NUMERICAL MODELING OF CELLULAR AND DENDRITIC ARRAY GROWTH - SPACING AND STRUCTURE PREDICTIONS

被引：47

作者：

HUNT, JD

LU, SZ

机构：

[1] Department of Materials, University of Oxford, Oxford

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1993年 / 173卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(93)90191-G

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A numerical model of cellular and dendritic growth has been developed which can predict cellular and dendritic growth spacings, undercoolings, interface shape and transitions between structures. An important feature of the model is that the spacing selection mechanism is treated so that no a priori assumption, such as marginal stability, is used. A small stable range of spacings is predicted, both for cells and dendrites, and these agree very well with experiment, both at low velocities and at high velocities.

引用

收藏

页码：79 / 83

页数：5

相关论文

共 12 条

[1] MICROSEGREGATION IN RAPIDLY SOLIDIFIED AG-15WT-PERCENT-CU ALLOYS [J].

BOETTINGER, WJ ;

BENDERSKY, LA ;

CORIELL, SR ;

SCHAEFER, RJ ;

BIANCANIELLO, FS .

JOURNAL OF CRYSTAL GROWTH, 1987, 80 (01) :17-25

[2]

GARRARD M, 1992, ACTA METALL MATER, V40, P983

[3] LASER RESOLIDIFICATION OF THE AL-AL2CU EUTECTIC - THE COUPLED ZONE [J].

GILL, SC ;

ZIMMERMANN, M ;

KURZ, W .

ACTA METALLURGICA ET MATERIALIA, 1992, 40 (11) :2895-2906

[4] THE MICROSTRUCTURE OF RAPIDLY SOLIDIFIED AL-FE ALLOYS SUBJECTED TO LASER SURFACE-TREATMENT [J].

GREMAUD, M ;

CARRARD, M ;

KURZ, W .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (12) :2587-2599

[5] BANDING PHENOMENA IN AL-FE ALLOYS SUBJECTED TO LASER SURFACE-TREATMENT [J].

GREMAUD, M ;

CARRARD, M ;

KURZ, W .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (07) :1431-1443

[6] A NUMERICAL-ANALYSIS OF TIME-DEPENDENT ISOLATED DENDRITIC GROWTH FOR CONDITIONS NEAR THE STEADY-STATE [J].

HUNT, JD .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (03) :411-418

[7] A NUMERICAL-ANALYSIS OF DENDRITIC AND CELLULAR GROWTH OF A PURE MATERIAL INVESTIGATING THE TRANSITION FROM ARRAY TO ISOLATED GROWTH [J].

HUNT, JD .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (09) :2117-2133

[8] STEADY-STATE DENDRITIC CRYSTAL-GROWTH [J].

KESSLER, DA ;

KOPLIK, J ;

LEVINE, H .

PHYSICAL REVIEW A, 1986, 33 (05) :3352-3357

[9] THEORY OF MICROSTRUCTURAL DEVELOPMENT DURING RAPID SOLIDIFICATION [J].

KURZ, W ;

GIOVANOLA, B ;

TRIVEDI, R .

ACTA METALLURGICA, 1986, 34 (05) :823-830

[10]

KURZ W, 1992, COMMUNICATION