Untitled

Li, S.-P.; Zhao, Shuping; Pan, M. X.; Zhao, D.Q.; Chen, X.-C.; Barabash, O.M.

doi:10.1023/a:1017525520066

Cited by 22 publications

(12 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li [11] and Shimosaka [12] reported two typical morphologies: lamella and rod. Zhang [13,14], Li [15] and Li [16] also reported the other typical morphology: flake. It was noticed that Li [15] also described this flake-like morphology as 'crossed and rooftop-like'.…”

Section: Solidification and Microstructural Evolution Of Al-mg 2 Si Ementioning

confidence: 90%

The effects of varying Mg and Si levels on the microstructural inhomogeneity and eutectic Mg2Si morphology in die-cast Al–Mg–Si alloys

et al. 2018

View full text Add to dashboard Cite

The effects of varying Mg and Si levels on the microstructural inhomogeneity and eutectic Mg 2 Si morphology in die-cast Al-Mg-Si alloys have been investigated. It was found both Mg and Si additions decreased the microstructural inhomogeneity by producing more well distribution of primary a-Al and Al-Mg 2 Si eutectics, but had contrary effects on eutectic Mg 2 Si morphology. The increasing Mg level transformed eutectic Mg 2 Si from rod or lamellae to curved flake with larger eutectic spacing k, while the increasing Si level promoted the formation of rod-like or lamellar eutectic Mg 2 Si with smaller k. The reason for the above evolutions can be traced back to alloys' solidification behaviour. Thermodynamic calculation indicates that both Mg and Si decrease the liquidus temperature and suppress the precipitation of coarse primary a-Al grains (which tend to agglomerate in centre zone of samples) during the first solidification in shot sleeve, thus reducing the microstructural inhomogeneity. Mg addition shifts the eutectic point to lower Mg 2 Si concentration and induces a slower eutectic growth rate, causing a lower Mg 2 Si volume fraction in Al-Mg 2 Si eutectic cell. On the contrary, Si addition increased the Mg 2 Si volume fraction in eutectic cell by raising the Mg 2 Si eutectic concentration and the eutectic growth rate. To minimize the interfacial energy, Al-Mg 2 Si eutectics with different Mg 2 Si volume fractions exhibit various morphologies. The tensile test results show that both Mg and Si improved the strength at the cost of ductility. However, due to the formation of fine Al-Mg 2 Si eutectics, Si induced less ductility sacrifice than Mg when achieving the same strength improvement.

show abstract

Section: Solidification and Microstructural Evolution Of Al-mg 2 Si Ementioning

confidence: 90%

The effects of varying Mg and Si levels on the microstructural inhomogeneity and eutectic Mg2Si morphology in die-cast Al–Mg–Si alloys

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Discontinuously particulate reinforced aluminum metal matrix composites (MMCs) have received a considerable amount of attention in recent years because of their high specific tensile strength and modulus, high wear resistance, low thermal-expansion and much lower costs of production, which make them the ideal candidates to replace steel and cast iron to meet the demand of weight reduction and fuel economization within the automotive industry [1][2][3][4][5][6][7]. Al-Mg 2 Si composites have high potential as automobile brake disc material because the intermetallic compound Mg 2 Si exhibits a rather high melting temperature (1085 1C), low density (1.99 Â 10 3 kg m À 3 ), a low thermal expansion coefficient (7.5 Â 10 À 6 k À 1 ), high hardness (4.5 Â 10 9 N m À 2 ) and a reasonably high elastic modulus (120 GPa) [2].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and tensile properties of cast Al–15%Mg2Si composite: Effects of phosphorous addition and heat treatment

Nasiri

Emamy

Malekan

et al. 2012

Materials Science and Engineering: A

View full text Add to dashboard Cite

“…Mg 2 Si/Al composites are reinforced with in situ Mg 2 Si particles. It has been shown that Mg 2 Si/Al composites are attractive candidate materials for aerospace, automotive, and other applications [5,6], because Mg 2 Si exhibits a high melting temperature of 1085 • C, low density of 1.99 × 10 3 kg m −3 , high hardness of 4.5 × 10 9 N m −2 , a low thermal expansion coefficient of 7.5 × 10 −6 K −1 and a reasonably high elastic modulus of 120 GPa [7].…”

Section: Introductionmentioning

confidence: 99%

Microstructural formation in hypereutectic Al–Mg2Si with extra Si

et al. 2009

Journal of Alloys and Compounds

112

View full text Add to dashboard Cite

Untitled

Cited by 22 publications

References 2 publications

The effects of varying Mg and Si levels on the microstructural inhomogeneity and eutectic Mg2Si morphology in die-cast Al–Mg–Si alloys

The effects of varying Mg and Si levels on the microstructural inhomogeneity and eutectic Mg2Si morphology in die-cast Al–Mg–Si alloys

Microstructure and tensile properties of cast Al–15%Mg2Si composite: Effects of phosphorous addition and heat treatment

Microstructural formation in hypereutectic Al–Mg2Si with extra Si

Contact Info

Product

Resources

About