Numerical Simulation of Solidification Structure Formation in High Mn Steel Casting Using Cellular Automaton Method

被引：8

作者：

Ishida, Hitoshi ^{[1
]}

Natsume, Yukinobu ^{[1
]}

Ohsasa, Kenichi ^{[2
]}

机构：

[1] Kobe Steel Ltd, Nishi Ku, Kobe, Hyogo 6212271, Japan

[2] Hokkaido Univ, Grad Sch Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

ISIJ INTERNATIONAL | 2008年 / 48卷 / 12期

关键词：

high Mn steel; Big Bang; cellular automaton method; numerical simulation; macrostructure of casting;

D O I：

10.2355/isijinternational.48.1728

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Numerical simulation analysis was carried out to predict the solidification grain structure in commercial scale high Mn steel casting using the cellular automaton (CA) method, and the critical pouring temperature to produce fine equiaxed structure was examined. In the present simulation, heterogeneous nucleation in bulk liquid and the crystal multiplication due to the 'Big Bang' mechanism were taken into account. Fine equiaxed grain structure was formed in the simulation with low pouring temperature of 1 638 K and mixed structure with columnar and equiaxed crystals was formed with higher pouring temperature of 1663 K. These simulated structures agreed with experimentally observed structures in real castings. To determine the critical pouring temperature to produce fine equiaxed crystal structure, CA simulations for several pouring temperatures were carried out and it was predicted that to obtain fine equiaxed grains in the high Mn steel casting, it will be required to cast with pouring temperature of less than 1 648 K.

引用

页码：1728 / 1733

页数：6

共 11 条

[1] Evaluation of crystal multiplication at mold wall during solidification of casting [J].

Akagiri, Tomohiro ;

Natsume, Yukinobu ;

Ohsasa, Kenichi ;

Matsuura, Kiyotaka .

ISIJ INTERNATIONAL, 2008, 48 (03) :355-361

[2] Phase-field model for binary alloys [J].

Kim, SG ;

Kim, WT ;

Suzuki, T .

PHYSICAL REVIEW E, 1999, 60 (06) :7186-7197

[3] MODELING AND NUMERICAL SIMULATIONS OF DENDRITIC CRYSTAL-GROWTH [J].

KOBAYASHI, R .

PHYSICA D, 1993, 63 (3-4) :410-423

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

KURZ, W ;

GIOVANOLA, B ;

TRIVEDI, R .

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

[5] Numerical modeling of solidification morphologies and segregation patterns in cast dendritic alloys [J].

Nastac, L .

ACTA MATERIALIA, 1999, 47 (17) :4253-4262

[6] Prediction of casting structure in aluminum-base multi-component alloys using heterogeneous nucleation parameter [J].

Natsume, Y ;

Ohsasa, K .

ISIJ INTERNATIONAL, 2006, 46 (06) :896-902

[7] Phase-field simulation of transient liquid phase bonding process of Ni using Ni-P binary filler metal [J].

Natsume, Y ;

Ohsasa, K ;

Narita, T .

MATERIALS TRANSACTIONS, 2003, 44 (05) :819-823

[8] Analysis of growth behavior of a cellular and dendritic interface under a constrained growth condition using a phase-field model [J].

Natsume, Y ;

Ohsasa, K ;

Esaka, H ;

Narita, T .

MATERIALS TRANSACTIONS, 2003, 44 (05) :824-828

[9] Investigation of the mechanism of alloy dendrite deflection due to flowing melt by phase-field simulation [J].

Natsume, Y ;

Ohsasa, K ;

Narita, T .

MATERIALS TRANSACTIONS, 2002, 43 (09) :2228-2234

[10] PROBABILISTIC MODELING OF MICROSTRUCTURE FORMATION IN SOLIDIFICATION PROCESSES [J].

RAPPAZ, M ;

GANDIN, CA .

ACTA METALLURGICA ET MATERIALIA, 1993, 41 (02) :345-360

← 1 2 →