Microstructure and Mechanical Properties of Mo2FeB2 Based Cermets with/without Nb Addition

Publisher: Trans Tech Publications

E-ISSN: 1662-7482|2017|872|56-60

ISSN: 1660-9336

Source: Applied Mechanics and Materials, Vol.2017, Iss.872, 2017-11, pp. : 56-60

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Abstract

Four series of Mo2FeB2 based cermets with different Nb content between 0 and 6 wt.% had been successfully fabricated by liquid phase reaction sintering (LPRS). The densification behavior, microstructural characteristics and mechanical properties of Mo2FeB2 based cermets were investigated. The result shows that with the increase of Nb content, the grain size decreased, but more pores formed. Meanwhile, the hardness and transverse rupture strength both be increased first and then decreased. Mo2FeB2 based cermets doped with 4 wt.% Nb content have the highest hardness and TRS of HRA 90.6 and 1970 MPa.