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In Situ Production of (Fe,Cr)7C3 Particulate Bundles Reinforced Iron Matrix Composites

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Abstract:

In-situ production of (Fe,Cr)7C3 particulate bundles -reinforced iron matrix composite was prepared by infiltration casting between Cr wires and white cast iron at 1200°C plus subsequent heat treatment. The composites under different heat treatment times were comparatively characterized by scanning electron microscopy (SEM) and pin-on-disc wear resistance tests. The results show that the area of the particle bundles gradually increases with the heat treatment time increasing, and the chemical compositions change from eutectic to hypoeutectic, the morphologies of the reinforcements present chrysanthemum-shaped, granular and intercrystalline eutectics. Under 5 N loads, the composites appear excellent wear resistance, which is 36 times for the reference sample.

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Periodical:

Advanced Materials Research (Volumes 602-604)

Pages:

456-459

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.602-604.456

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Online since:

December 2012

Authors:

Jing Lai Tian, Fang Xia Ye, Li Sheng Zhong, Yun Hua Xu

Keywords:

Composite, In Situ, Particulate Bundle, Wear Resistance

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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