Effect of Scandium on Microstructure and Mechanical Properties of Cast Al-Si-Mg Alloy

Kaiser, M. S.; Basher, M. R.; Kurny, A. S. W.

doi:10.1007/s11665-011-0057-3

Cited by 27 publications

(15 citation statements)

References 6 publications

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“…The increasing demand from many industries for improved properties in materials has stimulated the development of new materials. For the automotive industry, the properties most required are reduced weight, low thermal expansion coefficient, excellent mechanical properties, wear and corrosion resistance [3][4][5]. Iron is the most common impurity found in aluminium and is intentionally added to some pure alloys to provide a slight increase in strength [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Fe, Ni and Cr on the corrosion behaviour of hypereutectic Al-Si automotive alloy in 3.5% NaCl solution at different temperature and velocity

Kaiser¹,

Sabbir²,

Rahman³

et al. 2019

J. mech. eng.

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The main focus of this study is to examine and evaluate the effect of Fe, Ni and Cr on the corrosion behaviour of hypereutectic Al-Si automotive alloy in 3.5% NaCl solution. Experimental information are attained using conventional gravimetric measurements under different solution temperature and velocity and complemented by resistivity, optical micrograph, scanning electron microscopy (SEM) and X-ray analyzer (EDX) investigations. All the alloys show the negative corrosion rate due to formation of a very thin film of aluminum oxide and hydroxid on the surface. Intermetallic particles in the alloys play a major role in passivity. Temperature accelerates the corrosion and the higher velocity breakdown of the passive film. It also affects the resistivity of the alloys. The results from this study also indicate that the temperature and velocity increase the negative corrosion rate of the alloys due to higher rate of chemical reactions. SEM and EDX analysis indicate that the surfaces compose with a thin layer of aluminum oxide and hydroxide corrosion products.

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Section: Introductionmentioning

confidence: 99%

Effect of Fe, Ni and Cr on the corrosion behaviour of hypereutectic Al-Si automotive alloy in 3.5% NaCl solution at different temperature and velocity

Kaiser¹,

Sabbir²,

Rahman³

et al. 2019

J. mech. eng.

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“…Hypereutectic aluminium-silicon alloys are used in applications that require high resistance to wear, corrosion, good mechanical properties, low thermal expansion and reduced density 1,2 . Their properties are of greatest attention to the automobile industry for the fabrication of fuel-efficient vehicles using light weight components produced from these alloys such as connecting rods, pistons, cylinder liners and engine blocks [3][4][5] . The good mechanical properties and high resistance to wear are basically recognized to the presence of hard primary silicon particles spread in the metal matrix 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition

et al. 2018

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Effect of Fe, Ni and Cr addition on the wear behavior of hyper-eutectic Al-Si automotive alloy has been studied. Dry sliding wear tests have been conducted using pin-on-disc wear testing machine under normal loads of 20N and constant sliding speed of 0.64 ms-1. Influence of Fe addition to the base alloy increases the wear rate due to the formation of needle beta intermetallics. Ni addition to the alloy does not impede formation of needle-like intermetallic compounds and has no positive effect on the modification of microstructure. Introducing of Cr to the iron-rich alloy changes the beta intermetallics into the modified alpha phases and therefore reduced the detrimental effect of iron. As a result it recovers the strength and wear properties of the experimental alloy. Wear test surfaces were examined by SEM and have shown that Cr added alloy improves wear resistance through mild and smooth abrasive grooves filled with oxides.

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“…However, the decrease in hardness is also due to precipitation coarsening of the alloy. It was reported earlier that precipitation coarsening occurs beyond 250 o C [8]. can be attributed to the scale of analysis on each sample.…”

Section: Discussionmentioning

confidence: 90%

Recrystallization Kinetics in Aluminum Piston

Dutta

Kaiser

2014

Procedia Engineering

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Recrystallization kinetics of aluminum piston alloy is analyzed from the micro-hardness variation. Isothermally annealed samples were studied using JMAK type analysis to see if there exists any correlation between the two methods on analysis. Comparison between the two methods reveals that the alloy shows little variation in fraction recrystallization. It may be due to the precipitation hardening of the alloy. It also attains almost fully recrystallized state after 30 minutes of annealing at 700 o K.

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Effect of Scandium on Microstructure and Mechanical Properties of Cast Al-Si-Mg Alloy

Cited by 27 publications

References 6 publications

Effect of Fe, Ni and Cr on the corrosion behaviour of hypereutectic Al-Si automotive alloy in 3.5% NaCl solution at different temperature and velocity

Effect of Fe, Ni and Cr on the corrosion behaviour of hypereutectic Al-Si automotive alloy in 3.5% NaCl solution at different temperature and velocity

Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition

Recrystallization Kinetics in Aluminum Piston

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