The deformation compatibility and recrystallisation behaviour of the alloy CuSn10P1

Wang, Qiuping; Zhou, Rongfeng; Guan, Jieren; Wang, Chunjian

doi:10.1016/j.matchar.2021.110940

Cited by 18 publications

(11 citation statements)

References 24 publications

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“…This is due to the fact that with increasing solution temperature, the solid solubility of the Sn element in the α-Cu matrix decreases, the diffusion of the Sn element into the α-Cu matrix decreases, and more Cu 41 Sn 11 phases are uniformly distributed between grains. Cu 41 Sn 11 has high brittleness [ 30 ]; therefore, the average Brinell hardness increases with increasing solution temperature, and the average Brinell hardness is 122 HBW at 690 °C. The average Brinell hardness of the thixotropic reverse-extrusion sleeve before solution treatment is 128 HBW; this shows that the average Brinell hardness is lower overall after solution treatment, which is related to the decrease in the Cu 41 Sn 11 phase after solution treatment.…”

Section: Resultsmentioning

confidence: 99%

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin–Bronze Shaft Sleeve

et al. 2022

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To study the heat-treatment process of a semi-solid copper alloy, a thixotropic back-extruded tin–bronze shaft sleeve was heat-treated at 630 °C, 660 °C, 690 °C and 720 °C for 1 h, respectively. Microstructure changes and mechanical properties under different solution temperatures of shaft sleeve were characterized using a metallographic microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), hardness tester, and tensile tester. The results show that the tensile strength first increases and then decreases; the elongation decreases; and the Brinell hardness increases gradually with increasing solution temperature. When the solution treatment is at 690 °C, the tin–bronze shaft sleeve’s microstructure and comprehensive mechanical properties are the best. The shape factor is 0.75, the average grain size is 82.52 μm, the Brinell hardness is 122 HBW, the tensile strength is 437 MPa, and the elongation is 17.4%, which is 3.4 times higher than that before solution treatment.

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Section: Resultsmentioning

confidence: 99%

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin–Bronze Shaft Sleeve

et al. 2022

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“…In this experiment, the main chemical composition of the CuSn10P1 alloy was 10.22 wt% Sn, 0.71 wt% P, 0.17 wt% impurity elements, and Cu in sufficient amounts. The semi-solid CuSn10P1 alloy blanks were prepared using an enclosed cooling slope channel (ECSC) device developed in the laboratory [12,20]. The alloy blanks used for the medium-temperature compression tests were cylindrical in size and Φ8 mm × 12 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The EDS results for points 1−4 in Figure 2b are shown in Table 1. The EDS results were compared and analyzed with the pre-existing X-ray diffraction (XRD) and TEM data [12,20] to determine the distribution of the different phases in the SEM micrographs based on the elemental content. The location of point 1 is the dark black area surrounding the white area.…”

Section: Initial State Of Alloymentioning

confidence: 99%

“…The α-Cu phase was counted and calculated using image pro plus 6.0 [8], and its average diameter was about 70 µm. The initial semi-solid CuSn10P1 alloy consists of a total of four phases: α-Cu, δ-Cu 41 Sn 11 , Cu 3 P, and β'-Cu 13.7 Sn [12,20]. The EDS results for points 1−4 in Figure 2b are shown in Table 1.…”

Section: Initial State Of Alloymentioning

confidence: 99%

“…The results showed that dynamic recrystallization easily occurred under low strain rate conditions; when the strain rate was 1 s −1 and the temperature was 450 • C, the recrystallization mechanism was dominated by continuous dynamic recrystallization. At present, studies on Cu-Sn alloys have focused on recrystallization behavior in thermal deformation [17][18][19][20], and there are fewer studies on deformation behavior at medium temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Compressive Rheological Behavior and Microstructure Evolution of a Semi-Solid CuSn10P1 Alloy at Medium Temperature and Low Strain

Liu

Zhou

Xiong

et al. 2022

Metals

Self Cite

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Copper–tin alloys are widely used in the machining and molding of sleeves, bearings, bearing housings, gears, etc. They are a material used in heavy-duty, high-speed and high-temperature situations and subject to strong friction conditions due to their high strength, high modulus of elasticity, low coefficient of friction and good wear and corrosion resistance. Although copper–tin alloys are excellent materials, a higher performance of mechanical parts is required under extreme operating conditions. Plastic deformation is an effective way to improve the overall performance of a workpiece. In this study, medium-temperature compression tests were performed on a semi-solid CuSn10P1 alloy using a Gleeble 1500D testing machine at different temperatures (350−440 °C) and strain rates (0.1−10 s−1) to obtain its medium-temperature deformation characteristics. The experimental results show that the filamentary deformation marks appearing during the deformation are not single twins or slip lines, but a mixture of dislocations, stacking faults and twins. Within the experimental parameters, the filamentary deformation marks increase with increasing strain and decrease with increasing temperature. Twinning subdivides the grains into lamellar sheets, and dislocation aggregates are found near the twinning boundaries. The results of this study are expected to make a theoretical contribution to the forming of copper–tin alloys in post-processing processes such as rolling and forging.

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Evolution behavior of δ phase in Cu12Sn2Ni alloy and the corresponding effects on alloy property

Jia

Zhang

et al. 2023

Materialwissenschaft Werkst

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With the increase of tin content in tin bronze, the rise of δ phase made the strength, hardness of tin bronze increase and the ductility decrease sharply, that difficult to process. In this paper, the Cu12Sn2Ni alloy was prepared by centrifugal casting, the microstructure and phase formation before and after heat treatment were observed by x-ray diffraction, scanning electron microscope, and transmission electron microscope. The results showed that the ascast sample microstructure was composed of equiaxed grains rather than coarse dendrites. centrifugal casting inhibits tin diffusion to form metastable phase β'-Cu 13.7 Sn. The as-cast sample had good deformability and its tensile strength and elongation were 381.9 MPa and 12.4 %, respectively, which are higher than the mechanical properties of gravity casting. The tensile strength and elongation of the sample after furnace cooling at 620 °C/8 min are 439.5 MPa and 24.4 %, respectively, the increase was 16.6 % and 85.07 %, compared with the as-cast samples, due to the solid solution strengthening, the second phase strengthening and the homogenization of the microstructure.

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The deformation compatibility and recrystallisation behaviour of the alloy CuSn10P1

Cited by 18 publications

References 24 publications

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin–Bronze Shaft Sleeve

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin–Bronze Shaft Sleeve

Compressive Rheological Behavior and Microstructure Evolution of a Semi-Solid CuSn10P1 Alloy at Medium Temperature and Low Strain

Evolution behavior of δ phase in Cu12Sn2Ni alloy and the corresponding effects on alloy property

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