Mechanical properties as a function of microstructure in the new Mg–Al–Ca–La alloy solidified under different conditions

Ferri, Thiago V.; Figueiredo, Arlan Pacheco; Ferreira, Carlos Roberto; Hormaza, W.; Santos, Carlos Alexandre dos; Spim, Jaime Alvares

doi:10.1016/j.msea.2010.03.041

Cited by 14 publications

(5 citation statements)

References 22 publications

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“…The second reaction at 605 C is associated to the Al 11 La 3 phase, and the third and fourth reactions, that occur at 526 C and 512 C, respectively, are related to the a-Mg þ Al 2 Ca and a-Mg þ Mg 2 Ca eutectic formations [4,5,21]. The last transformation at 401 C is related to the solid-state transformation that occurs below the Solidus temperature, and is probably due to the Al-Ca compounds formation.…”

Section: Resultsmentioning

confidence: 99%

“…The precipitate and the eutectic structures are both predominantly formed in the interdendritic regions. In the case of the Al 11 La 3 , the needles can also be formed into the dendrites and growth across the interdendritic regions [21]. When analyzing the microstructures in ternary and quaternary Mg-based alloy systems with Ca and La additions, the results agree with those reported in the literature [1,21] Recently, Liu et al [24] have investigated the Al 2 Ca phase in a Mg-Al-Ca-Mn alloy using the TEM analysis, and they observed two kinds of morphologies, a plate-shaped and a cone-shaped with respect to the a-Mg matrix.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of solid fraction on microstructures and mechanical properties of a Mg-Al-La-Ca alloy processed by rheocasting

Bartex

Santos

Barcellos

et al. 2019

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of solid fraction on microstructures and mechanical properties of a Mg-Al-La-Ca alloy processed by rheocasting

Bartex

Santos

Barcellos

et al. 2019

Journal of Alloys and Compounds

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“…Many studies have shown that the microstructure of Mg–Gd alloy has a great influence on the properties of the as‐cast alloy, as well as the properties of the alloy after heat treatment . Some researchers have found that cooling rate has a significant effect on the microstructure and mechanical properties of the alloy …”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Cooling Rate on the Secondary Phase in As‐Cast Mg–Gd–Y–Zr Alloy

Wang

Xiao³

et al. 2017

Adv Eng Mater

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The effect of cooling rate on the composition, morphology, size, and volume fraction of the secondary phase in as-cast Mg-Gd-Y-Zr alloy is investigated. In the study, a casting containing five steps with thickness of 10-50 mm is produced, in which cooling rate ranging from 2.6 to 11.0 K s À1 is created. The secondary phase is characterized using optical microscope (OM), scanning electron microscope (SEM), and electron probe micro-analyzer (EPMA). The volume fraction of the secondary phase is determined using OM and quantitative metallographic analysis, and Vickers hardness test is conducted to verify the analysis results. The effect of the cooling rate on the volume fraction of the secondary phase is discussed in detail. The result shows that with the increase of the cooling rate, the size of the secondary phase decreases. The effect of the cooling rate on the volume fraction of the secondary phase is complicated somewhat. A comprehensive analysis on the experimental data shows that a critical cooling rate may exist, over which the volume fraction of the secondary phase decreases with the increase of the cooling rate, however under which the volume fraction increases with the increase of the cooling rate.

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“…Ferri et al [15] investigated the effect of solidification rates on mechanical properties of ZAXLa05413 alloy and observed a direct relationship between grain size and secondary dendritic arm spacing with improved mechanical properties. Zheng et al [16] reported superior creep and other mechanical properties of the Mg-3Sm-0.5Zn-0.4Zr (wt.%) alloy in die-cast condition.…”

Section: Introductionmentioning

confidence: 99%

Correlation of microstructure and creep behaviour of MRI230D Mg alloy developed by two different casting technologies

Mondal

Kesavan

Reddy

et al. 2015

Materials Science and Engineering: A

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The relationship between the as-cast microstructure and creep behaviour of the heat-resistant MRI230D Mg alloy produced by two different casting technologies is investigated. The alloy in both ingot-casting (IC) and high pressure die-casting (HPDC) conditions consists of α-Mg, C36 ((Mg,Al) 2 Ca), Al-Mn and Sn-Mg-Ca rich phases. However, the HPDC alloy resulted in relatively finer grain size and higher volume fraction of finer, denser network of eutectic C36 phase in the as-cast microstructure as compared to that of the IC alloy. The superior creep resistance exhibited by the HPDC alloy at all the stress levels and temperatures employed in the present investigation was attributed to the more effective dispersion strengthening effect caused by the presence of finer and denser network of the C36 phase. The increased amount of the eutectic C36 phase was the only change observed in the microstructures of both alloys following creep tests.

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Mechanical properties as a function of microstructure in the new Mg–Al–Ca–La alloy solidified under different conditions

Cited by 14 publications

References 22 publications

Effect of solid fraction on microstructures and mechanical properties of a Mg-Al-La-Ca alloy processed by rheocasting

Effect of solid fraction on microstructures and mechanical properties of a Mg-Al-La-Ca alloy processed by rheocasting

Experimental Study on the Effect of Cooling Rate on the Secondary Phase in As‐Cast Mg–Gd–Y–Zr Alloy

Correlation of microstructure and creep behaviour of MRI230D Mg alloy developed by two different casting technologies

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