Acta Metall Sin  2005, Vol. 41 Issue (6): 593-598     DOI:

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Formation Mechanism of Band Structure and Phase Selection During Directional Solidification of Peritectic Alloys I.Formation Mechanism of Band Structure

LI Xinzhong; GUO Jingjie; SU Yanqing; WU Shiping; FU Hengzhi

School of Materials Science and Engineering; Harbin Institute of Technology; Harbin 150001

LI Xinzhong; GUO Jingjie; SU Yanqing; WU Shiping; FU Hengzhi. Formation Mechanism of Band Structure and Phase Selection During Directional Solidification of Peritectic Alloys I.Formation Mechanism of Band Structure. Acta Metall Sin, 2005, 41(6): 593-598 .

Abstract References Related Articles Recommended Metrics Download:  PDF(217KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Solute compositional distributions at and ahead of the solid--liquid interfaces are analyzed during the plane--front growth for both the primary and peritectic phases as single phase and nucleation phase for peritectic alloys directionally solidified at low growth rates from initial transient to steady state. Taking the nucleation and compositional undercooling criterion and assuming that the maximum interface growth temperature of phase growth is more stability during the directional solidification, the nucleation transitions during the transient period are investigated and compositional range of band structure formation is determined. Considering the history--dependant growths of a phase, the band structure can be differentiated as cycling band and single band structure, which can explain the experimental phenomena appropriately. The calculated results for Ti-Al alloy are identical with the theoretical analyses. Key words:  peritectic alloy      directional solidification      band structure       Received:  15 September 2004      ZTFLH:  TG111.4     TG132.32   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors LI Xinzhong GUO Jingjie SU Yanqing WU Shiping FU Hengzhi URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2005/V41/I6/593 [1]Boettinger W J.Metall Trans,1974;5:2023 [2]Brody H D,David S A.In:Solidification and Casting of Metals,London:The Metals Society,1979:144 [3]Titchener A P,Sppittle J A.Acta Metall,1975;23:497 [4]Ostrowski A,Langer E W.In:Solidification and Casting of Metals,London:The Metals Society,1979:139 [5]Trivedi R.Metall Trans,1995;26A:1583 [6]Zeisler-Mashl K L,Lograsso T A.Metall Mater Trans,1997;28A:1543 [7]Kurz W,Trivedi R.Metall Mater Trans,1996;27A:625 [8]Tokieda K,Yasuda H,Obanaka I.Mater Sci Eng,1999;A262:241 [9]Li S M,Liu L,Li X L,Fu H Z.Acta Metall Sin,2004;40:20 (李双明,刘林,李晓历,傅恒志．金属学报,2004;40:20) [10]Umeda T,Okane T.Sci Technol Adv Mater,2001;2:239 [11]Karma A,Rappel W-J,Fuh B C,Trivedi R.Metall Mater Trans,1998;29A:1457 [12]Hunziker O,Vandyoussefi M,Kurz W.Acta Mater,1998;46:6325 [13]Tiller W A.The Science of Crystallization:Macroscopic Phenomena and Defect Generation.Cambridge:Cambridge University Press,1991:143 [14]Zhang F,Chen S L,Chang Y A.In:Kim Y W,Wagner R,Yamaguchi M,eds.,Gamma Titanium Aluminides.War-rendale,PA:The Minerals,Metals & Materials Society,1995:131 [1] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. 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