抄録
The liquid phase sintering of Fe-6 wt%B-(38-53) wt%Mo-(0-10) wt%Cr alloys is studied by means of DTA, dilatometric measurements and microstructural observations. In addition, the mechanical properties of the sintered alloys are discussed. The results can be summarized as follows.
(1) With the increase of the Cr content, the temperature ranges of L1 and L2 reactions, γ-Fe+Fe2B→L1 and γ-Fe+Mo2FeB2→L2, shift to higher temperature.
(2) As the Mo content increases, the temperature ranges of the L1 and the L2 reactions rise up when the Cr content is fixed.
(3) The Cr distributes uniformly in Mo2FeB2, in the hard phases containing a small amount of Fe2B and in a ferrous binder.
(4) Transverse-rupture strength values around 2.0 GPa are obtained for the Cr content up to 5 wt%.
