Influence of Equal-Channel Angular Pressing on the Structure and Mechanical Properties of Low-Carbon Steel 10G2FT

被引：20

作者：

Astafurova, E. G. ^{[1
]}

Zakharova, G. G. ^{[1
]}

Naydenkin, E. V. ^{[1
]}

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

Raab, G. I. ^{[3
]}

机构：

[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk 634021, Russia

[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119991, Russia

[3] Ufa State Aviat Tech Univ, Ufa 450000, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2010年 / 110卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

equal-channel angular pressing; low-carbon steels; ferrite; pearlite; martensite; submicrocrystal-line structure; MICROSTRUCTURE;

D O I：

10.1134/S0031918X10090097

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Results are presented of the investigation of mechanical properties, microstructure, and phase composition of low-carbon steel 10G2FT (Fe-1.12Mn-0.08V-0.07Ti-0.1C) before and after equal-channel angular pressing (ECAP). It has been established that the ECAP of steel 10G2FT at T = 200 degrees C in the case of the ferritic-pearlitic state and at T = 400 degrees C in the case of the martensitic state leads to the formation of a predominantly submicrocrystalline structure with an average size of structural elements of approximately 0.3 mu m, causes an increase in the strength properties, a decrease in the plasticity, and the localization of plastic flow. It has been experimentally shown that the initially martensitic structure after ECAP causes higher strength properties in comparison with the ferritic-pearlitic structure.

引用

页码：260 / 268

页数：9

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