Dislocation structure of cementite in granular pearlite after cold plastic deformation

被引：20

作者：

Kar'kina, L. E. ^{[1
]}

Zubkova, T. A. ^{[1
]}

Yakovleva, I. L. ^{[1
]}

机构：

[1] Russian Acad Sci, Ural Branch, Inst Met Phys, Ekaterinburg 620990, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2013年 / 114卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

granular pearlite; cold plastic deformation; electron microscopic analysis; stacking faults; dislocations; CARBON-STEELS; FRACTURE;

D O I：

10.1134/S0031918X13030095

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Cementite microstructure of the U8 steel with a granular pearlite structure has been investigated by the method of electron microscopy. It has been established that, at the early stages of deformation, carbide particles are deformed through the movement of stacking faults, which are characterized by an alpha[010] partial shift in the (001) planes of cementite. The Burgers vector, the slip plane [010](001) of the split dislocations forming pileups, and deformation bands have been determined using gb analysis. The stacking fault energy has been estimated in a (001) cementite plane: gamma(sf) similar to 12.8 mJ/m(2). With increasing degree of deformation, an additional slip has been shown to occur in cementite by the system [100](011).

引用

页码：234 / 241

页数：8

共 14 条

[1]

[Anonymous], 1997, Strength of Alloys. Part II. Deformation

[2] MICROSTRUCTURES OF DEFORMATION AND FRACTURE OF CEMENTITE IN PEARLITIC CARBON-STEELS STRAINED AT VARIOUS TEMPERATURES [J].

INOUE, A ;

OGURA, T ;

MASUMOTO, T .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1977, 8 (11) :1689-1695

[3]

Inoue A., 1973, Journal of the Japan Institute of Metals, V37, P875

[4] BURGERS VECTORS OF DISLOCATIONS IN CEMENTITE CRYSTAL [J].

INOUE, A ;

OGURA, T ;

MASUMOTO, T .

SCRIPTA METALLURGICA, 1977, 11 (01) :1-5

[5] DEFORMATION AND FRACTURE BEHAVIORS OF CEMENTITE [J].

INOUE, A ;

OGURA, T ;

MASUMOTO, T .

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, 1976, 17 (10) :663-672

[6] Computer simulation of carbon diffusion near b/2[010](001) dislocation in cementite [J].

Kar'kina, L. E. ;

Kar'kin, I. N. ;

Yakovleva, I. L. ;

Zubkova, T. A. .

PHYSICS OF METALS AND METALLOGRAPHY, 2013, 114 (02) :155-161

[7]

KARKINA LY, 1991, FIZ MET METALLOVED+, P173

[8]

Ken A. S., 1963, ACTA METALL, V11, P1101

[9] DISLOCATIONS IN CEMENTITE [J].

KOREEDA, A ;

SHIMIZU, K .

PHILOSOPHICAL MAGAZINE, 1968, 17 (149) :1083-&

[10]

KURDJUMOV GV, 1977, TRANSFORMATIONS IRON

← 1 2 →