Effect of in-situ synthesis TiC particles on iron based wear resistant surfacing metal
JIA Hua
LIU Zheng-jun
GOU Jian
SU Yun-hai
Abstract：In order to study the influence of in-situ synthesis TiC particles on microstructure and properties of surfacing layer, the Fe-Cr-Ti-C surfacing alloy was prepared on the surface of Q235 steel with the flux cored arc surfacing method.The surfacing alloy was characterized with X ray diffractometer(XRD), scanning electron microscope(SEM)and wet sand wear testing machine.The results show that the addition of Ti element can generate TiC hard phase particles with the in-situ synthesis mode in the surfacing layer, and promote the formation of M7C3 hard phase, which can play the role of refining grain size.When the amounts of the generated TiC and M7C3 hard phases are large and the hard phases disperse in the metal matrix, the hard phases can play the role of corresponding wear resistant skeleton, and thus the wear resistance of surfacing metal gets enhanced.When the mass fraction of Ti element in the cored wire is 7%, the surfacing layer has the optimal performance, the hardness value of surfacing layer is 61.6 HRC, and the wear loss is 0.3904g.
Keywords：flux-cored wireTiC particlesurfacing metalmicrostructurehardnesswear resistancehard phasein-situ synthesis
Publication Date：2017-05-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 275-279 )