Thermal and electrical conductivity of binary magnesium alloys

Pan, Hucheng; Pan, Fusheng; Yang, Ruolin; Peng, Jian; Zhao, Chaoyong; She, Jia; Gao, Zhengyuan; Tang, Aitao

doi:10.1007/s10853-013-8012-3

Cited by 127 publications

(43 citation statements)

References 40 publications

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“…According to Eivani et al [17], the thermal resistivity increment caused by the alloying element in Mg matrix is about one magnitude order larger than that in metallic compound, thus the slope of thermal conductivity tend to be larger in the alloys containing low Zn content than that with high concentration. In a recent research conducted by Pan et al [8] on the thermal conductivity of as-cast and as-solutionized binary Mg-Zn alloys with Zn content of 2-11 wt.%, the change of slope was also observed with the increasing of Zn content.…”

Section: Resultsmentioning

confidence: 80%

“…Yamasaki and Kawamura [7] measured the thermal diffusivity and thermal conductivity of Mg-Zn-rare earth (RE) alloys with long-period stacking ordered (LPSO) structure over the temperature range 298-573 K and found the LPSO phase-precipitated Mg-Zn-RE alloys exhibited higher thermal conductivity than their solution-treated counterparts due to the consumed solute elements during the formation of the LPSO phase. Pan et al [8] investigated the electrical conductivity and thermal conductivity of Mg-Zn alloys at room temperature, and the results showed both the thermal conductivity and electrical conductivity decreased with the increasing content of Zn. To clarify the effect of Zn on thermal conductivity of Mg-Zn alloys, it is essential to study the thermal conductivity of Mg-Zn binary system so that the effect of other alloying elements would be eliminated.…”

Section: Introductionmentioning

confidence: 99%

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Thermal conductivity of as-cast and as-extruded binary Mg–Zn alloys

Ying

Zheng

et al. 2015

Journal of Alloys and Compounds

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a b s t r a c tThermal conductivity of as-cast and as-extruded binary Mg-Zn alloys with Zn content from 0.5 to 5.0 wt.% was measured using laser flash method in the temperature range of 293-523 K. With the increase concentration of Zn, thermal conductivity decreased gradually in both as-cast and as-extruded Mg-Zn alloys. After extrusion, thermal conductivity of the as-extruded Mg-Zn alloys decreased and the anisotropy of thermal conductivity was observed because of the texture formed during extrusion. Compared with the previous research on thermal conductivity of binary Mg-Al alloys, the thermal conductivity was higher in Mg-Zn alloys and the reasons are discussed. The thermal conductivity of as-extruded Mg-Zn alloys in the direction perpendicular to extrusion direction was similar to that in the corresponding as-cast samples, which was due to the combined effects of defects and texture.

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Section: Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of as-cast and as-extruded binary Mg–Zn alloys

Ying

Zheng

et al. 2015

Journal of Alloys and Compounds

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“…Pan et al report in Ref. [18] for a magnesium-zirconium alloy a value of ρ measured = c · 9.311 · 10 −8 (Ωm) (25) The atomic volume difference between magnesium and zirconium is rather low, such that few lattice distortions can be expected. Furthermore the valency of zirconium (+4) is rather high.…”

Section: Semi-quantitative Comparison Of the Results To Measured mentioning

confidence: 99%

Transport in tight-binding bond percolation models

2014

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Most of the investigations to date on tight-binding, quantum percolation models focused on the quantum percolation threshold, i.e., the analogue to the Anderson transition. It appears to occur if roughly 30% of the hopping terms are actually present. Thus, models in the delocalized regime may still be substantially disordered, hence analyzing their transport properties is a nontrivial task which we pursue in the paper at hand. Using a method based on quantum typicality to numerically perform linear response theory we find that conductivity and mean free paths are in good accord with results from very simple heuristic considerations. Furthermore we find that depending on the percentage of actually present hopping terms, the transport properties may or may not be described by a Drude model. An investigation of the Einstein relation is also presented.

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“…Magnesium alloys are the lightest weight commercially available structural materials, which have high specific strength and stiffness, good thermal and electrical conductivity [1,2]. Therefore, magnesium alloys are attractive candidates for heat dissipation materials in LED etc., compared with aluminum alloys.…”

Section: Introductionmentioning

confidence: 99%