Microstructure and Impact Toughness of High-Strength Low-Alloy Steel after Tempforming

被引：9

作者：

Dolzhenko, A. S. ^{[1
]}

Dolzhenko, P. D. ^{[1
]}

Belyakov, A. N. ^{[1
]}

Kaibyshev, R. O. ^{[1
]}

机构：

[1] Belgorod State Univ, Belgorod 308015, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2021年 / 122卷 / 10期

基金：

俄罗斯科学基金会;

关键词：

tempforming; lamellar structure; impact toughness; fractography; GRAIN-STRUCTURE;

D O I：

10.1134/S0031918X21100021

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effects of temperature and degree of tempforming deformation on the microstructure and impact toughness of high-strength low-alloy 25KhGMT steel have been considered. Tempforming forms a lamellar microstructure composed of grains and subgrains that are strongly elongated along the rolling direction. The average size of the grain section is 570-790 nm. Deformation texture includes < 001 > || ND and < 111 > || ND fibers. Tempforming increases the fracture work of this steel at lower test temperatures (KV-40 degrees C >= 360 J) due to the delamination of the specimen perpendicular to the impact direction, which prevents crack propagation towards the direction of the impact.

引用

页码：1014 / 1022

页数：9

共 18 条

[1]

[Anonymous], 2000, ASM Handbook, Mechanical Testing and Evaluation, V8, P2235

[2] Changes in the grain structure of metallic materials upon plastic treatment [J].

Belyakov, A. N. .

PHYSICS OF METALS AND METALLOGRAPHY, 2009, 108 (04) :390-400

[3] Effect of Laves Phase on Ductile-Brittle Transition of 12 Pct Cr Steel [J].

Borisova, J. ;

Dudko, V. ;

Mishnev, R. ;

Kaibyshev, R. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2019, 50A (08) :3528-3543

[4] Orientation gradients and geometrically necessary dislocations in ultrafine grained dual-phase steels studied by 2D and 3D EBSD [J].

Calcagnotto, Marion ;

Ponge, Dirk ;

Demir, Eralp ;

Raabe, Dierk .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (10-11) :2738-2746

[5]

Chaouadi R., 2002, From Charpy to Present Impact Testing, V30, P103

[6] Tempforming as an Advanced Processing Method for Carbon Steels [J].

Dolzhenko, Anastasiya ;

Kaibyshev, Rustam ;

Belyakov, Andrey .

METALS, 2020, 10 (12) :1-20

[7] Role of Tungsten in the Tempered Martensite Embrittlement of a Modified 9 Pct Cr Steel [J].

Fedoseeva, Alexandra ;

Dudova, Nadezhda ;

Kaibyshev, Rustam .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2017, 48A (03) :982-998

[8] Toughening of a 1500 Mpa class steel through formation of an ultrafine fibrous grain structure [J].

Kimura, Y. ;

Inoue, T. ;

Yin, F. ;

Sitdikov, O. ;

Tsuzaki, K. .

SCRIPTA MATERIALIA, 2007, 57 (06) :465-468

[9] Inverse temperature dependence of toughness in an ultrafine grain-structure steel [J].

Kimura, Yuuji ;

Inoue, Tadanobu ;

Yin, Fuxing ;

Tsuzaki, Kaneaki .

SCIENCE, 2008, 320 (5879) :1057-1060

[10] Influence of Carbon Content on Toughening in Ultrafine Elongated Grain Structure Steels [J].

Kimura, Yuuji ;

Inoue, Tadanobu .

ISIJ INTERNATIONAL, 2015, 55 (05) :1135-1144

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