Structure and mechanical properties of cast iron, inoculated by mechanically activated mixture of tungsten carbide and chromium carbide

被引：0

作者：

Stepanova, N. V. ^{[1
]}

Kuznetsov, V. A. ^{[2
]}

Malutina, Y. N. ^{[1
]}

Terent'ev, D. S. ^{[1
]}

Lozhkin, V. S. ^{[1
]}

Razumakov, A. A. ^{[1
]}

机构：

[1] Novosibirsk State Tech Univ, Prospekt K Marksa 20, Novosibirsk 630073, Russia

[2] Ltd Centrolit S, Novosibirsk 630088, Russia

来源：

OBRABOTKA METALLOV-METAL WORKING AND MATERIAL SCIENCE | 2013年 / 03期

关键词：

cast iron; inoculation; microstructure; mechanical properties;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Nucleation catalyst, consisting of mechanically activated mixture of tungsten carbide and chromium carbide is developed. Original tungsten carbide and chromium carbide powders and its mechanically activated mixture are investigated by the scanning and transmission electronic microscopy. The modifier is a mechanical mixture of particles of chromium carbide, tungsten carbide and titanium. Carbides are located on the surface of chromium, so it is more ductile material. The particles are sub-micron size of the modifier and the developed surface. It is showed, that the usage of developed nucleation catalyst during cast iron casting leads to the strength properties increasing. The developed modifier promotes increase pearlite content and decrease in the length of graphite inclusions. The tensile strength increased by 19.8%, the hardness increased by 13% when the concentration of tungsten carbide 0.0375%.

引用

页码：121 / 126

页数：6