Precipitation hardening and recrystallization behavior of Al Mg Er Zr alloys

Wen, S.P.; Wang, W.; Zhao, W.H.; Wu, Xiaolan; Gao, Kunyuan; Huang, Hui; Nie, Zuoren

doi:10.1016/j.jallcom.2016.06.045

Cited by 53 publications

(15 citation statements)

References 32 publications

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“…1). The observed peaks were identified as NaErF 4 and KCl medium (substrate). The general information of the phase diagram Al-Er system the reported in [20].…”

Section: Resultsmentioning

confidence: 99%

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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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“…1). The observed peaks were identified as NaErF 4 and KCl medium (substrate). The general information of the phase diagram Al-Er system the reported in [20].…”

Section: Resultsmentioning

confidence: 99%

“…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%

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

Kosov

Bazhin

2018

MSF

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“…Silicon in combination with Fe impurities decrease hardening due to (AlSiFeEr(Zr)) and (AlSiErY(Zr)) phase formation during solidification of the Al-Y-Er-Zr-Sc alloy [10]. The same strengthening mechanism provides good mechanical properties in the Al-Mg alloys [11][12][13][14][15][16][17], and Er has a positive effect in primary aluminium grain refining [12,14,15,17]. Most researchers have investigated the effect of small additives of Er in the aluminium alloys.…”

Section: Introductionmentioning

confidence: 95%

“…Erbium is a prospective alloying element to improve the mechanical properties of pure aluminium [1][2][3][4][5][6][7][8][9][10] and Al-Mg alloys [11][12][13][14][15][16][17] due to the nucleation of L1 2 precipitates after the annealing of as-cast ingots. Zhang et al demonstrated strengthening in the Al-0.045 at.%Er, which was achieved by Al 3 Er precipitate nucleation [1].…”

Section: Introductionmentioning

confidence: 99%

The Phase Composition and Mechanical Properties of the Novel Precipitation-Strengthening Al-Cu-Er-Mn-Zr Alloy

et al. 2020

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The microstructure, phase composition, and mechanical properties during heat treatment and rolling of the novel Al-5.0Cu-3.2Er-0.9Mn-0.3Zr alloy were evaluated. A new quaternary (Al,Cu,Mn,Er) phase with possible composition Al25Cu4Mn2Er was found in the as-cast alloy. Al20Cu2Mn3 and Al3(Zr,Er) phases were nucleated during homogenization, and θ″(Al2Cu) precipitates were nucleated during aging. The metastable disc shaped θ″(Al2Cu) precipitates with a thickness of 5 nm and diameter of 100–200 nm were nucleated mostly on the Al3(Zr,Er) phase precipitates with a diameter of 35 nm. The hardness Vickers (HV) peak was found after the annealing of a rolled alloy at 150 °C due to strengthening by θ″(A2Cu) precipitates, which have a larger effect in materials hardness than do the softening processes. The novel Al-Cu-Er-Mn-Zr alloy has a yield strength (YS) of 320–332 MPa, an ultimate tensile strength (UTS) of 360–370 MPa, and an El. of 3.2–4.0% in the annealed alloy after rolling condition.

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“…It is documented that the hot deformation behavior of aluminum alloys is affected by alloying elements [6][7][8], as the addition of solute elements may increase the dislocation density and hinder the dislocation motion. Thus, the mobility of grain boundaries is reduced [9,10]. The contribution from the work hardening and dynamic softening operates during the hot deformation process [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Role of Vanadium Addition on Hot Deformation Behavior of Aluminum Alloy 5083

Lijuan

Wang

Zhu³

et al. 2019

Metals

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The effect of V addition on the hot deformation behavior of AA5083 was investigated. Single axial compression tests were conducted on the cast and homogenized samples with strain rates ranging from 0.01 to 10 s−1 and deformation temperatures ranging from 300 to 450 °C. The results showed that the contents of V (0–0.10, in wt.%) do not change the grain size of alloy 5083 significantly in the as cast and homogenized conditions, but the formation of fine Al3V particles in the alloy with an addition of 0.05 wt.% V can increase the flow stress, and its activation energy is 10.0% higher than that of V-free alloy 5083. The processing maps show that the appropriate process domain for alloy 5083 with 0.05 wt.% V changes at different true strains. The mechanism for deformation softening is discussed as well.

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Precipitation hardening and recrystallization behavior of Al Mg Er Zr alloys

Cited by 53 publications

References 32 publications

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

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

The Phase Composition and Mechanical Properties of the Novel Precipitation-Strengthening Al-Cu-Er-Mn-Zr Alloy

Role of Vanadium Addition on Hot Deformation Behavior of Aluminum Alloy 5083

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