Abstract
In this study a Fe-Cr-W-V alloy was prepared by induction melting and hot rolling. To precipitate carbide particles in the matrix structure, this alloy was heat treated at 1000°C for 30 min, and then subjected to tempering treatment at 700°C for 2h. These particles were extracted from matrix of this alloy and identified by XRD, DTA and TEM analyses and the stoichiometry, size and shape of them were determined. Results were shown mainly two types of carbide precipitated as M7C3 and M23C6 that were spherical and blocky shapes. In addition, very fine precipitates as MC were only detected by TEM. Also, measuring of particle size showed that average diameter of spherical particles and thickness and length of blocky particles were about 80, 60 and 140 nm, respectively.
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