Effect of Ce addition on the microstructure and properties of Al-Cu-Mn-Mg-Fe lithium battery shell alloy

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

doi:10.1016/j.matchar.2018.05.049

Cited by 30 publications

(13 citation statements)

References 26 publications

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“…It could be further confirmed as Al 6 (Fe,Mn) with a prototype of Al 6 Mn by SAED. In the 5182-0.4Ce Al alloy, the presence of the Al 4 (Ce,La) phase with a prototype of Al 4 Ce was confirmed by EDS and SAED (Figure 4c), which was consistent with previous research results [3,19,20]. The microstructure evolutions of Mg 2 Si, Al 6 (Mn, Fe), and Al 4 (Ce,La) in the as-cast, homogenized annealed, and cold-rolled 5182 Al alloys, before and after Ce-modification, were observed (as shown in Figure 5).…”

Section: Microstructure Evolutionsupporting

confidence: 91%

“…However, the increasingly strict standards of lightweight automotive technology highly require the mechanical strength of alloys [2]. A number of investigations have achieved the goal of improving alloy strength in the as-cast 5182 aluminum alloy through the microalloying [3][4][5][6][7][8][9][10][11][12] and laser sintering methods [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Their study showed that adding Zn could influence the precipitate distribution and improve the UTS and EL values of the cast alloy. Du et al [3] studied the influence of Ce addition on the microstructure and properties of a Al-Cu-Mn-Mg-Fe lithium battery shell alloy and found that Al 6 (Mn, Fe) precipitates could be remarkably refined by adding Ce. Medvedev et al [16] studied the effect of La on the microstructure and mechanical properties of the 6xxx series type aluminum alloy and found that lanthanum inhibited the formation of the AlFeSi phase and reduced the grain size in as-cast alloys.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Ce-Rich Mischmetal on Microstructure Evolution and Mechanical Properties of 5182 Aluminum Alloy

et al. 2019

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This paper addresses the effects of Ce-rich mischmetal on the microstructure evolution of a 5182 aluminum alloy during annealing and rolling processes. The Ce-rich mischmetal was added to an as-cast 5182 aluminum alloy in an induction furnace, and this was followed by homogenized annealing at 450 °C for 24 h and a rolling operation. The microstructure evolution and mechanical properties’ analysis of the 5182 Al alloy were characterized. The results show that the Ce-rich mischmetal could modify the microstructure, refine the α-Al grains, break the network distribution of Mg2Si phases, and prevent Cr and Si atoms from diffusing into the Al6(Mn, Fe) phase in the as-cast 5182 Al alloys. Ce-rich mischmetal elements were also found to refine the Al6(Mn, Fe) phase after cold rolling. Then, the refined Al6(Mn, Fe) particles inhibited the growth of recrystallization grains to refine them from 10.01 to 7.18 μm after cold rolling. Consequently, the tensile strength of the cold-rolled 5182 Al alloy increased from 414.65 to 454.34 MPa through cell-size strengthening, dislocation density strengthening, and particle strengthening. The tensile strength of the recrystallization annealed 5182 Al alloy was increased from 322.16 to 342.73 MPa through grain refinement strengthening, and this alloy was more stable after the recrystallization annealing temperature.

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Section: Microstructure Evolutionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Ce-Rich Mischmetal on Microstructure Evolution and Mechanical Properties of 5182 Aluminum Alloy

et al. 2019

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“…First, the AlFeSi phase nucleated on the surface of the AlFeLa phase during solidification and then the AlFeSi phase grew along the surface of the AlFeLa phase. The AlFeSi phase grew around AlFeLa phase to form the core/shell structure similar to the core/shell structure of Ce-containing aluminum alloys [19]. As a result, the growth of the AlFeLa phase could be suppressed and the size of the precipitate could be refined in the Si-containing alloy.…”

Section: Methodsmentioning

confidence: 93%

Effect of Si Addition on Mechanical and Electrochemical Properties of Al-Fe-Cu-La Alloy for Current Collector of Lithium Battery

Ding

Yang

et al. 2019

Metals

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The increasing demand for high-performance current collectors of lithium ion secondary batteries requires that the employed aluminum alloys have better mechanical properties and superior electrochemical performance. The effect of Si addition on the microstructure, tensile and electrochemical performance of Al-Fe-Cu-La alloy was investigated by optical microscopy, X-ray diffraction, scanning electron microscopy, a tensile test, conductivity test and Tafel polarization curve test. Experimental results indicated that Si addition to the Al-Fe-Cu-La alloy helped to refine the longitudinal grain size of the alloy. The Si-containing phase (AlFeSi) nucleated and grew along the surface of the AlFeLa phase. The Si addition to the Al-Fe-Cu-La alloy could greatly increase the tensile strength in the temperature range of −20 °C to 50 °C and improve high temperature stability of the alloy. Also, the addition of Si promoted the formation of the AlFeSi ternary phase, which helped to improve the corrosion resistance of the alloy.

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“…Mn is then added to the alloys to modify the morphology of Fe-rich intermetallic compounds [7]. Recent research has also reported that the addition of Ce to Al alloys can refine Fe-rich intermetallic compounds, leading to an improvement in strength [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cooling Rate on Microstructure and Mechanical Properties of Sand-Casted Al–5.0Mg–0.6Mn–0.25Ce Alloy

Tang

Wang

Lei

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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This study examines the relationship among cooling rate, microstructure and mechanical properties of a sand-casted Al-5.0Mg-0.6Mn-0.25Ce (wt%) alloy subjected to T4 heat treatment (430 °C × 12 h + natural aging for 5 days), and the tested alloys with wall thickness varying from 5 to 50 mm were prepared. The results show that as the cooling rate increases from 0.22 to 7.65 K/s, the average secondary dendritic arm spacing (SDAS, λ 2 ) decreases from 94.8 to 27.3 μm. The relation between SDAS and cooling rate can be expressed by an equation: 2 = 53.0R −0.345 c . Additionally, an increase in cooling rate was shown not only to reduce the amount of the secondary phases, but also to promote the transition from Al 10 Mn 2 Ce to α-Al 24 (Mn,Fe) 6 Si 2 phase. Tensile tests show that as the cooling rate increases from 0.22 to 7.65 K/s, the ultimate tensile strength (UTS) increases from 146.3 to 241.0 MPa and the elongation (EL) increases sharply from 4.4 to 12.2% for the ascast alloys. Relations of UTS and EL with SDAS were determined, and both the UTS and EL increase linearly with (1/λ 2 ) 0.5 and that these changes can be explained by strengthening mechanisms. Most eutectic Al 3 Mg 2 phases were dissolved during T4 treatment, which in turn further improve the YS, UTS and EL. However, the increment percent of YS, UTS and EL is affected by the cooling rate.

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Effect of Ce addition on the microstructure and properties of Al-Cu-Mn-Mg-Fe lithium battery shell alloy

Cited by 30 publications

References 26 publications

Effects of Ce-Rich Mischmetal on Microstructure Evolution and Mechanical Properties of 5182 Aluminum Alloy

Effects of Ce-Rich Mischmetal on Microstructure Evolution and Mechanical Properties of 5182 Aluminum Alloy

Effect of Si Addition on Mechanical and Electrochemical Properties of Al-Fe-Cu-La Alloy for Current Collector of Lithium Battery

Effect of Cooling Rate on Microstructure and Mechanical Properties of Sand-Casted Al–5.0Mg–0.6Mn–0.25Ce Alloy

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