Assessment of AlSi21CuNi Alloy’s Quality with Use of ATND Method

Pezda, J.

doi:10.2478/afe-2013-0088

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Here, Si was separated from its highly supersaturated melt and the eutectic temperature was lowered, because there was no nucleation. [ 16,32 ] In the study by Pezda et al, [ 33 ] it was shown that strontium content of 0.04–0.06 wt% resulted in a maximum elongation at fracture for the similar aluminum casting alloy EN AC‐43 300. Due to the longer holding time of the melt in the furnace during the TRC process, no subsequent modification was necessary, similarly to the use of Na.…”

Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting

et al. 2022

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“…The wear resistance of these alloys is achieved by a higher silicon content, which also increases their strength. However, the improvement in strength and wear resistance is at the expense of machinability and castability [3][4]. A progressive material is the alloy AlSi21CuNiMg.…”

Section: Introductionmentioning

confidence: 99%

Study of Si morphology in AlSi21CuNiMg cast alloy using col our and deep etching

Tillová,

Chalupová,

Kuchariková

et al. 2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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The effect of possible modification and refining effect of Al-Cu-P-based pre-alloy combined with Fe on the microstructure and the silicon morphology change in hypereutectic Al-Si cast alloy was studied. The samples in the as-cast state were observed by optical and scanning electron microscopy with energy-dispersive X-ray spectroscopy. The 3D morphology of both primary and eutectic silicon was observed by using colour and deep etching in detail. The results showed that the AlCu19P1.4 pre-alloy (1.07 wt.%) combined with the addition of Fe (0.02 wt.%) has a significant effect on the change of the amount, size and morphology of primary Si. This is significantly refined and changes the shape from a coarse irregular starshaped, polyhedral, or plate-like shape to a fine polyhedral shape. The average size of the primary Si is reduced by about of 78 % from 135 μm to 28 μm and the number of primary Si particles increased from 7.4 to 237. No change in the morphology of the eutectic Si was observed; a refinement of the structure from a coarse needle/plate-like to a fine plate-like structure was seen. The depth etching method using HCl was very effective in the study of the 3D silicon morphology observed, which could be observed in detail without the presence of artefacts.

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“…Application of suitable parameters of individual heat treatments determines obtainment of improved mechanical properties of processed materials [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect Of The T6 Heat Treatment On Change Of Mechanical Properties Of The AlSi12CuNiMg Alloy Modified With Strontium

Pezda¹

2015

Archives of Metallurgy and Materials

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The paper presents test results concerning an effect of the heat treatment on microstructure and mechanical properties of eutectic EN AC-AlSi12CuNiMg (EN AC-48000) alloy according to the EN 1706:2010 (tensile strength -R m , hardness -HB 10/1000/30) modified with strontium. Solution heat treatment and ageing treatment temperature ranges were selected on base of heating (melting) curves recorded with use of the ATD method. Temperatures of the solution heat treatment were 500, 520, and 535• C ±5 • C, while the solution time ranged from 0.5 to 3 h (0.5; 1.5 and 3 h). Temperature of the solution heat treatment amounted to 180, 235 and 310• C, while the ageing time ranged from 2 to 8 h (2, 5 and 8 h). Obtained results have enabled determination of optimal parameters of the T6 heat treatment in aspect of improvement of tensile strength R m and hardness HB of the alloy, with reduced time of individual treatments and determination of mathematical relationships enabling prediction of these mechanical properties.Keywords: aluminum alloys, heat treatment, mechanical properties W pracy przedstawiono wyniki badań dotyczące wpływu obróbki cieplnej na właściwości mechaniczne (wytrzymałość na rozciąganie -R m , twardość -HB 10/1000/30) i mikrostrukturę eutektycznego stopu EN AC-AlSi12CuNiMg (EN AC-48000) zgodnie z PN-EN 1706:2011 modyfikowanego strontem. Zakresy temperatur zabiegów przesycania i starzenia zostały dobrane w oparciu o krzywe nagrzewania (topienia) zarejestrowane metodą ATD. Temperatury przesycania wynosiły 500, 520 i 535• C ± 5• C, a czas przesycania mieścił się w zakresie od 0.5 do 3 godzin (0.5; 1.5 i 3 h). Temperatura starzenia wynosiła 180, 235 i 310• C. Czas przesycania mieścił się w zakresie od 2 do 8 godzin (2, 5 i 8 h). Uzyskane wyniki pozwoliły na określenie optymalnych parametrów obróbki cieplnej T6 w aspekcie poprawy wytrzymałości na rozciąganie R m i twardości HB stopu, przy ograniczeniu czasu poszczególnych zabiegów oraz wyznaczenie zależności matematycznych umożliwiających predykcje tych właściwości mechanicznych.

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Assessment of AlSi21CuNi Alloy’s Quality with Use of ATND Method

Cited by 4 publications

References 13 publications

Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting

Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting

Study of Si morphology in AlSi21CuNiMg cast alloy using col our and deep etching

Effect Of The T6 Heat Treatment On Change Of Mechanical Properties Of The AlSi12CuNiMg Alloy Modified With Strontium

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