A numerical model Alloy/M has been applied to investigate the microsegregation in Al-4.45 wt pct Cu alloy. The calculated data were compared with the experimental measurements for samples solidified at different cooling rates.Discrepancies in solute concentration occur between the experimental observations and calculated results. Reasons for the discrepancies were discussed, and the effect of dendrite joining at a later stage of solidification on the microsegregation was investigated. Calculations that have included this effect showed a better fit with experimental results.
参考文献
| [1] | H D Brody;M C Flemings .[J].Transactions AIME,1966,236:615. |
| [2] | D H Kirkwood .[J].Materials Science and Engineering,1984,65:101. |
| [3] | A Roosz;E Halder;H E Exner .[J].Materials Science and Technology,1986,2:1149. |
| [4] | M Solari;H J Biloni .[J].Journal of Crystal Growth,1980,49:451. |
| [5] | M H Burden;J D Hunt .[J].Journal of Crystal Growth,1974,22:328. |
| [6] | T Koseki;T Matsumiya;W Yamada;T Ogawa .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1994,25:1309. |
| [7] | B Sundman;B Jansson;J Oersson .[J].CALPHAD-Computer Coupling of Phase Diagrams and Thermochemistry,1985,9:153. |
| [8] | T Kraft;M Rettenmayr;H E Exner .[J].Modelling and Simulation in Materials Science and Engineering,1996,4:161. |
| [9] | H B Dong;J D Hunt.[M].High.Temp.High.Press,2000:32, 311. |
| [10] | H. B. Dong;J. D. Hunt .A novel single-pan scanning calorimeter Measurement of thermophysical properties of metallic alloys[J].Journal of thermal analysis and calorimetry,2001(1):341-350. |
| [11] | M R M Shin .[D].Oxford University,2002. |
| [12] | M N Gungor .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1989,20:2529. |
| [13] | R H Davies;A T Dinsdale;T G Chart;T I Barry,M H Rand .[J].High Temp Technology,1990,26:251. |
| [14] | H B Dong;M R M Shin;E C Kurum;J D Hunt,H Cama .[J].H Fluid Phase Equilibria,2003,212:199. |
| [15] | H. B. DONG;M.R.M. SHIN;E.C. KURUM .A Study of Microsegregation in Al-Cu Using a Novel Single-Pan Scanning Calorimeter[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2003(3):441-447. |
| [16] | F Xie;T Kraft;Y Zuo;C Moon,Y A Chang .[J].Acta Materialia,1999,47:489. |
| [17] | J D Hunt;R W Thomas.Proc. of the 4th Decennial Int. Conf. Solidification Processing[C].Sheffield,UK,1997:350. |
| [18] | J D Hunt;S Z Lu .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1996,27:611. |
| [19] | V R Voller;R Sundarraj .[J].Materials Science and Technology,1993,9:474. |
| [20] | J Lacaze;G R J Lesoult .[J].Materials Science and Engineering A,1993,173:119. |
| [21] | X Y Yan;F Y Xie;M Chu;Y A Chang .[J].Materials Science and Engineering A,2001,302:268. |
| [22] | F Y Xie;T Kraft;Y Zuo;C Moon,Y A Chang .[J].Acta Materialia,1999,47:489. |
| [23] | H. Liang;T. Kraft;Y. A. Chang .Importance of reliable phase equilibria in studying microsegregation in alloys: Al-Cu-Mg[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1):96-103. |
| [24] | J Campbell.Metallography[M].,1971:269. |
| [25] | G. K. Sigworth .Hot tearing of metals[J].Transactions of the American Foundrymen's Society,1996(104):1053-1062. |
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