Relationship between Microstructure and Properties of Cu-Cr-Ag-(Ce) Alloy Using Microscopic Investigation

Chen, Huiming; Yuan, Dawei; Wu, Shanjiang; Wang, Hang; Xie, Wei; Yang, Bin

doi:10.1155/2017/4646581

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…Moreover, the precipitated second phase will not stop growing. Thus, it can destroy the coherence phenomenon of the matrix, and the microhardness is inevitably declined when the aging time prolonged from 2 to 8 h [20,31].…”

Section: Effect Of Aging On Properties Of Alloymentioning

confidence: 99%

“…But it is considered that trace Ag exists in the matrix in the form of solid soluble copper, which has not been explained and proved. Chen et al [31] prepared Cu-Ag-Cr (Ce) alloy by means of medium frequency induction furnace and studied the microstructure of Cu-Cr-Ag alloy under different treatment conditions. The addition of Ce element makes the electric conductivity of the alloy reach 93±0.1% IACS after 4 h of insulation at 823 K. Alloy grain refinement's is not an important factor affecting the properties of the alloy.…”

Section: Introductionmentioning

confidence: 99%

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Effect of aging on properties and nanoscale precipitates of Cu-Ag-Cr alloy

Zhou

Song

Hui

et al. 2020

Nanotechnology Reviews

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AbstractIn this paper, the Cu-0.52Ag-0.22Cr alloy was prepared by hot horizontal continuous casting. The effects of aging process on micro-hardness, electrical conductivity, and nanoscale precipitates of Cu-0.52Ag-0.22Cr alloy were studied. The electrical conductivity and micro-hardness increase significantly in the early aging time. With the extension of aging time, the electrical conductivity is basically unchanged and remains at a high level. While, the micro-hardness increases slowly, the change trend is different at 623 K, 723 K, and 773 K. The optimisation of process parameters occurs in 723 K for 2 h. At this time, the electric conductivity is 95.8% IACS and the hardness is 104.1 HV0.1. The XRD result shows that the Ag and Cr are precipitated in elemental form copper matrix. Further TEM shows that, Cr exists at the sub-boundary in the form of larger nanoscale precipitates (100-200 nm). While a large number of Ag nanoscale precipitates (8-10 nm) is dispersed on the copper matrix. The synergistic effect of Ag and Cr nanoscale precipitates significantly improved the properties of the alloy.

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Section: Effect Of Aging On Properties Of Alloymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of aging on properties and nanoscale precipitates of Cu-Ag-Cr alloy

Zhou

Song

Hui

et al. 2020

Nanotechnology Reviews

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“…Hence, the Cu-Cr-In alloy has good application prospects. Adding a small amount of rare earth elements can significantly improve the properties of the alloy, therefore, it is widely used in steel and copper alloys [16,17]. Rdzawski et al [18] found that rare earth elements can refine the grains and improve the mechanical properties of the Cu-Ag alloy.…”

Section: Introductionmentioning

confidence: 99%

“…Rdzawski et al [18] found that rare earth elements can refine the grains and improve the mechanical properties of the Cu-Ag alloy. Chen et al [17] also found that adding Ce to Cu-Cr-Ag can reduce the amounts of detrimental impurities in the alloy, such as O and S. After adding 0.089 wt% La to pure copper, the strength of the alloy significantly improved [19]. Furthermore, the addition of rare earth elements led to the formation of rare earth compounds in the Cu-Cr-Zr-Mg-Si alloy, which could pin dislocations and hinder their movement [20].…”

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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“…In recent years, many kinds of cast Al alloys have been used in the engineering field due to their high fluidity, low casting shrinkage rate, good corrosion resistance, and relatively high strength [1–3]. Since the eutectic Al-Si and Al-Cu phases are favorable to the alloy's strength and the subsequent heat treatment process, they have been widely applied in the structural parts of the aerospace and auto industries [4, 5].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Microstructures and Tensile Properties of Recycled Al-Si-Cu-Fe-Mn Alloys with Individual and Combined Addition of Titanium and Cerium

et al. 2018

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Individual and combined addition of Ti and Ce on the recycled Al-Si-Cu-Fe-Mn alloy was conducted. The microstructures and tensile properties of these fabricated alloys were investigated. In the case of Ti or Ce which was individually added, the added amount was ranging from 0.03 wt.% to 0.09 wt.%. The combined addition of Ti and Ce was set at the ratios of 1 : 1, 1 : 3, and 3 : 1 with a total amount of 0.12 wt.%. Microstructures and phases of these alloys were investigated by using an optical microscope, X-ray diffraction testing, and SEM coupled with EDS. The morphologies of these alloys were quantified by analyzing the SDAS value, length of secondary phases, and phases' distribution uniformity. Tensile testing was carried out for understanding the strengthen effect of the modification process. Results show that the addition of Ce was favorable to the strength and % elongation because the coarse needle-like phase and the polyhedral phase were effectively refined. Their SDAS values and distribution factor were remarkably declined with the increase of the Ce level. The Ti addition could also refine the secondary phases and SDAS values. But its effect was not as prominent as the addition of Ce. Combined addition of Ti and Ce elements at the ratio of 1 : 3 resulted in the samples reaching maximum comprehensive tensile properties. In this case, the short needle-like phase was uniformly distributed in the microstructure. Few polyhedral phases could be found in the Al-Si-Cu-Fe-Mn matrix. The strengthening of these fabricated materials was due to the grain refinement for α-Al and modification for coarse secondary phases. In addition, distribution uniformity of secondary phases was also changed by their modification effects.

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Relationship between Microstructure and Properties of Cu-Cr-Ag-(Ce) Alloy Using Microscopic Investigation

Cited by 6 publications

References 17 publications

Effect of aging on properties and nanoscale precipitates of Cu-Ag-Cr alloy

Effect of aging on properties and nanoscale precipitates of Cu-Ag-Cr alloy

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

Characterization of Microstructures and Tensile Properties of Recycled Al-Si-Cu-Fe-Mn Alloys with Individual and Combined Addition of Titanium and Cerium

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