Untitled

Choi, Yun-Hyuk; Lee, Jang‐Sik; Kim, W. T.; Y., H.

doi:10.1023/a:1004584415196

Cited by 40 publications

(12 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides the above-mentioned predominant Fe-intermetallic compounds, there were found other varieties of Fe-compounds, such as Al 60. 4 The increase of cooling rate from the upper part toward the tip region caused an increase in the solubility of Si in the Al-matrix and a gradual disappearance of pro-eutectic Si in A1 and A2 alloys. With the increase of cooling rates, the δ-Al 4 FeSi 2 and β-Al 5 FeSi phases did not disappear but their size decreased.…”

Section: Microstructural Characterization Of Alloys In the As-cast Comentioning

confidence: 98%

“…Previous studies have reported that the mechanical properties of Al-Si alloys depend on several microstructural parameters such as grain size, secondary dendrite arm spacing (SDAS), distribution of hard phases, the presence of secondary phases or Fe -intermetallic compounds, the morphology of Si particles (size, shape and distribution) and porosity. These are associated with the alloy composition, eutectic modification, degassing and solidification rates [3][4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of the Al-Si-X system by different cooling rates and heat treatment

et al. 2012

View full text Add to dashboard Cite

The solidification behavior of the Al-12.6% Si (A1), the hypereutectic Al-20%Si (A2) and the Al-20%Si-1.5% Fe-0.5%Mn (A3) (in wt. (%)) alloys, at different cooling rates is reported and discussed. The cooling rates ranged between 0.93 °C/s and 190 °C/s when cast in sand and copper wedge-shaped molds, respectively. A spheroidization heat treatment was carried out to the alloys in the as-cast condition at 540 °C for 11 hours and quench in water with a subsequent heat treatment at 170 °C for 5 hours with the purpose of improving the mechanical properties. The samples were characterized by optical microscopy, scanning electron microscopy and mechanically by tensile test, in order to evaluate the response of the heat treatment on the different starting microstructures and mechanical properties. It was found that alloys cooled at rates greater than 10.8 °C/s had a smaller particle size and better distribution, also showed a greater response to spheroidization heat treatment of all silicon (Si) phases. The spheroidization heat treatment caused an increase in the ultimate tensile stress (UTS) and elongation when compared with the alloys in the as-cast condition. The highest UTS value of 174 MPa was obtained for the (A1) alloy.

show abstract

Section: Microstructural Characterization Of Alloys In the As-cast Comentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Study of the Al-Si-X system by different cooling rates and heat treatment

et al. 2012

View full text Add to dashboard Cite

show abstract

“…It is the closest to the chemical composition of δ-Al 3 (Fe, Mn)Si 2 phase, found often in the high silicon and iron aluminium alloys [21,22]. Such phase is also said to undergo peritectic reaction into the β-phase [22]. As the casting solidification is not an equilibrium phenomenon, δ-Al 3 (Fe, Mn)Si 2 may probably also be formed in the alloys with lower silicon and iron contents and may not undergo complete transformation to the more stable, β-phase.…”

Section: Discussionmentioning

confidence: 61%

“…However, chemical composition of the phase found during the research, does not match any of the suggested compositions. It is the closest to the chemical composition of δ-Al 3 (Fe, Mn)Si 2 phase, found often in the high silicon and iron aluminium alloys [21,22]. Such phase is also said to undergo peritectic reaction into the β-phase [22].…”

Section: Discussionmentioning

confidence: 82%

Influence of the Chemical Composition on Electrical Conductivity and Mechanical Properties of the Hypoeutectic Al-Si-Mg Alloys

Dybowski

Szymszal

Poloczek

et al. 2016

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

Due to low density and good mechanical properties, aluminium alloys are widely applied in transportation industry. Moreover, they are characterized by the specific physical properties, such as high electrical conductivity. This led to application of the hypoeutectic Al-Si-Mg alloys in the power generation industry. Proper selection of the alloys chemical composition is an important stage in achievement of the demanded properties. The following paper presents results of the research on the influence of alloys chemical composition on their properties. It has been revealed that Si and Ti addition decreases electrical conductivity of the Al-Si-Mg alloys, while Na addition increases it. The mechanical properties of the investigated alloys are decreased by both silicon and iron presence. Sodium addition increases ductility of the Al-Si-Mg alloys.

show abstract

“…The addition of Fe to the hypereutectic Al-Si alloys can form Fe inter-metallic compounds, which can improve thermal stability. In contrast, Fe compounds such as α-Al 4 FeSi 2 and β-Al 5 FeSi phases present as acicular structures which result in inferior tensile strength 6 . Some researchers have proved that the morphologies of intermetallic compounds could be modified and presented acicular, Chinese-script shape, fishbone shaped, and block-like respectively with varying contents of Mn is added to the cast Al-Si-Fe alloys under conventional casting condition [7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Effect of cooling slope and manganese on the microstructure of hypereutectic Al-Si alloy with 2 %Fe

Zhou

et al. 2013

Mat. Res.

View full text Add to dashboard Cite

The effect of cooling slope (CS) on the microstructure of hypereutectic Al-22Si-2Fe (% w/w) alloys with 0%, 0.99%, and 1.36% Mn were studied. The results showed that primary Si particles (PSPs), needle-like Fe phases, coarse fishbone-shaped α-Al 15 (Fe, Mn) 3 Si 2 phases, and eutectic Si could be refined. With such a CS process, the intermetallic compounds in the alloys with different Mn/Fe ratios were examined with an optical microscope, scanning electron microscope, and X-ray diffraction. Moreover, the acicular δ-Al 4 (Fe, Mn)Si 2 and blocky α-Al 15 (Fe, Mn) 3 Si 2 phases were analyzed by transmission electron microscopy.

show abstract

Untitled

Cited by 40 publications

References 5 publications

Study of the Al-Si-X system by different cooling rates and heat treatment

Study of the Al-Si-X system by different cooling rates and heat treatment

Influence of the Chemical Composition on Electrical Conductivity and Mechanical Properties of the Hypoeutectic Al-Si-Mg Alloys

Effect of cooling slope and manganese on the microstructure of hypereutectic Al-Si alloy with 2 %Fe

Contact Info

Product

Resources

About