Influences of Nickel and Vanadium Impurities on Microstructure of Aluminum Alloys

Zhu, Su-Ming; Yao, Jiyong; Sweet, Lisa; Easton, Mark; Taylor, J. A.; Robinson, Paul R.; Parson, Nick

doi:10.1007/s11837-013-0572-9

Cited by 22 publications

(9 citation statements)

References 6 publications

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“…Currently, it is not clear yet for the association between α-AlFeMnSi and Ni in the experimental alloy. It was observed that Al 3 Ni were formed in a fairly low Ni content in Al-Mg-Si wrought alloys [16,18], which is not consistent with the results in this work. However, the differences between previous work and this work is obvious because the Fe content is low in the wrought alloy and the Mn content is relatively high in the alloy in this work.…”

Section: Discussion 41 Phase Formation In Die-cast Al-mg-si-mn Alloycontrasting

confidence: 99%

“…It was reported that Ni was mainly associated with iron in the form of AlFeSi intermetallics at low levels and in the form of Al 3 Ni intermetallics at higher concentrations, such as in an Al-Mg-Si wrought alloy containing 1.4wt.% Ni [18]. A recent investigation [16] has also shown that Ni additions up to 0.05 wt.% did not have an obvious influence on the phase constituents of AA6063 alloy. A significant influence on the microstructure were observed in the as-cast condition of AA3102 alloy when Ni content was 0.05wt.%.…”

Section: Introductionmentioning

confidence: 95%

“…Nickel is defined as an impurity in many commercial aluminium alloys with a limitation of 0.2wt.%, although it has been used as an alloying element up to a level of 2.5 wt.% in some commercial aluminium alloys, which can be found in both wrought and casting alloys [14,15]. In alloying of aluminium nickel has been recognised as a strongly partitioning and slow-diffusing element [16]. Nickel is almost insoluble in aluminium; with solubility being about 0.05 wt.% at 640 o C and less than 0.005 wt.…”

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Effect of nickel on the microstructure and mechanical property of die-cast Al–Mg–Si–Mn alloy

et al. 2014

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The effect of nickel on the microstructure and mechanical properties of a die-cast Al-Mg-Si-Mn alloy has been investigated. The results show that the presence of Ni in the alloy promotes the formation of Ni-rich intermetallics. These occur consistently during solidification in the die-cast Al-Mg-Si-Mn alloy across different levels of Ni content. The Ni-rich intermetallics exhibit dendritic morphology during the primary solidification and lamellar morphology during the eutectic solidification stage. Ni was found to be always associated with iron, forming AlFeMnSiNi intermetallics and no Al 3 Ni intermetallic was observed when Ni concentrations were up to 2.06wt% in the alloy. Although with different morphologies, the Ni-rich intermetallics were identified as the same AlFeMnSiNi phase bearing a typical composition of Al (Fe,Mn) [2][3][4][5][6][7] SiNi [4][5][6][7][8][9]. With increasing Ni content, the spacing of the -Al-Mg 2 Si eutectic phase was enlarged in the Al-Mg-Si-Mn alloy. The addition of Ni to the alloy resulted in a slight increase in the yield strength, but a significant decrease in the elongation. The ultimate tensile strength (UTS) increased slightly from 300 MPa to 320MPa when a small amount (e.g., 0.16wt. %) of Ni was added to the alloy, but further increase of the Ni content resulted in a decrease of the UTS. Keywords: Aluminium alloy; microstructural evolution; mechanical properties; Ni-rich compounds; high pressure die casting; CALPHAD modelling IntroductionIn the manufacture of fuel efficient transport systems, weight reduction through the use of lightweight materials remains a very successful and simple means of improving fuel economy and reducing harmful emissions. Increases in aluminium alloys usage for automotive applications provide significant opportunities for weight reduction and therefore real scope to achieve environmental goals, when compared to a conventional steel-based vehicle [1,2]. A 100kg reduction in car weight leads to a saving of 10g CO 2 per kilometre [3]. Aluminium's weight to strength ratio and its high recyclability potential has resulted in a number of aluminium intensive vehicles being released by major automotive manufacturers. This light-weighting strategy has resulted in a decrease of CO 2 produced during the vehicle use phase and also in the manufacturing stage by reducing the use primary aluminium through utilising end-of-life vehicles (ELVs) metal scrap recycling [4,5]. Up to 75% of aluminium recycled in Europe has been used for applications in transportation [6]. The re-use of recycled metal scraps is an important factor for the closed-loop material cycles to support circular economies in accordance with ecological principles [ 7 , 8 ]. Consequently, it is important and essential to understand more about the recycling of aluminium alloys. In recycling aluminium alloys, the unchecked accumulation of impurities will result in the solute concentrations of these elements exceeding the limitation of the registered specification, this restricts the applicati...

