Comparison about effects of Ce, Sn and Gd additions on as-cast microstructure and mechanical properties of Mg–3.8Zn–2.2Ca (wt%) magnesium alloy

Yang, Ming‐Bo; Cheng, Liang; Pan, Fusheng

doi:10.1007/s10853-009-3696-0

Cited by 37 publications

(11 citation statements)

References 31 publications

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“…1,2 The development of new creep resistant magnesium alloys has become a major issue in recent years. 3,[6][7][8][9][10] Since Mg-Sn alloys are recently developed as the potential cheap creep resistant magnesium alloys, few investigations are available on their microstructural and mechanical responses. Sn as major alloying element was chosen due to its high solid solubility over a wide temperature range and Correspondence: Y. Huang.…”

Section: Introductionmentioning

confidence: 99%

“…6 Two types of alloy systems have been developed up to now: non-aluminium Mg-Sn alloys and aluminium containing Mg-Sn alloys. 3,[6][7][8][9][10] Since Mg-Sn alloys are recently developed as the potential cheap creep resistant magnesium alloys, few investigations are available on their microstructural and mechanical responses. For the aluminium-containing Mg-Sn alloys, one alloy called TAS831 (Mg-8Sn-3Al-1Si) was developed by Kang et al 7 Due to the precipitation of Mg 2 Sn and Mg 2 Si, this alloy has a better creep resistance than AZ91 alloy.…”

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confidence: 99%

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Effects of Sn segregation and precipitates on creep response of Mg‐Sn alloys

Huang

Dieringa

Kainer

et al. 2012

Fatigue Fract Eng Mat Struct

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Mg‐Sn alloys are promising for the development of new cheap creep resistant magnesium alloys. In the present paper, the creep behaviours of Mg‐Sn and Mg‐Sn‐Ca alloys were examined at the constant temperature and different stresses. The measurements of stress exponents indicate that the dislocation climbing is the dominant mechanism during the creep of Mg‐3Sn or Mg‐3Sn‐2Ca alloys. The poor creep resistance of the binary Mg‐3Sn alloy is caused by the easy movement of dislocation and the segregation of Sn at the boundaries. Both T4 and T6 heat treatments improve the creep resistance of Mg‐3Sn alloy due to the alleviation of Sn segregation at grain boundaries and the precipitation of Mg2Sn particles, respectively. Ca is an effective alloying element to increase the creep resistance of Mg‐Sn alloys. The Ca addition leads to the formation of thermal stable phases Mg2Ca and CaMgSn in Mg‐3Sn‐Ca alloys. These two phases effectively hinder the movement of dislocations and the sliding of grain boundaries. On the other hand, the addition of Ca alleviates the segregation of Sn by the interaction of Ca with Mg and Sn to form the phase CaMgSn.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Effects of Sn segregation and precipitates on creep response of Mg‐Sn alloys

Huang

Dieringa

Kainer

et al. 2012

Fatigue Fract Eng Mat Struct

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“…Zinc is -next to aluminium -one of the most used alloying elements with the advantages, such as increase of the strength of Mg alloys, improvement of the castability [8,[13][14][15]. Besides, the addition of zinc leads to enhancement of corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of as-cast and extruded Mg-4Zn and Mg-4Zn-0.4Ca alloys

HRADILOVA¹,

VOJTĚCH²

2021

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This work studied the effect of extrusion and alloying with 4 wt.% of Zn and 0.4 wt.% of Ca on the structure and mechanical properties of magnesium. Light, scanning electron microscopy, X-ray diffraction, hardness, compressive and tensile tests were used for this purpose. The addition of zinc led to the formation of MgZn and further alloying with calcium changed the nature of the secondary phase to Ca2Mg6Zn3. The process of extrusion resulted in significant structural refinement, which was the most pronounced for the Mg-4Zn-0.4Ca alloy. In this alloy the average grain size was 6 µm. The extrusion improved all the measured characteristics and the most pronounced improvement was observed in the case of tensile yield strength. The presence of calcium improved the positive effect of zinc on the mechanical properties of magnesium. Differences in the mechanical behaviour of magnesium and its alloys were discussed in relation to structural variations resulting in different strengthening effects.K e y w o r d s : magnesium alloys, microstructure, extrusion, mechanical properties

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“…Therefore, improving the strength, and the corrosion and creep resistance at elevated temperatures has become a critical issue for possible application of magnesium alloys in hot components. In recent years, efforts have been made to develop new high strength and creep resistant magnesium alloys based on Mg-Zn-Ca system for the following reasons: [1][2][3][4][5][6] (i) Zn can enhance the age hardening response and improve the castability, and has several stable intermetallics with Mg (ii) Ca not only behaves as a grain refiner but also can improve the corrosion resistance and forms a stable Mg 2 Ca compound with Mg (iii) Zn and Ca together with Mg may form the stable intermetallic compound Ca 2 Mg 6 Zn 3 .…”

Section: Introductionmentioning

confidence: 99%

“…At present, although the microstructure and mechanical properties have been reported for some Mg-Zn-Ca alloys with a relatively high content of calcium, 2,3,[8][9][10][11] these works mainly focus on the microstructural characterisation and/or age hardening behaviour of a limited number of Mg-Zn-Ca alloys. The investigations about the improvement in strength and creep performance of ternary Mg-Zn-Ca alloys via additional alloying/microalloying are very scarce in the literature.…”

Section: Introductionmentioning

confidence: 99%

Effects of Zr addition on as cast microstructure, tensile and creep properties of Mg–3·8Zn–2·2Ca magnesium alloy

Peng

Yang

Zhu

et al. 2012

International Journal of Cast Metals Research

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The effects of Zr addition on the as cast microstructure, tensile and creep properties of Mg-3?8Zn-2?2Ca (wt-%) magnesium alloy were investigated. The results indicate that adding 0?19-0?81 wt-%Zr to the Mg-3?8Zn-2?2Ca does not cause the formation of any new phases but causes the morphology of the Ca 2 Mg 6 Zn 3 phase to change from the initial continuous and/or quasicontinuous net to the quasi-continuous and/or disconnected shapes. Furthermore, adding 0?19-0?81 wt-%Zr can effectively refine the grains of the Mg-3?8Zn-2?2Ca alloy, and an increase in Zr amount from 0?19 to 0?81 wt-% causes the grain size to gradually decrease. In addition, adding 0?19-0?81 wt-%Zr to the Mg-3?8Zn-2?2Ca alloy can improve the tensile properties but decreases the creep properties. Among these Mg-3?8Zn-2?2Ca alloys with the additions of 0?19, 0?52 and 0?81 wt-%Zr, the alloy with the addition of 0?81 wt-%Zr exhibits the relatively optimal tensile and creep properties.

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Comparison about effects of Ce, Sn and Gd additions on as-cast microstructure and mechanical properties of Mg–3.8Zn–2.2Ca (wt%) magnesium alloy

Cited by 37 publications

References 31 publications

Effects of Sn segregation and precipitates on creep response of Mg‐Sn alloys

Effects of Sn segregation and precipitates on creep response of Mg‐Sn alloys

Mechanical properties of as-cast and extruded Mg-4Zn and Mg-4Zn-0.4Ca alloys

Effects of Zr addition on as cast microstructure, tensile and creep properties of Mg–3·8Zn–2·2Ca magnesium alloy

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