A study of Ti/Fe contact reaction structures

Abstract

This work was carried out at temperatures of 1100 - 1140°C for holding times in the range 10 - 90 s. The solution mechanisms of the base metals of the Ti/Fe contact reaction couples and the growth rules of the Ti-Fe compound and β-Ti(Fe) were studied. The results show that the solution process of the base materials is transient, counted by the time in Ti/Fe contact reaction couples. It can be seen that the quantities of the Ti-Fe compound and β-Ti(Fe) can be reduced effectively through controlling the holding time. When temperature is 1100°C and the holding time is less than 10 s, there is no coarse block Ti-Fe compound in the contact reaction liquid phase zone, and the growth process of the lamellar β-Ti(Fe) experiences a latent period. When the holding time reaches 30 s, the density of the lamellar β-Ti(Fe) reaches a maximum value. The thickness of the liquid phase zone reaches 60 μm at a temperature of 1100°C and a holding time of 10 s.

Keywords

TITANIUM IRON CONTACT REACTION GROWTH OF COMPOUND REACTION LAYER

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