EFFECTS OF VANADIUM AND NIOBIUM ON THE NUCLEATION KINETICS OF PROEUTECTOID FERRITE AT AUSTENITE GRAIN-BOUNDARIES IN FE-C AND FE-C-MN ALLOYS

被引：42

作者：

ENOMOTO, M

NOJIRI, N

SATO, Y

机构：

[1] Department of Materials Science, Ibaraki University, Hitachi, 4-12-1, Nakanarusawa

[2] Department of Metallurgical Engineering, Shibaura Institute of Technology, Tokyo

来源：

MATERIALS TRANSACTIONS JIM | 1994年 / 35卷 / 12期

关键词：

CLASSICAL NUCLEATION THEORY; INHOMOGENEOUS NUCLEATION; IRON ALLOY; MICROALLOYING; FERRITE TRANSFORMATION; GRAIN BOUNDARY SEGREGATION;

D O I：

10.2320/matertrans1989.35.859

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nucleation kinetics of proeutectoid ferrite allotriomorphs at austenite grain boundaries were measured in Fe-0.1 mass%C and Fe-0.1 mass%C-2 mass%Mn alloys with small amounts of V or Nb. Nb was one or two orders of magnitude more effective than V in reducing the nucleation kinetics of ferrite compared at the same amount of addition. The segregation of alloying elements to austenite grain boundaries and the formation of atom clusters with carbon or fine coherent precipitates at ferrite nucleation sites were considered as possible causes for the observed suppression of nucleation. However, quantitative agreement with theory or direct experimental evidence is yet to be obtained for these possibilities to be deemed operative in the present alloys.

引用

页码：859 / 867

页数：9

共 25 条

[1]

[Anonymous], QUANTITATIVE STEREOL

[2]

Aronsson B., 1969, STEEL STRENGTHENING, P77

[3]

BANERJI SK, 1980, BORON STEEL

[4] EFFECTS OF AUSTENITIZING TEMPERATURE ON KINETICS OF PRO-EUTECTOID FERRITE REACTION AT CONSTANT AUSTENITE GRAIN-SIZE IN AN FE-C ALLOY [J].

BRADLEY, JR ;

AARONSON, HI ;

RUSSELL, KC ;

JOHNSON, WC .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1977, 8 (12) :1955-1961

[5] THE KINETICS OF FERRITE NUCLEATION AT AUSTENITE GRAIN EDGES IN FE-C AND FE-C-X ALLOYS [J].

ENOMOTO, M ;

LANGE, WF ;

AARONSON, HI .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (08) :1399-1407

[6] NUCLEATION KINETICS OF PROEUTECTOID FERRITE AT AUSTENITE GRAIN-BOUNDARIES IN FE-C-X ALLOYS [J].

ENOMOTO, M ;

AARONSON, HI .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (08) :1385-1397

[7] EVALUATION OF THE EFFECTS OF SEGREGATION ON AUSTENITE GRAIN-BOUNDARY ENERGY IN FE-C-X ALLOYS [J].

ENOMOTO, M ;

WHITE, CL ;

AARONSON, HI .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1988, 19 (07) :1807-1818

[8]

ENOMOTO M, 1983, UNPUB

[9]

ENOMOTO M, 1992, UNPUB

[10]

Gray J., 1965, IRON STEEL I J, V203, P812

← 1 2 3 →