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

被引：3
|
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
收藏
页码：621 / 627
页数：7
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