Effects of Ferrite Growth Rate on Interphase Boundary Precipitation in V Microalloyed Steels

被引：46

作者：

Murakami, Toshio ^{[1
,3
]}

Hatano, Hitoshi ^{[1
,3
]}

Miyamoto, Goro ^{[2
,3
]}

Furuhara, Tadashi ^{[2
,3
]}

机构：

[1] Kobe Steel Ltd, Kobe, Hyogo 6512271, Japan

[2] Tohoku Univ, Sendai, Miyagi 9808577, Japan

[3] Consortium Japan Res & Dev Ctr Met Fundamental St, Tokyo 1050003, Japan

来源：

ISIJ INTERNATIONAL | 2012年 / 52卷 / 04期

关键词：

interphase boundary precipitation; vanadium carbide; medium carbon steel; SOLUTE DRAG; PROEUTECTOID FERRITE; NEW-MODEL; TRANSFORMATION; PEARLITE; KINETICS;

D O I：

10.2355/isijinternational.52.616

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The interphase boundary precipitation behavior of vanadium carbide during isothermal ferrite transformation, which is the important phenomena for the hot forged medium carbon steels, was investigated and modeled. It was found that the intersheet spacing of interphase boundary precipitation of VC decreased with a decrease of ferrite growth rate during isothermal transformation. As a major factor affecting such an interphase boundary precipitation behavior, it was deduced that the vanadium segregation on migrating austenite/ferrite interphse boundary is quite important to understand the repeated precipitation of VC. In numerical simulation of VC precipitation, the influence of the vanadium concentration on the precipitation behavior at austenite/ferrite interface during isothermal transformation was examined based on a time-dependent solute drag model incorporated with parabolic growth rate. It was found that the change of the intersheet spacing during ferrite growth can be simulated by the newly proposed model for interphase boundary precipitation of alloy carbide.

引用

页码：616 / 625

页数：10

共 30 条

[1] EFFECT OF NITROGEN ON PRECIPITATION AND TRANSFORMATION KINETICS IN VANADIUM STEELS [J].

BALLIGER, NK ;

HONEYCOMBE, RWK .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1980, 11 (03) :421-429

[2]

BATTE AD, 1973, J IRON STEEL I, V211, P284

[3] DIFFUSIONAL TRANSFORMATIONS - A THEORY FOR THE FORMATION OF SUPERLEDGES [J].

BHADESHIA, HKDH .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1982, 69 (02) :745-750

[4] SOLUTE DIFFUSION IN ALPHA-IRON AND GAMMA-IRON [J].

BOWEN, AW ;

LEAK, GM .

METALLURGICAL TRANSACTIONS, 1970, 1 (06) :1695-&

[5] IMPURITY-DRAG EFFECT IN GRAIN BOUNDARY MOTION [J].

CAHN, JW .

ACTA METALLURGICA, 1962, 10 (SEP) :789-&

[6] Modeling of kinetics of isothermal idiomorphic ferrite formation in a medium-carbon vanadium-titanium microalloyed steel [J].

Capdevila, C ;

Caballero, FG ;

De Andrés, CG .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (07) :1591-1597

[7] THE ISOTHERMAL DECOMPOSITION OF AUSTENITE IN HOT-ROLLED MICROALLOYED STEELS [J].

CROOKS, MJ ;

CHILTON, JM .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1984, 15 (06) :1137-1145

[8] PRECIPITATION OF VC IN FERRITE AND PEARLITE DURING DIRECT TRANSFORMATION OF A MEDIUM CARBON MICROALLOYED STEEL [J].

DUNLOP, GL ;

CARLSSON, CJ ;

FRIMODIG, G .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1978, 9 (02) :261-266

[9] Influence of solute drag on the growth of proeutectoid ferrite in Fe-C-Mn alloy [J].

Enomoto, M .

ACTA MATERIALIA, 1999, 47 (13) :3533-3540

[10] Nucleation of proeutectoid ferrite on complex precipitates in Austenite [J].

Furuhara, T ;

Yamaguchi, J ;

Sugita, N ;

Miyamoto, G ;

Maki, T .

ISIJ INTERNATIONAL, 2003, 43 (10) :1630-1639

← 1 2 3 →