The chemical phenol extraction of intermetallic particles from casting AlSi5Cu1Mg alloy

Mrówka‐Nowotnik, G.; Sieniawski, Jan; Nowotnik, A.

doi:10.1111/j.1365-2818.2009.03273.x

Cited by 9 publications

(10 citation statements)

References 7 publications

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“…It can be concluded that, with the adding of the content of La, there is a significant difference in the grain refinement effect. The microstructure of as-cast AlSi5Cu1Mg alloy consists of a wide range of intermetallic phases such as α-Al, Al4Fe, γ-Al3FeSi, α-Al8Fe2Si, β-Al5FeSi and Al12FeMnSi phase [25]. The matrix α-Al of as-cast AlSi5Cu1Mg alloy exhibits coarse dendrites and irregular shapes of clutter (Figure 2a).…”

Section: Microstructure and Microhardnessmentioning

confidence: 99%

Effect of the Addition of Rare Earth Element La on the Tribological Behaviour of AlSi5Cu1Mg Alloy

2018

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Abstract:The effects of 0, 0.3, 0.6 and 0.9 wt % modifier La on the dry sliding wear behaviours of AlSi5Cu1Mg alloy were investigated under different friction conditions (normal loads, sliding velocities) by using pin-on-disc configuration. The microhardness of the alloys was tested, and it was found that the microhardness of the alloys was improved by the La addition. The AlSi5Cu1Mg + 0.6 wt % La alloy exhibited the smallest grain size and maximum microhardness. The wear mechanism analysis of the worn surface was done, which drew support from a scanning electron microscope (SEM) that was equipped with an energy dispersive spectrometer. The results showed that AlSi5Cu1Mg + 0.6 wt % La alloy exhibited the best wear resistance, which was mainly due to the modified grain and microhardness. At the sliding velocity of 0.19 m/s, the adhesive wear became the main wear mechanism with the increase of the load because of the rupture of the oxide layer on the friction surface. Under the load of 3.8 MPa, the abrasive wear became slight as the sliding velocity increasing, due to the recrystallization phenomenon that happened in the frictional surface.

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Section: Microstructure and Microhardnessmentioning

confidence: 99%

Effect of the Addition of Rare Earth Element La on the Tribological Behaviour of AlSi5Cu1Mg Alloy

2018

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“…69 The addition of 1% Cu to Al-Si alloys increased the transition load for mild to severe wear by three to four times that of the original alloys by increasing the stability and strength of the surface layer. 70 Hanafee 71 reported on the positive effect of magnesium, which precipitates out as a finely dispersed b-Mg 2 Si under controlled precipitation, 72 to the surface hardness of heat treated Al Alloys. However, these IMPs also impact the corrosion resistance of the alloys through the creation of galvanic cells with the surrounding a-Al matrix in the presence of an aqueous solution.…”

Section: Tribology Corrosion and Environmentsmentioning

confidence: 99%

Impact of intermetallic precipitates on the tribological and/or corrosion performance of cast aluminium alloys: a short review

Culliton¹,

Betts²,

Kennedy³

2013

International Journal of Cast Metals Research

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The role of various intermetallic precipitates (IMPs), or secondary phase particles, in governing the wear and corrosion performance characteristics of cast aluminium alloys is outlined in this brief review. Such alloys are especially important in transport applications where their low weight, low cost and recyclability make them very attractive. However, alloy wear and/or corrosion behaviour often limit their industrial application, and more work needs to be carried out to extend their use into other areas. Careful control of IMP nucleation and growth rates may be beneficial, especially in alloys exposed to corrosive environments. Silicon, copper and magnesium are all important elements for enhanced mechanical strength and tribological performance but often to the detriment of alloy corrosion resistance. Other elements such as iron may also play a significant role in deleterious IMP formation. Use of dispersoids based on novel (quasicrystals) seed alloys with similar lattice characteristics to the a-Al matrix may result in further exploitation of these alloys.

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“…The 6xxx-series aluminium alloys contains magnesium and silicon as major alloying elements [6][7][8][9][10][11][12]. These multiphase alloys belong to the group of commercial aluminum alloys, in which relative volume; chemical composition and morphology of structural constituents exert significant influence on their useful properties [1,[6][7][8][9][10][11]. Al-Mg-Si alloys that combine good strength, extrudability, favorable corrosion resistance with low cost have recently been used for automotive body sheet panel for weight saving, furniture, architectural facing and structures and transport vehicle frames.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Of 6xxx Series Aluminium Alloys

Mrówka‐Nowotnik¹,

Sieniawski²,

Kotowski³

et al. 2015

Archives of Metallurgy and Materials

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The hot deformation behavior of the 6xxx aluminum alloys was investigated by compression tests in the temperature range 100• C-375• C and strain rate range 10 −4 s −1 and 4x10 −4 s −1 using dilatometer DIL 805 BÄHR Thermoanalyse equipped with accessory attachment deformation allows the process to execute thermo-plastic in vacuum and inert gas atmosphere. Associated microstructural changes of characteristic states of examined alloys were studied by using the transmission electron microscope (TEM). The results show that the stress level decreases with increasing deformation temperature and deformation rate. And was also found that the activation energy Q strongly depends on both, the temperature and rate of deformation. The results of TEM observation showing that the dynamic flow softening is mainly as the result of dynamic recovery and recrystallization of 6xxx aluminium alloys.Keywords: Aluminum alloy, Hot deformation, Microstructural evolution, Activation energy Obróbkę cieplno-plastyczną stopów aluminium grupy 6xxx prowadzono w zakresie temperatury 100• C-375• C i prędkości odkształcania 10 −4 s −1 i 4x10 −4 s −1 na dylatometrze DIL 805 BÄHR Thermoanalyse wyposażonym w przystawkę odkształ-ceniową umożliwiającą wykonanie procesu odkształcania w próżni i w atmosferze gazu obojętnego. Zmiany mikrostruktury badanych stopów, zachodzące w charakterystycznych stadiach obróbki cieplno-plastycznej, badano za pomocą transmisyjnego mikroskopu elektronowego (TEM). Ustalono, że wielkość naprężenia zmniejsza się wraz ze wzrostem temperatury i wielkości odkształcenia. Również energia aktywacji Q w dużym stopniu zależy zarówno od temperatury jak i prędkości odkształcania. Wyniki obserwacji mikrostruktury TEM wykazały, że dynamiczne mięknięcie materiałów jest głównie wynikiem zachodzących procesów zdrowienia dynamicznego i rekrystalizacji stopu aluminium 6xxx.

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The chemical phenol extraction of intermetallic particles from casting AlSi5Cu1Mg alloy

Cited by 9 publications

References 7 publications

Effect of the Addition of Rare Earth Element La on the Tribological Behaviour of AlSi5Cu1Mg Alloy

Effect of the Addition of Rare Earth Element La on the Tribological Behaviour of AlSi5Cu1Mg Alloy

Impact of intermetallic precipitates on the tribological and/or corrosion performance of cast aluminium alloys: a short review

Hot Deformation Of 6xxx Series Aluminium Alloys

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