Effect of structure and nonmetallic inclusions on the intercrystalline fracture of cast steel

被引：6

作者：

Schastlivtsev, V. M. ^{[1
]}

Tabatchikova, T. I. ^{[1
]}

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

Klyueva, S. Yu. ^{[1
]}

机构：

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

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2013年 / 114卷 / 02期

关键词：

low-carbon cast steel; intercrystalline fracture; structure; mechanical properties; eutectic-type oxysulfides; OPTIMIZATION; 20GL;

D O I：

10.1134/S0031918X13020129

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The structures of castings of 20GL and 20GFL steels have been investigated using metallography, as well as scanning and transmission electron microscopy. The correlation between the character of the structure and the level of mechanical properties has been established. It has been shown that a significant decrease in the plasticity and impact toughness of these steels is observed upon the manifestation of the intercrystalline fracture, the development of which is primarily connected with the weakening of intercrystalline bonds due to the presence at primary-crystal boundaries of colonies of coarse-lamellar pearlite and nonmetallic inclusions (film precipitates and eutectic-type oxysulfides).

引用

页码：180 / 189

页数：10

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