 127 to 366HB, 217 to 788 MPa, and 433 to 842 MPa, respectively, which is attributed to precipitation strengthening. OPEN ACCESS RECEIVED

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Microstructure and properties of Cu–3Ti–1Ni alloy with aging process

Cited by 27 publications

References 26 publications

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Effects of Trace Alloying Elements Fe and Cr on the Microstructure and Aging Properties of Cu-3Ti Alloy Foils

Study on aging strengthening and nano precipitates of Cu–Ni–Mn–Fe alloy

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