Dendrite Morphology Evolution of Al6Mn Phase in Suction Casting Al–Mn Alloys

Chen, Zhongwei; Hou, Yue; Xie, Bin; Zhang, Qi

doi:10.3390/ma13102388

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…It is easier to form porosity in the casting of 3104 aluminum alloy. In continuous casting, due to the large temperature gradient and solidification speed, it is easy to appear component supercooling to promote the growth of dendrites, which is more conducive to the formation of air hole porosity [6][7][8]. In conclusion, optimizing the casting process is a feasible method to reduce air-hole porosity.…”

Section: Resultsmentioning

confidence: 98%

Lamination Effect on Al-Mn Alloy During Can Forming

Yan

2023

J. Phys.: Conf. Ser.

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Fracture behavior of Al-Mn alloy after plastic deformation is studied by electron microscopy. Cracked can is mainly caused by the lamination of the Al-Mg alloy plate. Optimized melt treatment is the main way to solve the problem of lamination caused by microporosity. Microporosity can be eliminated by adjusting the casting speed and other technological parameters. As a result, the behavior of lamination of Al-Mn alloy during deformation is weakened. The rate of cracked cans in the process is reduced subsequently.

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Section: Resultsmentioning

confidence: 98%

Lamination Effect on Al-Mn Alloy During Can Forming

Yan

2023

J. Phys.: Conf. Ser.

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“…The I-phase area fraction within alloy peaked when the content of Ce was 1%. The phase became finely and uniformly distributed, which significantly elevated alloy hardness [ 30 , 31 ].…”

Section: Resultsmentioning

confidence: 99%

“…The I-phase area fraction within alloy peaked when the content of Ce was 1%. The phase became finely and uniformly distributed, which significantly elevated alloy hardness [30,31]. When the addition amount of Ce was 2 at%, the amount of the Al 13 Ce 2 Cu 13 phase increased.…”

Section: Thermal Expansion Propertiesmentioning

confidence: 99%

Influence of cerium content on the microstructure and thermal expansion properties of suction cast Al-Cu-Fe alloys

Wang

Yang

et al. 2021

R. Soc. open sci.

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Low-expansion alloys are of great importance and can be used for the development of new aerospace materials. Herein, we report diverse rare earth quasicrystal alloys fabricated by the vacuum suction casting process. The effects of the addition of cerium (Ce) on the microstructure, thermal expansion properties and microhardness of the Al-Cu-Fe alloy were systematically investigated. This study discovered the tiny Al-Cu-Fe-Ce microstructure. A uniform distribution could be achieved after Ce addition amount is elevated. At the Ce addition amount of 1 at%, the lowest alloy thermal expansion coefficient was obtained. The alloy exhibited the maximum microhardness under these conditions. The microhardness of alloys containing 1 at% of Ce was approximately 2.4 times higher than the microhardness exhibited by alloys devoid of Ce additives. The coefficient of thermal expansion decreases by approximately 20%. The use of the suction casting process and the addition of an appropriate amount of Ce can potentially help design and develop Al-Cu-Fe-Ce alloys.

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“…The second phase in Figure 4 may be Al 2 Cu, Al 6 Mn, and Al 3 Sc, which have been reported in relevant literature. [ 21–23 ] The results of EDS show that the Sc content in the second phase of T6 aluminum alloy is significantly higher than that in the as‐cast aluminum alloy, while the Sc content in the matrix of T6 aluminum alloy is significantly lower than that in the as‐cast aluminum alloy. According to X‐ray diffraction (XRD) results (Figure 5), this may be due to the generation of Al 0.968 Sc 0.032 (Al + Sc → Al 0.968 Sc 0.032 ) during T6 heat treatment.…”

Section: Discussionmentioning

confidence: 99%

Effect Mechanism of Sc Addition and T6 Heat Treatment on Precipitated Phase and Mechanical Properties of Al‐Cu‐Mn Alloy

Tang

Qin

et al. 2023

Physica Status Solidi (a)

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Casting Al-Cu-Mn alloy has the characteristics of low density, high specific strength, high hardness, good processability, and high-temperature performance. Therefore, it is one of the preferred lightweight structural materials and has been widely used in various fields such as aerospace, and transportation, such as aircraft rib and wing components, and automobile wheels. [1][2][3] In previous studies, adding rare earth elements such as Zr, Y, and La to Al-Cu-Mn alloys for microalloying treatment has become the main means of improving the comprehensive performance of alloys. [4][5][6] Rare earth elements can not only purify the melt and refine grain structure but also activate the aluminum alloy. However, the use of trace rare earth element Sc for aluminum alloy microalloying in the study of casting Al-Cu-Mn alloy is not common. As the working environment and green environmental requirements of materials become increasingly stringent, the application of traditional Al-Cu-Mn alloys is becoming more and more restricted. [7] Therefore, improving the comprehensive properties of Al-Cu-Mn alloys is an urgent problem to be solved.Sc is currently one of the most effective rare earth elements found to optimize the performance of aluminum alloys. Research on adding Sc to 2000 series Al-Cu alloys has been widely recognized. Wu et al. [8] found that Sc can improve the yield strength (YS) and pitting corrosion resistance of Al-2.5Cu alloys, and can promote the precipitation of θ 0 precipitates at different positions under different grain sizes. The smaller the grain size, the stronger the effect of Sc microalloying. Zhang [9] quantitatively described the effects of scandium and silver on the grain size and precipitation phase of Al-Cu alloys, as well as the contributions of grain refinement and precipitation strengthening to the YS. The results showed that the addition of Sc refined the grain size, and θ 0 precipitation increased the YS, tensile strength, and elongation (EL) of Al-Cu alloys to 314.2, 410.6 MPa, and 6.31%, respectively.In addition, adding Sc to Al-Cu alloys can form Al 3 Sc precipitate phases. The dispersed Al 3 Sc precipitates in the matrix play an important role in improving the mechanical properties of the alloy, as they can pin grain boundaries and dislocations, preventing grain slip and restricting the motion of grain boundaries, thereby significantly improving the resistance to deformation

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Dendrite Morphology Evolution of Al6Mn Phase in Suction Casting Al–Mn Alloys

Cited by 11 publications

References 34 publications

Lamination Effect on Al-Mn Alloy During Can Forming

Lamination Effect on Al-Mn Alloy During Can Forming

Influence of cerium content on the microstructure and thermal expansion properties of suction cast Al-Cu-Fe alloys

Effect Mechanism of Sc Addition and T6 Heat Treatment on Precipitated Phase and Mechanical Properties of Al‐Cu‐Mn Alloy

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