Precipitated phase characteristics and fracture behaviour of cast Al–Cu–Mn alloy

Zhang, Fan; Shi, Dongjin; He, Ziyu; Wang, Xiao; Li, Lü; Zhi-Ming, Zhan; Yuan, Zhentao

doi:10.1016/j.jmrt.2023.06.138

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…In general, after appropriate heat treatment, cast alloys can only be used as structural materials [4]. Therefore, alloys with different combinations of RE additions were T6 heattreated.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Unlike deformable aluminum alloys, the properties of as-cast Al-Cu-Mn alloys are highly dependent on the melting and casting processes. During the casting process, casting defects (such as hot cracks and shrinkage cavities) are inevitable to form, which limits their widespread application [3,4]. Therefore, improving their castability is particularly important to improve the microstructure and mechanical properties of as-cast Al-Cu-Mn alloys.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys

Zhang,

Wu,

et al. 2023

Materials

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In this study, the effects of the combined addition of CeLa and GdY on the microstructure and mechanical properties of as-cast Al-4Cu-1Mn alloys were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and tensile testing. The results show that the minor addition of CeLa and GdY leads to a refinement of grain size. The addition of CeLa results in the formation of supersaturated vacancies in the Al matrix, whereas the addition of GdY leads to a decrease in the precipitation temperature of the Al2Cu phase. The combined CeLa and GdY additions can significantly increase ultimate tensile strength (UTS) while losing only a small amount of elongation (EL). Compared with the unmodified alloy, the grain size and SDAS of the alloy (0.2 wt.% CeLa + 0.1 wt.% GdY) were diminished by 67.2% and 58.7%, respectively, while maximum hardness and UTS rose by 31.2% and 36.9%, respectively.

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“…In general, after appropriate heat treatment, cast alloys can only be used as structural materials [4]. Therefore, alloys with different combinations of RE additions were T6 heattreated.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%