Synergistic Effect of RE (La, Er, Y, Ce) and Al-5Ti-B on the Microstructure and Mechanical Properties of 6111Aluminum Alloy

Meng, Chuanchao; Su, Changchao; Liu, Zhenkuan; Liao, Dongxing; Rong, Xincheng; Li, Yuanzhuo; Tang, Hongqun; Wang, Junsheng

doi:10.3390/met13030606

Cited by 7 publications

(3 citation statements)

References 35 publications

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“…When CeLa is added alone, the alloy grain size decreases, and the refined grains with more boundaries hinder crack extension. The grain refinement and strengthening improve the mechanical properties of the alloy [44]. When GdY is added alone, the reticulated AlCuMnGdY phases formed along the grain boundaries in the alloy pin the grain boundaries and form high-density dislocation zones that hinder dislocation movement.…”

Section: Discussionmentioning

confidence: 99%

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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Section: Discussionmentioning

confidence: 99%

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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“…Moreover, the Ce element is the surface active substance that improves the wettability of the aluminum melt to the second phase [33]. Due to its unique electronic structure and electronegativity difference, the Ce element has a strong affinity with an oxygen atom (Ce 1.12, Al 1.61, O 3.44, Pauling scale), which easily breaks the oxide film barrier and provides favorable interface conditions for the reaction between C and Al [34][35][36][37]. However, the combination of rare earth elements and Al-Ti-based grain refiners to prepare new high-efficiency grain refiners has seldom been studied.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Refined A356 Alloy in Response to Continuous Rheological Extruded Al-5Ti-0.6C-1.0Ce Alloy Prepared at Different Temperatures

Teng

Zhang

et al. 2023

Metals

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The microstructure is an important factor determining the mechanical properties of A356 alloy. In this experiment, the refiner Al-5Ti-0.6C-1.0Ce master alloys under different preparation temperatures were prepared, and the A356 alloy was refined. The effects of preparation temperature on the number and morphological distribution of each phase in Al-Ti-C-Ce master alloy and the effects of Al-Ti-C-Ce master alloy at different preparation temperatures on the microstructure and mechanical properties of A356 alloy were explored successively. Results showed that, as preparation temperature increased from 850 to 1150 °C, TiAl3 changed from large blocks to long strips and a needle-like phase, and Ti2Al20Ce changed from a bright white block to a broken small block phase. Al-5Ti-0.6C-1.0Ce prepared at 1050 °C can significantly refine the α-Al of A356 alloy and modify eutectic Si. The α-Al grain size was refined from about 1540 to 179.7 μm, and the eutectic Si length was refined from about 22.3 to 17.8 μm with the transition from a coarse needle-like to a short rod-like structure. The ultimate tensile strength and elongation of A356 alloy changed non-monotonically, and the peak values were 282.216 MPa and 3.9% with the Al-Ti-C-Ce preparation temperature of 1050 °C and 950 °C, respectively.

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“…Numerous studies also show the possibility of refining the microstructure of hypoeutectic silumin and increasing its mechanical properties using the Al-Ti-B master alloy [59,60] or in combination with strontium [61][62][63] or other elements [64,65]. Studies conducted on the Al10%Si035%Mg alloy with the addition of Al1.5%Ti1.5%B and Sr showed a low effect of Sr modification and a good refining effect by the action of the Al-Ti-B master alloy [66,67]. The effect of eliminating the impact of any of the tested ingredients as improvers (modifiers and refiners) was not observed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al5TiB Master Alloy with P on Microstructure and Mechanical Properties of AlSi7Mg Alloy

Lipiński

2023

Metals

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Aluminum-silicon alloys are popular casting alloys. In its raw state, the microstructure of the hypoeutectic silumin consists of a large eutectic β phase against the background of dendritic eutectic α. Due to its large microstructure components, mainly the eutectic β phase, this alloy has low mechanical properties. The unfavorable properties of hypoeutectic silumin can be improved by changing the size and shape of the alloy’s microstructure components. There are several possibilities for controlling the microstructure and the resulting mechanical properties of the alloy. One possibility is to modify the alloy with elements and chemical compounds. This paper presents the effect of phosphorus with Al-Ti-B on the microstructure and mechanical properties of hypoeutectic silumin AlSi7Mg. The proportions of Ti to B were selected on the basis of the results presented in the literature, recognizing the optimal ratio of 5:1. The modifier was introduced into the alloy in the form of an AlTiBP master alloy with a variable content of titanium, boron, and phosphorus. Phosphorus was added at the levels of 0.1, 0.2, and 0.3% of the weight of the modified casting. As a result of the tests carried out, the modifying effect of the introduced master alloy was confirmed. A different morphology of microstructures was obtained for the different chemical compositions of the modifier. The most favorable modification effect, whose measurable parameter is the highest (out of the obtained) mechanical properties, was found for the modifier containing 0.25% Ti + 0.03% B + 0.2% P. It was also found that phosphorus, in the presence of titanium and boron, affects the microstructure and mechanical properties of hypoeutectic silumin AlSi7Mg.

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Synergistic Effect of RE (La, Er, Y, Ce) and Al-5Ti-B on the Microstructure and Mechanical Properties of 6111Aluminum Alloy

Cited by 7 publications

References 35 publications

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

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

Mechanical Properties of Refined A356 Alloy in Response to Continuous Rheological Extruded Al-5Ti-0.6C-1.0Ce Alloy Prepared at Different Temperatures

Effect of Al5TiB Master Alloy with P on Microstructure and Mechanical Properties of AlSi7Mg Alloy

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