Affiliation:
1. Xi′an University of Science and Technology
2. Xi’an University of Architecture and Technology
3. Xi'an University of Science and Technology
Abstract
A kind of (Fe,Cr)7C3particles reinforced iron matrix composite was prepared by metallurgical bonding between Cr wires and gray cast iron at 1200°C with subsequent heat treatment. The obtained composites were comparatively characterized by XRD, SEM and microhardness tests. The results showed that the composites mainly consisted of α-Fe matrix and the reinforcements of particle bundles, which include (Fe,Cr)7C3 carbides and γ-Fe. The cross-section of the reinforcements gradually increase with heat treatment time, and the microstructures change from eutectic to hypoeutectic, the morphologies of the reinforcements present chrysanthemum-shaped, granular and intercrystalline eutectics.
Publisher
Trans Tech Publications, Ltd.