Solidification behaviour of an AA5754 Al alloy ingot cast with high impurity content
作者： Sundaram Kumar , Nadendla Hari Babu , Geoff M. Scamans , Dmitry G. Eskin , Zhongyun Fan
DOI: 10.3139/146.110760
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摘要: Abstract In view of the recycling aluminium scrap for automotive sheet application, we have investigated solidification behaviour AA5754 alloy containing additional amounts impurity elements such as Si, Fe, and Cu. Ingot casts with a high content resulted in coarse α-Al dendrites complex-shaped secondary phases. A large volume Chinese script needle-type Fe-bearing intermetallic phases were observed to form at centre an ingot. addition grain-boundary eutectic, spherically shaped rosette-type eutectic within Al grain high-impurity alloy. The more uniform size distribution intermetallics Al–Ti–B refined is attributed presence fraction boundaries which distributes liquid where forced nucleate grow.
hanser-elibrary.com参考文章(21)
G Sha, K.A.Q O’Reilly, B Cantor, J.M Titchmarsh, R.G Hamerton, Quasi-peritectic solidification reactions in 6xxx series wrought Al alloys Acta Materialia. ,vol. 51, pp. 1883- 1897 ,(2003) , 10.1016/S1359-6454(02)00595-5
Celil A. Aliravci, Mihriban Ö. Pekgüleryüz, Calculation of phase diagrams for the metastable Al-Fe phases forming in direct-chill (DC)-cast aluminum alloy ingots Calphad-computer Coupling of Phase Diagrams and Thermochemistry. ,vol. 22, pp. 147- 155 ,(1998) , 10.1016/S0364-5916(98)00020-0
B.J. McKay, P. Cizek, P. Schumacher, K.A.Q. O’Reilly, Heterogeneous nucleation in an Al–Ni–Si alloy studied using a metallic glass technique Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 304, pp. 240- 244 ,(2001) , 10.1016/S0921-5093(00)01476-3
B Dutta, M Rettenmayr, Effect of cooling rate on the solidification behaviour of Al–Fe–Si alloys Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 283, pp. 218- 224 ,(2000) , 10.1016/S0921-5093(00)00742-5
D.T.L. Alexander, A.L. Greer, Formation of eutectic intermetallic rosettes by entrapment of liquid droplets during cellular columnar growth Acta Materialia. ,vol. 52, pp. 5853- 5861 ,(2004) , 10.1016/J.ACTAMAT.2004.08.043
Graeme Hoyle, Recycling opportunities in the UK for aluminium-bodied motor cars Resources, Conservation and Recycling. ,vol. 15, pp. 181- 191 ,(1995) , 10.1016/0921-3449(95)00022-4
A.K. Dahle, L. Arnberg, Development of strength in solidifying aluminium alloys Acta Materialia. ,vol. 45, pp. 547- 559 ,(1997) , 10.1016/S1359-6454(96)00203-0
A.K Mukhopadhyay, On the nature of the second phase particles present in an as-cast Al-Cu-Mg-Ag alloy Scripta Materialia. ,vol. 41, pp. 667- 672 ,(1999) , 10.1016/S1359-6462(99)00110-4
H. Xu, L.D. Xu, S.J. Zhang, Q. Han, Effect of the alloy composition on the grain refinement of aluminum alloys Scripta Materialia. ,vol. 54, pp. 2191- 2196 ,(2006) , 10.1016/J.SCRIPTAMAT.2006.02.035
D.G. Eskin, Suyitno, L. Katgerman, Mechanical properties in the semi-solid state and hot tearing of aluminium alloys Progress in Materials Science. ,vol. 49, pp. 629- 711 ,(2004) , 10.1016/S0079-6425(03)00037-9