As-cast microstructure and solidification behavior of a high Al- and Nb-containing superalloy
- 197 Downloads
- 3 Citations
Abstract
This study investigated the as-cast microstructure and solidification behavior of a high Al- and Nb-containing low thermal expansion IN783 alloy. By analyzing the as-cast microstructure, the quenched microstructure after soaking at high temperature and differential scanning calorimeter (DSC) results, the solidification sequence of IN783 alloy was determined as follows: L → L + γ → L + γ + β → γ + β + Laves. Segregation of Al and Nb promoted the formation of Al-enriched β phase and Nb-enriched Laves phase, respectively. Several types of β and Laves phase were observed, which were believed to form by different mechanisms and at different stages during solidification.
Keywords
Differential Scanning Calorimeter Lave Phase Element Segregation IN783 Alloy Interdendritic SegregationNotes
Acknowledgements
This work was financially supported by the National Basic Research Program (973 Program) of China under grant No. 2010CB631200 (2010CB631206), the National Natural Science Foundation of China (NSFC) under grant No. 50931004. The authors are grateful for those supports.
References
- 1.Smith JS, Heck KA (1996) In: Kissinger RD et al (eds) Superalloys 1996. The Minerals, Metals and Materials Society, Warrendale, p 91Google Scholar
- 2.Heck KA, Smith DF, Holderby MA, Smith JS (1992) In: Antolovich SD et al (eds) Superalloys 1992. The Minerals, Metals and Materials Society, Warrendale, p 237Google Scholar
- 3.Ma LZ, Chang K-M, Mannan SK, Patel SJ (2003) Scr Mater 48:551CrossRefGoogle Scholar
- 4.Ma LZ, Chang K-M (2004) J Mater Eng Perform 13:32CrossRefGoogle Scholar
- 5.Han GW, Zhang YY (2006) Mater Sci Eng A 441:253CrossRefGoogle Scholar
- 6.Higginbotham BE, Chang KM, Mannan S, deBarbadillo JJ (1997) In: Proceedings of the first international non-ferrous processing and technology conference, St. Louis, Missouri, p 483Google Scholar
- 7.Jia XY, Zhao YX, Zhang SW (2006) Mater Eng (in Chinese) Suppl 1:165Google Scholar
- 8.Han GW, Zhang YY (2005) Mater Sci Eng A 412:198CrossRefGoogle Scholar
- 9.Mannan SK, Smith GD, Patel SJ (2004) In: Green KA et al (eds) Superalloys 2004. The Minerals, Metals and Materials Society, Warrendale, p 627Google Scholar
- 10.Ott EA, Groh JR, Mannan SK (2004) In: Green KA et al (eds) Superalloys 2004. The Minerals, Metals and Materials Society, Warrendale, p 643Google Scholar
- 11.Cieslak MJ, Headley TJ, Knorovsky GA, Romig AD Jr, Kollie T (1990) Metall Trans A 21:479CrossRefGoogle Scholar
- 12.Dupont JN, Robino CV, Michael JR, Notis MR, Marder AR (1998) Metall Mater Trans A 29:2785CrossRefGoogle Scholar
- 13.Boettinger WJ, Kattner UR (2002) Metall Mater Trans A 33:1779CrossRefGoogle Scholar
- 14.Schneider MC, Gu JP, Beckermann C, Boettinger WJ, Kattner UR (1997) Metall Mater Trans A 28:1517CrossRefGoogle Scholar
- 15.Ojo OA, Richards NL, Chaturvedi MC (2004) Scr Mater 51:683CrossRefGoogle Scholar
- 16.Zupanič F, Bončina T, Križman A, Tichelaar FD (2001) J Alloys Compd 329:290CrossRefGoogle Scholar
- 17.Sun XF, Yin FS, Li JG, Hou GC, Zheng Q, Guan HR, Hu ZQ (2003) Acta Metall Sin (in Chinese) 39:27Google Scholar
- 18.Ganesan M, Dye D, Lee PD (2005) Metall Mater Trans A 36:2191CrossRefGoogle Scholar
- 19.Jia CC, Ishida K, Nishizawa T (1994) Metall Mater Trans A 25:473CrossRefGoogle Scholar