Directional solidification of undercooled melt

被引：0
|
作者：
李金富
吕衣礼
杨根仓
周尧和
机构：
[1] China
[2] Northwestern Polytechnical University
[3] State Key Laboratory of Solidification Processing
[4] Xi’an 710072
来源：
Progress in Natural Science | 1997年 / 06期
基金：
中国国家自然科学基金;
关键词：
high undercooling; single phase alloy; directional solidification;
D O I：
暂无
中图分类号：
TG111 [金属物理学];
学科分类号：
0702 ; 070205 ;
摘要：
The directional solidification of highly undercooled single phase alloy is put forward. In contrast with the conventional directional solidification, it occurs under a negative temperature gradient at the solid/liquid interface. The essential condition for this process is that the thermal diffusion in liquid plays a dominant role in the crystal growth. An experiment on Cu-30at. %Ni alloy was conducted, and a directional solidification structure consisting of a single crystal was obtained in the undercooling range of 105-155 K.
引用
收藏
页码：98 / 103
页数：6
相关论文
共 50 条
  • [41] Disorder trapping in Ni-3(Al, Ti) by solidification from the undercooled melt
    Goetzinger, R
    Barth, M
    Herlach, DM
    Hunziker, O
    Kurz, W
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 226 : 415 - 419
  • [42] PLANAR SOLIDIFICATION FROM AN UNDERCOOLED MELT - ASYMPTOTIC SOLUTIONS TO A CONTINUUM MODEL WITH INTERFACIAL KINETICS
    CHARACH, C
    ZALTZMAN, B
    PHYSICAL REVIEW E, 1993, 47 (02): : 1230 - 1234
  • [43] Temperature-controllable regime of directional solidification of binary melt
    Buevich, Yu.A.
    Iskakova, L.Yu.
    Rasplavy, 1993, (02): : 65 - 72
  • [44] Directional Solidification of Dendritic Microstructures in Microgravity and with Forced Melt Flow
    Zimmermann, G.
    Weiss, A.
    MICROGRAVITY SCIENCE AND TECHNOLOGY, 2005, 16 (1-4) : 143 - 147
  • [45] Rapid directional solidification excited from bulk supercooled melt
    Xie, FQ
    Zhang, J
    Mao, XM
    Li, DL
    Fu, HZ
    JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1997, 63 (1-3) : 776 - 778
  • [46] Numerical simulation of semiconductor crystal growth by directional melt solidification
    Goncharov, VA
    THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING, 2001, 35 (03) : 242 - 248
  • [47] Influence of thermal stabilization on the solute concentration of the melt in directional solidification
    Liu, Dongmei
    Su, Yanqing
    Li, Xinzhong
    Luo, Liangshu
    Guo, Jingjie
    Fu, Hengzhi
    JOURNAL OF CRYSTAL GROWTH, 2010, 312 (24) : 3658 - 3664
  • [48] Growth of large single-grain decagonal quasicrystal by directional solidification of undercooled Al72Ni12Co16 alloy melt
    Liu, XB
    Li, JG
    Yang, GC
    JOURNAL OF MATERIALS SCIENCE, 2005, 40 (19) : 5255 - 5258
  • [49] Growth of large single-grain decagonal quasicrystal by directional solidification of undercooled Al72Ni12Co16 alloy melt
    Xinbao Liu
    Jianguo Li
    Gencang Yang
    Journal of Materials Science, 2005, 40 : 5255 - 5258
  • [50] Influence of isothermal approximation on the phase-field simulation of directional growth in undercooled melt
    Yu, YM
    Yang, GC
    Zhao, DW
    Lü, YL
    CHINESE PHYSICS, 2003, 12 (02): : 211 - 217
12345