Relative effects of all chemical elements on the electrical conductivity of metal and alloys: An alternative to Norbury–Linde rule

Zeng, Yingzhi; Mu, Shengjing; Wu, Ping; Ong, Khuong P.; Zeng, Jia

doi:10.1016/j.jallcom.2008.11.035

Cited by 18 publications

(8 citation statements)

References 13 publications

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“…In addition, the coarsening process of the precipitation can also lead to conductivity decreases. [34][35][36] It is revealed that the EC value slightly reduces with the increase of Zn content from 2Zn1 to 2Zn5, which indicates that the increase of the level of Zn may degrade the stress corrosion cracking resistance. Similarly TC value reduces with increasing Zn addition as shown in Fig.…”

Section: Property Analysismentioning

confidence: 99%

Modelling of the Precipitated Phases and Properties of Al-Zn-Mg-Cu Alloys

2011

J. Phase Equilib. Diffus.

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The effects of Zn and Mg variations on the precipitated phases and the properties of Al-Zn-MgCu alloys are investigated in this study. The quantities of stable and metastable phases have been calculated under various Zn and Mg contents by using software package JmatPro. The results show that the amount of the main hardening g (MgZn 2 ) phase and g¢ phase increase with higher Zn and Mg contents. T (AlCuMgZn) phase and metastable counterpart significantly increase with the reduction of Zn contents or the increase of Mg contents. S (Al 2 CuMg) phase reduces gradually with the increase of Mg content, while S phase varies only slightly with the Zn content. The precipitation of GP zones is promoted by the increase of Zn or Mg content. The physical and mechanical properties of the alloys have been modelled in such way that increasing Zn or Mg content could reduce electrical conductivity and thermal conductivity, while the mechanical properties improve with increasing Zn content and varies markedly as Mg content changes from 2.7 to 2.9 wt.%.

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Section: Property Analysismentioning

confidence: 99%

Modelling of the Precipitated Phases and Properties of Al-Zn-Mg-Cu Alloys

2011

J. Phase Equilib. Diffus.

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“…In the as-cast state, the 3003_0.2Cd alloy has a lower hardness but a higher EC value than the 3003 alloy. It is known that the solute Mn has an influence of decreasing the EC value of Al alloy [38], and Cd has the same effect but to a much lesser extent [62]. Therefore, the lower hardness but higher EC value of the 3003_0.2Cd alloy is most likely to be correlated with a lower content of Mn in solid solution.…”

Section: Vickers Hardness and Electrical Conductivitymentioning

confidence: 98%

Enhanced dispersoid precipitation and dispersion strengthening in an Al alloy by microalloying with Cd

et al. 2018

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The dispersion hardening effect of Mn(Fe)-containing dispersoids in aluminium alloys has long been ignored since it is difficult to achieve a high number density of fine dispersoids with conventional alloying compositions. This work demonstrates a minor addition of Cd (0.05 at.%) can dramatically enhance the precipitation of α-Al(Mn,Fe)Si dispersoids and therefore the dispersion strengthening of AA3003 alloy. Similar to the 3003 base alloy, a peak hardness in the Cd-containing alloy was obtained after continuous heating to 450 °C. However, an improvement in yield strength by 25% was achieved by the Cd addition. Detailed transmission electron microscopy (TEM) and atom probe tomography (APT) investigations show that the Cd addition has changed the nucleation behaviour of α-Al(Mn,Fe)Si dispersoids from the conventional heterogeneous nucleation on dislocations to a more homogeneous manner. It is found that a high number density of Al-Cd nanoprecipitates formed during heating between 150 and 250 °C. These Al-Cd precipitates attracted Mn and Si atoms to form Mn,Si-rich clusters in/around them, which acted as the precursors for the later nucleation of α-Al(Mn,Fe)Si dispersoids at ~300 °C. As a result, the number density of dispersoids formed in the Cdcontaining alloy after heating to 350-450 °C is about twice as that in the base alloy subjected 2 to the same heat treatment. This work proposes a new approach to enhance the nucleation of α-Al(Mn,Fe)Si dispersoids, which can help to further develop cheap Mn(Fe)-containing dispersoid-strengthened aluminium alloys for high-temperature applications.

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“…There are two main reasons why researchers focus on the Cu-Mg system alloy, one is that Mg affects weakly on the electrical conductivity of Cu [76], and the other reason is Mg can provide several degree of freedom to generate microstructures (driving forces for precipitation, eutectic transformation) in contract with Cu-Cr and Cu-Ag. Studies of Cu-…”

Section: Cu-mg Systemmentioning

confidence: 99%

High strength and high conductivity Cu alloys: A review

Yang

Lei

et al. 2020

Sci. China Technol. Sci.

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High strength and high conductivity (HSHC) Cu alloys are widely used in many fields, such as high-speed electric railway contact wires and integrated circuit lead frames. Pure Cu is well known to have excellent electrical conductivity but rather low strength. The main concern of HSHC Cu alloys is how to strengthen the alloy efficiently. However, when the Cu alloys are strengthened by a certain method, their electrical conductivity will inevitably decrease to a certain extent. This review introduces the strengthening methods of HSHC Cu alloys. Then the research progress of some typical HSHC Cu alloys such as Cu-Cr-Zr, Cu-Ni-Si, Cu-Ag, Cu-Mg is reviewed according to different alloy systems. Finally, the development trend of HSHC Cu alloys is forecasted. It is pointed out that precipitation and micro-alloying are effective ways to improve the performance of HSHC Cu alloys. At the same time, the production of HSHC Cu alloys also needs to comply with the large-scale, low-cost development trend of industrialization in the future.

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Relative effects of all chemical elements on the electrical conductivity of metal and alloys: An alternative to Norbury–Linde rule

Cited by 18 publications

References 13 publications

Modelling of the Precipitated Phases and Properties of Al-Zn-Mg-Cu Alloys

Modelling of the Precipitated Phases and Properties of Al-Zn-Mg-Cu Alloys

Enhanced dispersoid precipitation and dispersion strengthening in an Al alloy by microalloying with Cd

High strength and high conductivity Cu alloys: A review

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