Effect of the Cooling Rate on the Microstructure and Properties of C92900 Bronze

Баженов, В. Е.; Titov, A. Yu.; Шкалей, И. В.; Sannikov, A. V.; Nikitina, A. A.; Plisetskaya, I. V.; Базлов, А. И.; Mezrin, A. M.; Колтыгин, А. В.

doi:10.3103/s1067821221030044

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…Due to the low solubility of the iron element in copper, it is precipitated during the process of cooling, usually forming a dispersed second phase with the phosphorus element in the copper alloy. The second phase precipitated from the matrix raises the recrystallization temperature, while realizing the strengthening effect by dislocating pinning and impeding grain boundary migration [13][14][15] .…”

Section: Comse-2023mentioning

confidence: 99%

Study on Softening Resistance of Cu-Sn-Fe-P alloy for Advanced Electrical Connectors

Yuan,

Yang,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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The effect of adding iron element in tin bronze on the microstructure and properties of Cu-Sn-Fe-P alloy is studied by means of phase diagram calculation and microstructure observation. The work hardening curve of Cu-Sn-Fe-P alloy is plotted by cold deformation of the alloy with different reduction rates. The test and microstructure observation are conducted for tensile strength and ductility of the alloy sample annealed at different temperatures, so as to determine the recrystallization temperature of the alloy. The results show that the addition of iron element plays a significant role in grain refinement and improves the subsequent working performance. After the cold rolling deformation, an obvious work hardening effect is imposed on the alloy. With the increase of the deformation, the alloy presents a trend of increasing first and then becoming stable in the tensile strength, while a reverse trend in ductility. Cu-Sn-Fe-P alloy has a softening resistance equivalent to that of QSn6.5-0.1 high-tin bronze, both of which will be softened at 400ºC; therefore, Cu-Sn-Fe-P alloy can replace QSn6.5-0.1 alloy at high temperature.The present study proposes how to maintain the original properties of the tin-phosphorous bronze alloy while reducing the content of the tin, and achieve the more effective industrialized production.

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Section: Comse-2023mentioning

confidence: 99%

Study on Softening Resistance of Cu-Sn-Fe-P alloy for Advanced Electrical Connectors

Yuan,

Yang,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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“…In industrial applications, pressure tightness is essential for tin bronzes [49][50][51][52][53][54]. One of the drawbacks of tin bronzes is their tendency to form structural defects such as porosity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alloying Additives and Moulding Technology on Microstructure, Tightness, and Mechanical Properties of CuSn10 Bronze

Witasiak,

Garbacz-Klempka,

Papaj

et al. 2023

Materials

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Thise research was conducted to determine the impact of the applied casting technology, mould and alloying additives on the tightness of the CuSn10 cast alloy. Under industrial conditions, a series of experimental melts were made that were characterised by varying the concentrations of the main alloying element (Sn) and the introduced alloying additives (Si, Zn, Zr). The mould was made from green sand and used the CO2 moulding process. To assess the influence of the alloying additives, a metallographic analysis of the studied alloy was carried out, and the alloy’s microstructure was examined using optical and scanning electron microscopy. The introduced alloying additives affected the properties and microstructure of the studied alloy. As alloying additives, zirconium resulted in a visible refinement of the microstructure, while silicon improved the fluidity and quality of the casting’s external surface. The use of alloying additives and moulds made using different technologies is intended to improve the structure of the tin bronze castings produced and to find the best solution to significantly eliminate the lack of leakage of the castings. The castings were subjected to mechanical processing, and a leak test was performed using the pressure drop method. The conducted research allowed us to determine which technology, applied to production, will bring about a reduction in the problem and will inform further investigations.

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“…Tin bronze has excellent thermal conductivity and can remarkably conduct the energy generated by friction during the operation of the sliding bearings [12,13]. Soft metal silver is often used in heavy-load and high-speed sliding bearing bushes, which have excellent plastic deformation performance, fatigue resistance, and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

The Characterization of Running-In Coatings on the Surface of Tin Bronze by Electro-Spark Deposition

Zhengchuan

Коноплянченко²,

Tarelnyk³

et al. 2022

Coatings

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Antifriction materials, such as silver, copper, Babbitt B83, and graphene oxide (GO), were used to prepare running-in coatings on the surface of bronze QSn10-1 by electro-spark deposition (ESD). The analyses of mass transfer, roughness, thickness, morphology, composition, nanoindentation, and tribological properties of the coatings were investigated. The results showed that the running-in coatings were dense with refined grains that were uniformly distributed and in a metallurgical bond state with the tin bronze substrate. At optimum process parameters, the mass transfer was 244.2 mg, the surface roughness was 15.9 μm, and the thickness of the layers was 160 μm. The diffraction peaks clearly indicated the phases corresponding to α-Sn, SbSn, Cu6Sn5, and Cu, and a phase of Ag3Sn appeared. The modulus and the hardness of the running-in coatings were 24.9% and 14.2% of the substrate, and the deformation ratio of the coatings was 10.2% higher than that of the substrate. The friction coefficient of the running-in coatings was about 0.210 after the running-in stage, which was 64.8% of that of the substrate (0.324). The main wear mechanism of the running-in coatings under optimal process parameters is plastic deformation, scratching, and slight polishing. The running-in coating deformation under the action of high specific loads provides the automatic adjustment of parts and compensation for manufacturing errors.

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Effect of the Cooling Rate on the Microstructure and Properties of C92900 Bronze

Cited by 4 publications

References 16 publications

Study on Softening Resistance of Cu-Sn-Fe-P alloy for Advanced Electrical Connectors

Study on Softening Resistance of Cu-Sn-Fe-P alloy for Advanced Electrical Connectors

Effect of Alloying Additives and Moulding Technology on Microstructure, Tightness, and Mechanical Properties of CuSn10 Bronze

The Characterization of Running-In Coatings on the Surface of Tin Bronze by Electro-Spark Deposition

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