Effect of Ca and Y additions on oxidation behavior of AZ91 alloy at elevated temperatures

Cheng, Suling; Gao, Yang; Fan, Jianfeng; Li, You-jie; Zhou, Yaohe

doi:10.1016/s1003-6326(08)60268-x

Cited by 80 publications

(33 citation statements)

References 12 publications

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“…Ca containing Mg alloys have been found to have a lower oxidation rate at high temperatures in both the solid and semi-solid state [110,111]. You et al [110] studied the oxidation of Cacontaining Mg alloys at temperature ranging from 440 C to 500 C using TGA.…”

Section: Camentioning

confidence: 99%

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Oxidation of magnesium alloys at elevated temperatures in air: A review

et al. 2016

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Highlights The oxidation behaviours of Mg alloys from low to high temperatures are reviewed. Characteristics of MgO during oxidation is discussed. Mechanisms of Mg oxidation is presented. Effect of various alloying elements is analysed. AbstractThis paper reviews (i) the oxidation of Mg alloys at elevated temperatures in air; (ii) the influence of alloying elements on the oxidation of Mg alloys; and (iii) the progress in the development of oxidation-resistant Mg alloys. Low oxidation rates have been shown by Mg alloys containing the alloying elements, Ca, Be and rare earth elements. However, these alloying elements may also decrease mechanical properties, such as ductility.

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Section: Camentioning

confidence: 99%

“…Normally, the Y addition in the Mg-Al system is limited to 0.25 wt.% [111]. Hence, it seems not practical to improve the oxidation resistance of Mg-Al alloys by alloying with Y.…”

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confidence: 99%

Oxidation of magnesium alloys at elevated temperatures in air: A review

et al. 2016

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“…For this reason, Mg-RE are considered as one of the most important candidates for powertrain applications [9]. The improved oxidation resistance of Mg-RE alloys is attributed to the improve plasticity of the formed oxide film [10] and to changes in the microstructure, such as grain refinement [11][12][13][14] and precipitation of RE-containing intermetallic compounds with high stability at elevated temperatures [14].…”

Section: Introductionmentioning

confidence: 99%

“…Studies on the high temperature behavior of Mg-Al alloys modified with RE elements are often focused on the effect of Ce or Y addition on the ignition point [10][11][12][13][14][15][16]. Given that this point is normally above 437°C and the b-Mg 17 Al 12 phase melts above this temperature [17], the beneficial effect of RE elements is often associated with the reduction of the volume fraction of b-Mg 17 Al 12 phase, caused by precipitation of Al 11 RE 3 particles with high melting point along the grain boundaries [18,19].…”

Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of AZ91D Magnesium Alloy Containing Nd or Gd

et al. 2011

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The influence of Nd and Gd additions on the evolution of microstructure, surface hardness and oxidation behavior of the extruded AZ91D magnesium alloy exposed to air was investigated in the temperature range from 290 to 410°C. The kinetics of the oxidation process was obtained from gravimetric measurements performed during 28 days. Nd and Gd formed Al-rich intermetallic compounds (Al 2 Gd, Al 2 Nd, Al-Mn-Gd and Al-Mn-Nd) and reduced the volume fraction of b-Mg 17 Al 12 phase. Surface degradation of the AZ91D alloy, with and without Gd or Nd, was negligible for temperatures below 370°C. At 410°C, the grain size and oxidation rate significantly increased, although lanthanide-containing alloys revealed lower degradation compared with the unmodified AZ91D alloy.

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“…An optional addition of yttrium could be used to reinforce this layer. [22] The next steps are thickening with SiC particles to raise the viscosity, foaming, holding, to grow bubbles until a cellular structure is formed, and cooling. With the speed of foaming reaction reduced by SiO 2 , the risk of magnesium oxidation is low and so there is no need to use a protective gas.…”

Section: Melt Foaming Methodsmentioning

confidence: 99%

Current Status and Recent Developments in Porous Magnesium Fabrication

et al. 2017

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A significant number of studies have been dedicated to the fabrication and properties of metallic foams. The most recent research is focused on metals with low weight and good mechanical properties, such as titanium, aluminum, and magnesium. Whereas the first two are already fairly well studied and already find application in industry, magnesium currently remains at the research stage. The present review covers the studies conducted on fabrication techniques, surface modifications, and properties of porous structures made of magnesium and its alloys.

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Effect of Ca and Y additions on oxidation behavior of AZ91 alloy at elevated temperatures

Cited by 80 publications

References 12 publications

Oxidation of magnesium alloys at elevated temperatures in air: A review

Oxidation of magnesium alloys at elevated temperatures in air: A review

Oxidation Behavior of AZ91D Magnesium Alloy Containing Nd or Gd

Current Status and Recent Developments in Porous Magnesium Fabrication

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