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Section: Discussion 41 Phase Formation In Die-cast Al-mg-si-mn Alloycontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 95%

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Effect of nickel on the microstructure and mechanical property of die-cast Al–Mg–Si–Mn alloy

et al. 2014

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“…Higher V levels can be more problematic for smelters producing higher purity aluminum products depending on the end-use application. A significant body of work has already been undertaken on this issue, [22][23][24] and more is underway. For some alloys, higher V levels may even be advantageous.…”

Section: Changes In Petroleum Coke Quality: Current and Future Challementioning

confidence: 99%

The History and Future Challenges of Calcined Petroleum Coke Production and Use in Aluminum Smelting

Edwards

2014

JOM

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“…These alloys are characterized by an ability to absorb kinetic energy -the feature of material particularly useful in the assessment of properties of the structural components of vehicles subjected to strong deformation in the crumple zone in the case of accidents (low ratio of Rp0.2/Rm and very high value of the reduction of area Z) [1]. The role of vanadium in aluminium alloys, especially when this element is present in small amounts, is not sufficiently well known, and data published in the literature is sparse [2,3]. It is believed that the Studies of composite nickel coatings electrolytically deposited on aluminium alloys with different content of vanadium were described.…”

Section: Introductionmentioning

confidence: 99%

Composite Nickel Coatings Produced on 6XXX Series Aluminium Alloys with the Addition of Vanadium / Kompozytowe Powłoki Niklowe Wytwarzane Na Stopach Aluminum Serii 6XXX Z Dodatkiem Wanadu

Nowak

Lech-Grega

Kozik

et al. 2015

Archives of Metallurgy and Materials

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Studies of composite nickel coatings electrolytically deposited on aluminium alloys with different content of vanadium were described. Composite coatings were deposited from a Watts bath containing fine-dispersed SiC powder particles in an amount of 20 g/l and organic matters such as saccharin and sodium laurate. The morphology, structure and thickness of the obtained composite coatings were presented. The corrosion resistance of produced coatings was examined by electrochemical method. Basing on the results of studies it was found that coatings obtained with the sole addition of saccharin were characterized by numerous surface defects. The addition of sodium laurate eliminated the occurrence of defects caused by hydrogen evolution and the resulting coatings were continuous with good adhesion to the substrate. The distribution of the ceramic SiC phase in coatings was fairly uniform for all the examined variants of aluminium alloys. SEM examinations did not reveal the phenomenon of the ceramic particles agglomeration.

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Influences of Nickel and Vanadium Impurities on Microstructure of Aluminum Alloys

Cited by 22 publications

References 6 publications

Effect of nickel on the microstructure and mechanical property of die-cast Al–Mg–Si–Mn alloy

Effect of nickel on the microstructure and mechanical property of die-cast Al–Mg–Si–Mn alloy

The History and Future Challenges of Calcined Petroleum Coke Production and Use in Aluminum Smelting

Composite Nickel Coatings Produced on 6XXX Series Aluminium Alloys with the Addition of Vanadium / Kompozytowe Powłoki Niklowe Wytwarzane Na Stopach Aluminum Serii 6XXX Z Dodatkiem Wanadu

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