Upward Continuous Casting in the Manufacture of Cu-Cr-Ag Alloys: Potential for Enhancing Strength Whilst Maintaining Ductility

Yuan, Dawei; Yang, Bin; Chen, Jinshui; Chen, Huiming; Zhang, Jianbo; Wang, Hang

doi:10.1007/s11661-017-4338-9

Cited by 21 publications

(5 citation statements)

References 28 publications

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“…This finding indicates that significant softening occurred in the cold-drawn Cu–Cr–Ag alloy, which resulted in recovery by aging at 450°C. However, our earlier investigation showed that the ductility can be markedly improved while increasing the strength in a cold-drawn Cu–Cr–Ag alloy after aging treatment [19]. Therefore, a suitable level of cold deformation before aging improves the mechanical properties.…”

Section: Discussionmentioning

confidence: 99%

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Mechanical properties and microstructural evolution of a Cu–Cr–Ag alloy during thermomechanical treatment

Yuan

Wang

Chen

et al. 2018

Materials Science and Technology

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The microstructure and mechanical properties of a Cu–Cr–Ag alloy at the different processing stages were investigated using hardness measurements, scanning electron microscopy, and transmission electron microscopy. The combined effects of dislocation strengthening and precipitation strengthening were shown to remarkably enhance the hardness of the alloy. Coherent Cr-rich precipitates with a face-centred cubic structure, formed during aging, were shown to be the main source of age strengthening, and the introduction of pre-deformation led to acceleration of their precipitation. Nevertheless, recovery occurring during aging caused significant softening in the cold-drawn samples. Analysis of the microstructural evolution during cold drawing and aging was used as an effective tool to optimise the thermomechanical process and improve the mechanical properties.

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Section: Discussionmentioning

confidence: 99%

“…In other words, cold deformation causes significant dislocation strengthening while preserving the good electrical conductivity properties. Some cold deformation methods, such as cold rolling [18] and cold drawing [19], have received wide attention for further increasing the mechanical properties of Cu-Cr alloys.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and microstructural evolution of a Cu–Cr–Ag alloy during thermomechanical treatment

Yuan

Wang

Chen

et al. 2018

Materials Science and Technology

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“…Secondly, they were smelted in an intermediate frequency induction furnace (≤2,000 Hz) in vacuum chamber II [30]. Thirdly, the as-cast Cu-20Ag rod with a diameter (Φ) of 7.83 mm was prepared from casting mold with a speed of 150 mm/min by cooling after they were fully mixed [31]. Finally, the as-cast Cu-20Ag rod was continuously cold drawn from Φ 7.83 mm to Φ 0.02 mm.…”

Section: Experimental Processmentioning

confidence: 99%

Microstructural evolution and properties of Cu–20 wt% Ag alloy wire by multi-pass continuous drawing

Cheng

Song

Mi³

et al. 2020

Nanotechnology Reviews

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The Cu–20 wt% Ag alloy wire rod was prepared using three-chamber vacuum cold mold vertical continuous up-casting followed by multi-pass continuous drawing. The evolution of microstructure, mechanical property, and electrical property of the Cu–20 wt% Ag alloy wire during multi-pass continuous drawing was studied. After multi-pass continuous drawing, the continuous network eutectic structure in the longitudinal section of the as-casted rod was gradually drawn into long fibers that approximately parallel to the axial direction, while the space of the continuous network eutectic structure in the transverse section is getting smaller and smaller. Both the preferred orientation of copper and silver grains are (1,1,1). With the increase of drawing strain (η), the tensile strength of Cu–20 wt% Ag alloy wire gradually increases while the elongation gradually decreases. When the diameter is drawn to 0.02 mm (η = 11.94), the tensile strength of the alloy is 1,682 MPa and elongation is 2.0%. The relationship between tensile strength, elongation, and diameter conforms to Allometric and Boltzmann functions, respectively.

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“…As a typical age-hardening alloy, dispersed Cr particles precipitate from the matrix during the aging treatment and strengthen the alloy. Other elements are usually added to the Cu-Cr alloy to further improve its properties, such as Ag [6][7][8], Zr [9,10], Mg [11], In [12,13], and Sn [14]. Chen et al found that the addition of In to the Cu-Cr alloy resulted in a strong solid solution strengthening effect [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of trace La on microstructure and properties of Cu–Cr–In alloys

Xie

Zhang

Huang

et al. 2020

Mater. Res. Express

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The strength and conductivity of Cu-Cr-In alloys with trace La and different processing states were compared. Then, the influence of La on the structure and properties of the Cu-Cr-In alloy and the associated mechanisms were analyzed. The mechanical properties and microstructural evolution of the alloy were investigated via scanning electron microscopy, transmission electron microscopy, and tensile strength measurements. The results showed that the addition of 0.07wt% La to the Cu-Cr-In alloy had the effect of purifying the alloy melt and removing impurities, which improved the electrical conductivity of the alloy. However, the formation of rare earth intermetallic compounds reduced the tensile strength of the Cu-Cr-In-La alloy. After thermomechanical treatment, the Cu-Cr-In-La alloy reached a peak strength of 457 MPa and a conductivity of 85% IACS.

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Upward Continuous Casting in the Manufacture of Cu-Cr-Ag Alloys: Potential for Enhancing Strength Whilst Maintaining Ductility

Cited by 21 publications

References 28 publications

Mechanical properties and microstructural evolution of a Cu–Cr–Ag alloy during thermomechanical treatment

Mechanical properties and microstructural evolution of a Cu–Cr–Ag alloy during thermomechanical treatment

Microstructural evolution and properties of Cu–20 wt% Ag alloy wire by multi-pass continuous drawing

Effect of trace La on microstructure and properties of Cu–Cr–In alloys

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