Effect of CeLa addition on the microstructures and mechanical properties of Al-Cu-Mn-Mg-Fe alloy

Du, Jiandi; Ding, Dongyan; Xu, Zhenming; Zhang, Junchao; Zhang, Wenlong; Gao, Yongjin; Chen, Guozhen; Chen, Weigao; You, Xiaohua; Chen, Renzong; Huang, Yuanwei; Tang, Jinsong

doi:10.1016/j.matchar.2016.11.010

Cited by 22 publications

(9 citation statements)

References 52 publications

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“…With the more recent focus on the development of new Al-Cu based alloys for high temperature performance of automotive components, it was considered worthwhile to also investigate the effects of Ce and La rare earth metal additions to these alloys, taking into consideration low and relatively high Si levels. Putting the importance of rare earth elements into proper perspective, recently, University of Kentucky researchers have reported producing nearly pure rare earth concentrates from Kentucky coal sources [103][104][105]. The patent pending process developed by Honaker and Zhang is a low cost and environmentally friendly recovery process.…”

Section: Discussionmentioning

confidence: 99%

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Applications of Rare Earth Metals in Al-Si Cast Alloys

Mahmoud¹,

Zedan²,

Samuel³

et al. 2021

Advances in High-Entropy Alloys - Materials Research, Exotic Properties and Applications

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The present article reviews a large number of research publications on the effect of mischmetal (MM), rare earth metals (RE), La or Ce, and combinations of La + Ce on the performance of Al-Si cast alloys mainly 319, 356, 380, 413, and 390 alloys. Most of these articles focused on the use of rare earth metals as a substitute for strontium (Sr) as a eutectic silicon (Si) modifier if added in low percentage (< 1 wt.%) to avoid precipitation of a significant amount of insoluble intermetallics and hence poor mechanical properties. Other points that were considered were the affinity of RE to react with Sr., reducing its effectiveness as modifier, as well as the grain refining efficiency of the added RE in any form. None of these articles mentioned the exact composition of the RE used and percentage of tramp elements inherited from the parent ore. Using high purity La or Ce proved to have no effect on the Si shape, size or distribution, in particular at low solidification rates (thick sections). However, regardless the source of the RE, its addition to Sr-modified alloys reduced the modification effect. As for grain refining, apparently a high percentage of RE (> 1 wt.%) is required to achieve a noticeable reduction in grain size, however at the cost of alloy brittleness.

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Section: Discussionmentioning

confidence: 99%

“…[103][104][105] on the influence of 0.25 wt. % and 0.50 wt.% mixed additions of Ce and La on the microstructure and mechanical properties of an Al-Cu-Mn-Mg-Fe alloy.…”

mentioning

confidence: 99%

Applications of Rare Earth Metals in Al-Si Cast Alloys

Mahmoud¹,

Zedan²,

Samuel³

et al. 2021

Advances in High-Entropy Alloys - Materials Research, Exotic Properties and Applications

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“…At least 50 statistical samples were also randomly determined in each view field. Similarly with the relevant literatures [29, 32], the secondary dendrite arm spacing (SDAS) values and lengths of secondary phases were measured to assess the modification and refinement effects in these five view fields: trueMean length=1m∑j=1m()1n∑i=1nLij,where L i is the area and aspect ratio of an arbitrary modified secondary phase in the microstructure, n is the number of particles measured in a view field, and m is the number of the fields for quantification. In this case, the approximate SDAS values were statistically analyzed via nanomeasurement software.…”

Section: Methodsmentioning

confidence: 99%

Characterization of Microstructures and Tensile Properties of Recycled Al-Si-Cu-Fe-Mn Alloys with Individual and Combined Addition of Titanium and Cerium

et al. 2018

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Individual and combined addition of Ti and Ce on the recycled Al-Si-Cu-Fe-Mn alloy was conducted. The microstructures and tensile properties of these fabricated alloys were investigated. In the case of Ti or Ce which was individually added, the added amount was ranging from 0.03 wt.% to 0.09 wt.%. The combined addition of Ti and Ce was set at the ratios of 1 : 1, 1 : 3, and 3 : 1 with a total amount of 0.12 wt.%. Microstructures and phases of these alloys were investigated by using an optical microscope, X-ray diffraction testing, and SEM coupled with EDS. The morphologies of these alloys were quantified by analyzing the SDAS value, length of secondary phases, and phases' distribution uniformity. Tensile testing was carried out for understanding the strengthen effect of the modification process. Results show that the addition of Ce was favorable to the strength and % elongation because the coarse needle-like phase and the polyhedral phase were effectively refined. Their SDAS values and distribution factor were remarkably declined with the increase of the Ce level. The Ti addition could also refine the secondary phases and SDAS values. But its effect was not as prominent as the addition of Ce. Combined addition of Ti and Ce elements at the ratio of 1 : 3 resulted in the samples reaching maximum comprehensive tensile properties. In this case, the short needle-like phase was uniformly distributed in the microstructure. Few polyhedral phases could be found in the Al-Si-Cu-Fe-Mn matrix. The strengthening of these fabricated materials was due to the grain refinement for α-Al and modification for coarse secondary phases. In addition, distribution uniformity of secondary phases was also changed by their modification effects.

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“…It was found that the addition of La and B elements formed LaB 6 particles, which could significantly refine α-Al grains, so that the strength properties, particularly the elongation rate of the cast Al-Si alloy had been greatly improved. Du et al [17,18] studied the effect of rare earth Ce on the as-cast microstructure and properties of aluminum alloy. The Al-Cu-Mn-Mg-Fe alloy with a small amount of Ce formed dense S′ phases after room temperature aging.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce addition on microstructure, mechanical properties and corrosion behavior of Al-Cu-Mn-Mg-Fe alloy

Tian

Chen

et al. 2020

Mater. Res. Express

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The effects of rare earth Ce on the microstructure, mechanical properties and corrosion behavior of Al-Cu-Mn-Mg-Fe alloys were investigated by means of microstructure analysis, tensile test and electrochemical corrosion test. The research shows that the Al-Cu-Mn-Mg-Fe alloy after low temperature heat treatment mainly contains the S (Al 2 CuMg) phase, the T (Al 20 Cu 2 Mn 3 ) phase, the Al 6 (Mn, Fe) phase and the Al 7 Cu 2 Fe phase, and the rare earth Ce makes the alloy form the new rare earth phase Al8Cu4Ce. The appearance of this phase has a significant refinement effect on the Al 6 (Mn, Fe) phase. Compared with Ce-free, the yield strength and tensile strength of Al-Cu-Mn-Mg-Fe alloy with 0.254 ωt% Ce increased by 7% and 15%, respectively, and the elongation increased from 3.1% to 4.8%. It also has better corrosion resistance, which is represented by the decrease of corrosion current density and positive shift of corrosion potential in Tafel measurement in solutions of different concentrations, and the increase of corrosion impedance in electrochemical impedance spectroscopy test, especially the corrosion current density was reduced by 6.06 μA cm −2 in 3.5% NaCl solution.

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Effect of CeLa addition on the microstructures and mechanical properties of Al-Cu-Mn-Mg-Fe alloy

Cited by 22 publications

References 52 publications

Applications of Rare Earth Metals in Al-Si Cast Alloys

Applications of Rare Earth Metals in Al-Si Cast Alloys

Characterization of Microstructures and Tensile Properties of Recycled Al-Si-Cu-Fe-Mn Alloys with Individual and Combined Addition of Titanium and Cerium

Effect of Ce addition on microstructure, mechanical properties and corrosion behavior of Al-Cu-Mn-Mg-Fe alloy

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