Effect of Deformation-Thermal Processing on the Microstructure and Mechanical Properties of Low-Carbon Structural Steel

被引：4

作者：

Sergeev, S. N. ^{[1
]}

Safarov, I. M. ^{[1
]}

Zhilyaev, A. P. ^{[1
]}

Galeev, R. M. ^{[1
]}

Gladkovskii, S. V. ^{[2
]}

Dvoinikov, D. A. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Problems Met Superplast, Ufa 450001, Russia

[2] Russian Acad Sci, Inst Engn Sci, Ural Branch, Ekaterinburg 620049, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2021年 / 122卷 / 06期

关键词：

low-carbon steel; impact strength; ultrafine-grained structure; IMPACT TOUGHNESS; STRENGTH; FRACTURE;

D O I：

10.1134/S0031918X21060090

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An ultrafine-grained (UFG) structure of equiaxed and fiber types in the low-carbon structural steel 05G2MFBT (Fe-2Mn-Mo-V-Nb-Ti) has been formed with various techniques of deformation-heat treatment. This steel with a UFG structure has been found to exhibit higher strength properties. Different deformation techniques have been shown to produce either a fibrous or an equiaxed UFG structure with carbide particles of a wide range of sizes. The brittle fracture resistance of the fibrous UFG steel has been found to be higher than that of the fine-grained steel after controlled rolling and subsequent accelerated cooling. Standard bending-impact tests have shown that the steel with a fibrous UFG structure is characterized by higher impact strength characteristics and a lower ductile-brittle transition temperature.

引用

页码：621 / 627

页数：7

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