Microstructural characterization and mechanical properties of a Mg–6Zn–3Sn–2Al alloy

Chen, Jihua; Chen, Zhenhua; Yan, Hongge; Zhang, Fuquan

doi:10.1016/j.jallcom.2007.11.118

Cited by 14 publications

(14 citation statements)

References 15 publications

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“…12 Effects of Sn and Ca additions on the as-cast Mg-Zn-Al-based alloy 935 alloys. Since most of the XRD peaks of a-Mg and MgZn 2 were superposed, it was difficult to clarify from the XRD patterns whether MgZn 2 existed or not in the alloys studied [18]. The Ca content was so less that, even if the intermetallic phase consisting of Ca formed in the alloy, it would not be detectable by XRD.…”

Section: Structurementioning

confidence: 97%

Effects of Sn and Ca additions on microstructure, mechanical properties, and corrosion resistance of the as‐cast Mg‐Zn‐Al‐based alloy

Chen

Yan

et al. 2008

Materials & Corrosion

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Effects of Sn and Ca additions on microstructure, mechanical properties, and corrosion resistance of the as-cast Mg-6Zn-2Al-based alloy were investigated by SEM, XRD, tensile tests, electrochemical measurements, etc. The higher the Sn content, the higher the yield strength of the Mg-6Zn-2Al-based alloy. Trace Ca addition refined both grains and divorced eutectics in the Mg-Zn-Sn-Al alloys, leading to the best combination of strength and plasticity. Moreover, its influence was more significant for the alloy with a higher Sn content. Furthermore, the combined addition had a beneficial effect on the corrosion resistance improvement of the Mg-6Zn-2Al alloy. The Mg-6Zn-2Al-3Sn-0.2Ca alloy was the most corrosion-resistant alloy among the nine alloys studied, better than AZ91 and ZA85. It could be ascribed to the decrease and the refinement of divorced eutectics, the higher hydrogen overvoltage of Sn and the Ca grain refinement.

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Section: Structurementioning

confidence: 97%

Effects of Sn and Ca additions on microstructure, mechanical properties, and corrosion resistance of the as‐cast Mg‐Zn‐Al‐based alloy

Chen

Yan

et al. 2008

Materials & Corrosion

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“…1 17) Since the difference between Mg and Sn is the largest among the binary systems, the Mg-Sn compound was preferred to be formed in the Mg-Sn-Al-Zn system. It is consistent with the Mg-Zn-Al, Mg-Zn-Sn and Mg-Al-Sn ternary equilibrium phase diagrams.…”

Section: Microstructurementioning

confidence: 99%

Microstructure and Corrosion Properties of Mg-<I>x</I>Sn-5Al-1Zn (<I>x</I>=0, 1, 5 and 9 mass%) Alloys

et al. 2010

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In the present work, the corrosion properties of Mg-xSn-5Al-1Zn (x ¼ 0, 1, 5 and 9 mass%) alloys have been investigated. Potentiodynamic polarization and immersion tests were carried out in 3.5% NaCl solution of pH 7.2 at room temperature to measure the corrosion properties of Mg-xSn-5Al-1Zn (x ¼ 0, 1, 5, and 9 mass%) alloys. Microstrucral analysis shows the Mg 17 Al 12 and Mg 2 Sn phase were mainly precipitated along grain boundaries. With increase of the Sn contents, the volume fraction of the secondary phases, i.e. Mg 17 Al 12 and Mg 2 Sn phase, was increased. The corrosion resistance of Mg-xSn-5Al-1Zn alloys was improved by the Sn addition. Especially, the AZ51-5 mass%Sn alloy characterized the superior corrosion resistance in the studied alloys. It seems that the presence of Sn stabilized the Mg(OH) 2 layers on the surface of Mg alloys and the secondary phases effectively formed semi-continuous structures, resulting in a drastic improvement of corrosion resistance of the Mg alloys.

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“…However, the thermal diffusivity values of the ZT53 and ZT55 alloys at elevated temperatures are very similar with only a 0.38 mm 2 /s difference between them since most of the Sn is precipitated in the MgZn 2 phase. The density of the ZT51, ZT53, and ZT55 alloys at 298 K is 1.83, 1.87, and 1.88 g/cm 3 , respectively. The heat capacity of the alloys is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…8) The densities of Mg-1, 3, and 5Sn alloys at room temperature are measured as 1.75, 1.78, and 1.80 g/cm 3 , respectively, and these values are used to calculate thermal conductivity at all temperatures. From the results of the density, heat capacity, and thermal diffusivity of the alloys, the thermal conductivity (k = µ © C P © D) of the alloys are calculated with the temperature range of 298 to 573 K and shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Sn on Thermal Conductivity of Mg-5Zn Based Alloys

2015

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For the enhancement of high temperature performance of the Mg-Zn based alloys, Sn element has been alloyed. However, the effect of Sn on the thermal conductivity of the Mg-Zn based alloys has been barely studied. In this study, pure Mg and Mg-5Zn alloys are alloyed with a 1, 3, and 5 mass% of Sn, respectively, and the heat capacity, thermal diffusivity and thermal conductivity of the alloys are then evaluated in a temperature range of 298 to 573 K. In the Mg-Sn binary alloys, the heat capacity and thermal diffusivity gradually decrease with increasing the volume fraction of the Mg 2 Sn phase. In the Mg-Zn-Sn based alloys (ZT alloy), since the adding Sn element is mostly located at the MgZn 2 phases, thermal diffusivity is not affected with an increment of Sn content. Furthermore, the thermal conductivity of the ZT55 alloy at elevated temperatures is slightly higher than that of the ZT53 alloys.

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Microstructural characterization and mechanical properties of a Mg–6Zn–3Sn–2Al alloy

Cited by 14 publications

References 15 publications

Effects of Sn and Ca additions on microstructure, mechanical properties, and corrosion resistance of the as‐cast Mg‐Zn‐Al‐based alloy

Effects of Sn and Ca additions on microstructure, mechanical properties, and corrosion resistance of the as‐cast Mg‐Zn‐Al‐based alloy

Microstructure and Corrosion Properties of Mg-<I>x</I>Sn-5Al-1Zn (<I>x</I>=0, 1, 5 and 9 mass%) Alloys

Effect of Sn on Thermal Conductivity of Mg-5Zn Based Alloys

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