Preparation of Mg2Si/Al–Cu composite under a novel continuous squeeze casting-extrusion process assisted with ultrasonic treatment

Li, Jianyu; Lü, Shulin; Zhao, Dijia; Chen, Lu; Pan, Yu; Guo, Wei; Wu, Shusen

doi:10.1016/j.msea.2022.144469

Cited by 14 publications

(2 citation statements)

References 34 publications

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“…Al-Li alloys typically absorb significant amounts of hydrogen during the melting and casting processes, which leads to porosity as a result of reduced solubility upon cooling. These pores act as stress concentration points and tend to promote the formation and expansion of cracks, ultimately reducing fatigue life and the tensile properties of the castings [35,36]. Reducing porosity in castings thus enhances the mechanical properties of the alloys.…”

Section: Mechanism For Change Of Properties Under Forming Processes A...mentioning

confidence: 99%

“…Refining the primary α-Al grains contributes to a reduction in the distance travelled by the solid-liquid solidification front as a result of the high solidification rate of the SC alloy. Grain refinement is also conducive to improving the distribution and morphology of the second phase while reducing compositional segregation, resulting in a significant improvement in the mechanical properties of the alloy [36].…”

Section: Mechanism For Change Of Properties Under Forming Processes A...mentioning

confidence: 99%

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Enhancement of Strength–Ductility Synergy of Al-Li Cast Alloy via New Forming Processes and Sc Addition

Lü,

Yan,

Pan

et al. 2024

Materials

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In this study, concurrent enhancements in both strength and ductility of the Al-2Li-2Cu-0.5Mg-0.2Zr cast alloy (hereafter referred to as Al-Li) were achieved through an optimized forming process comprising ultrasonic treatment followed by squeeze casting, coupled with the incorporation of Sc. Initially, the variations in the microstructure and mechanical properties of the Sc-free Al-Li cast alloy (i.e., alloy A) during various forming processes were investigated. The results revealed that the grain size in the UT+SC (ultrasonic treatment + squeeze casting) alloy was reduced by 76.3% and 57.7%, respectively, compared to those of the GC (gravity casting) or SC alloys. Additionally, significant improvements were observed in its compositional segregation and porosity reduction. After UT+SC, the ultimate tensile strength (UTS), yield strength (YS), and elongation reached 235 MPa, 135 Mpa, and 15%, respectively, which were 113.6%, 28.6%, and 1150% higher than those of the GC alloy. Subsequently, the Al-Li cast alloy containing 0.2 wt.% Sc (referred to as alloy B) exhibited even finer grains under the UT+SC process, resulting in simultaneous enhancements in its UTS, YS, and elongation. Interestingly, the product of ultimate tensile strength and elongation (i.e., UTS × EL) for both alloys reached 36 GPa•% and 42 GPa•%, respectively, which is much higher than that of other Al-Li cast alloys reported in the available literature.

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Section: Mechanism For Change Of Properties Under Forming Processes A...mentioning

confidence: 99%

Section: Mechanism For Change Of Properties Under Forming Processes A...mentioning

confidence: 99%

Enhancement of Strength–Ductility Synergy of Al-Li Cast Alloy via New Forming Processes and Sc Addition

Lü,

Yan,

Pan

et al. 2024

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Effect of Ultrasonic Treatment and Squeeze Casting on the Microstructural Refinement of Al–Cu–Mn Alloys

Zhao

Yang³

et al. 2023

Inter Metalcast

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Recent research and advances in extrusion forming of magnesium alloys: A review

Kang

et al. 2023

Journal of Alloys and Compounds

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Preparation of Mg2Si/Al–Cu composite under a novel continuous squeeze casting-extrusion process assisted with ultrasonic treatment

Cited by 14 publications

References 34 publications

Enhancement of Strength–Ductility Synergy of Al-Li Cast Alloy via New Forming Processes and Sc Addition

Enhancement of Strength–Ductility Synergy of Al-Li Cast Alloy via New Forming Processes and Sc Addition

Effect of Ultrasonic Treatment and Squeeze Casting on the Microstructural Refinement of Al–Cu–Mn Alloys

Recent research and advances in extrusion forming of magnesium alloys: A review

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