Development of high carbon Fe-Al alloys for tribological applications

被引：0

作者：

Zhu, SM ^{[1
]}

Tamura, M ^{[1
]}

Guan, XS ^{[1
]}

Sakamoto, K ^{[1
]}

Horiya, T ^{[1
]}

Iwasaki, K ^{[1
]}

机构：

[1] Japan Ultra High Temp Mat Res Inst, Yamaguchi 755, Japan

来源：

STRUCTURAL INTERMETALLICS 2001 | 2001年

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Vacuum arc melting and vacuum induction melting techniques were used to produce alloys of Fe-15 wt. % Al (Fe3Al-based) and Fe-25 wt. % Al (FeAl-based) with various carbon contents (0, 0.5, 1 and 2 wt. %). Hot working of the alloys was achieved via isothermal forging or hot extrusion. Carbon addition into Fe-15Al alloy led to a duplex microstructure containing Fe3AlC0.5 and Fe3Al, while formation of graphite was observed in the carbon-added Fe-25Al alloys. With increasing carbon content, the hardness increased significantly in Fe-15Al alloys but exhibited a slight decrease in Fe-25Al alloys. The ductility was evaluated using bending tests and was correlated with the fracture mode. Ball-on-disk sliding wear tests revealed that the coefficient of friction and wear rate were greatly reduced with carbon addition for both the Fe-15Al and the Fe-25Al alloys. The braking wear performance of carbon-added alloys was evaluated with an industry-approved dynamometer by using commercial brake pads, and was compared with that of cast iron, a currently used material for automobile brake rotors.

引用

页码：755 / 763

页数：9

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