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共晶和包晶合金定向凝固过程中共生生长的形态稳定性
引用本文:苏彦庆,骆良顺,毕维生,郭景杰,傅恒志. 共晶和包晶合金定向凝固过程中共生生长的形态稳定性[J]. 中国有色金属学报, 2006, 16(7): 1125-1135
作者姓名:苏彦庆  骆良顺  毕维生  郭景杰  傅恒志
作者单位:哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001
基金项目:国家自然科学基金;新世纪优秀人才资助项目
摘    要:近年来对共晶合金共生(耦合)生长形态稳定性的研究取得了一系列重要的成果。这些成果主要包括:片层共晶共生生长在最小过冷度下的超稳定性、片层共晶共生生长的Z字形分叉、熔体流动及非线性动力学对共生生长形态稳定性的影响等。在此基础上人们又开始关注包晶合金定向凝固中的稳态共生生长及其形态稳定性。综述了这些研究成果,并对其发展方向进行了探讨。

关 键 词:共晶合金  包晶合金  共生生长  形态稳定性
文章编号:1004-0609(2006)07-1125-11
收稿时间:2006-01-09
修稿时间:2006-04-19

Morphological stability of coupled growth during directional solidification of eutectic and peritectic alloys
SU Yan-qing,LUO Liang-shun,BI Wei-sheng,GUO Jing-jie,FU Heng-zhi. Morphological stability of coupled growth during directional solidification of eutectic and peritectic alloys[J]. The Chinese Journal of Nonferrous Metals, 2006, 16(7): 1125-1135
Authors:SU Yan-qing  LUO Liang-shun  BI Wei-sheng  GUO Jing-jie  FU Heng-zhi
Affiliation:School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Abstract:The achievements of recent extensive experimental and theoretical researches on the morphological instabilities of eutectic and peritectic coupled growth were reviewed.The predominant findings are: the overstability below the minimum undercooling spacing of eutectic coupled growth,zigzag bifurcation in bulk lamellar eutectic coupled growth,influences of fluxion in melts and nonlinear dynamics upon the morphological instabilities of coupled growth,and morphological stability of isothermal and non-isothermal peritectic coupled growth,and the similarities and differences between peritectic and eutectic coupled growth.The prospective directions of morphological stability of coupled growth were discussed.
Keywords:eutectic alloy  peritectic alloy  coupled growth  morphological stability
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