Effects of Er and Zr additions on precipitation and recrystallization of pure aluminum

Li, Hongying; Gao, Zhaohe; Yin, Hao; Jiang, Hao-Fan; Su, Xiongjie; Bin, Jie

doi:10.1016/j.scriptamat.2012.09.026

Cited by 120 publications

(56 citation statements)

References 17 publications

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“…H.Y. [34] discovered that fine Er-rich or Zr-rich second phase particle could stimulate the formation of equiaxed grains as the nucleus of heterogeneous nucleation. Compared with the welds of 5183 alloy welding wires, the sizes of axial dendrite in the fine-grained region filled with micro-alloyed welding wires are smaller and the amount of equiaxed grain was bigger locally.…”

Section: Resultsmentioning

confidence: 99%

“…It is judged to be the Al 3 (Er, Zr) particle which also has a good coherent relationship with the matrix. Because of the fairly high thermal stability of these particles, they can be preserved at the boundary of the bath as the nucleus of the heterogeneous nucleation to accelerate the formation of equiaxed grain [34,36]. Figure 11 describes the distribution of the microhardness of surface layer and bottom layer of the transverse section of welded joints filled with different welding materials.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Study on microstructures and mechanical properties of super narrow gap joints of thick and high strength aluminum alloy plates welded by fiber laser

Zhang

Dong²,

Wang³

et al. 2015

Int J Adv Manuf Technol

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The welding of thick high strength aluminum alloy plate was exceedingly difficult. Traditional arc welding was prone to softening the welded joints and involves multilayer; meanwhile, multi-pass welding may cause great residual welding stress, and deformation resulted in dampening the wide expansion of the welding structure of thick high strength aluminum alloy plates. Therefore, it was urgent to develop advanced materials and welding technologies to enhance the comprehensive mechanical properties of welded joints. Fiber laser boasted the advantages such as perfect monochromaticity and high quality light beam. In order to decrease the thermal loss of the welding heat source on the matrix, small power fiber laser and super narrow gap groove were applied for the effective welding of the 20-mm thick 7A52 aluminum alloy. The welding adopted multilayer and single pass welding with the groove width no wider than 4 mm. The weld was composed of four layers and the size was no wider than 4.5 mm, which was basically consistent with the widths of the whole. The parent metal was welded with 5183 alloy and 5E06 alloy. Fiber optical microscope, scanning electron microscope (SEM), transmission electron microscope (TEM), and tensile testing machine were employed to investigate the influence of Er-Zr microalloying aluminum alloy welding wires upon the microstructure and mechanical properties of the welded joints.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Study on microstructures and mechanical properties of super narrow gap joints of thick and high strength aluminum alloy plates welded by fiber laser

Zhang

Dong²,

Wang³

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…A recent study reports that there is a synergetic effect of Zr and Er on the precipitation hardening of Al-Er-Zr alloy [9]. Li and coworks [10] also found that the recrystallization temperature of the Al-Er-Zr alloy is significantly higher than that of Al-Er alloy, owing to the presence of nanosized and coherent Al 3 (Er,Zr) precipitates. In this paper, we focus on quaternary Al-Mg-Er-Zr alloy and investigate the precipitates strength and the subsequent effect on recrystallization resistance after cold rolling.…”

Section: Introductionmentioning

confidence: 98%

Effects of Er and Zr additions on precipitation and recrystallization of Al-Mg alloy

Zhao¹,

Wen²,

Wang³

et al. 2015

Advances in Computer Science Research

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Abstract. The effects of Er and Zr on the precipitation and recrystallization of Al-Mg alloy was investigated using hardness testing,optical microscopy and transmission electron microscopy. The results show that Al-Mg-Er-Zr alloy has a markedly hardening effect during isochronal annealing. The recrystallization temperature of the Al-Mg-Er-Zr alloy is significantly higher than that of Al-Mg alloy, owing to the presence of nanosized and coherent Al 3 (Er,Zr) precipitates.

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“…In the recent years of research studies the effect of low additions of erbium on the properties and microstructure of aluminum and its alloys has been intense [1][2][3][4][5][6][7][8][9][10]. The typical content of erbium in wrought and aluminium cast alloys are varies from 0.01 to 1.0 mass %, but preferably 0.1-0.3 mass % [11].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, Al-Er master alloys are prepared by direct alloying aluminium with erbium, respectively [6,8,9,12]. In its pure form, Er has a high melting point, which leads to losses of the alloying element and the base during melting and significant contaminate of master alloys by non-metallic impurities.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Novel Al-Er Master Alloys in Chloride-Fluoride Melt

Kosov

Bazhin

2018

MSF

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Abstract. A novel Al-Er master alloy has been prepared through situ metallothermic reactions of NaErF 4 and aluminium melts. The compound NaErF 4 is formed as a result of the interaction of NaF and ErF 3 in the melt medium KCl. The metallothermic reactions produce erbium, which through low solubility in molten aluminium and forms intermetallic compound Al 3 Er. The microstructures of the Al-Er master alloy with different contents of the alloying metal has been investigated. The results showed that the Al-Er master alloy mainly consisted of phases of α-Al and Al 3 Er, that confirmed by the results of X-ray diffraction. Backscattered electron imaging of the Al-Er master alloy under a scanning electron microscope (SEM) revealed the presence of phase Al 3 Er, which crystallized in the eutectic composition [Al+Al 3 Er]. The observed microstructure is explained according to the eutectic reaction in an Al-Er phase diagram. The preparation of Al-Er master alloy by the metallothermic reduction method will allow to reduce energy consumption for master alloy production and to reduce the cost of aluminium alloys alloyed with Er through the novel master alloy.

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Effects of Er and Zr additions on precipitation and recrystallization of pure aluminum

Cited by 120 publications

References 17 publications

Study on microstructures and mechanical properties of super narrow gap joints of thick and high strength aluminum alloy plates welded by fiber laser

Study on microstructures and mechanical properties of super narrow gap joints of thick and high strength aluminum alloy plates welded by fiber laser

Effects of Er and Zr additions on precipitation and recrystallization of Al-Mg alloy

Preparation of Novel Al-Er Master Alloys in Chloride-Fluoride Melt

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