Interdendritic liquid

The interpretation of these results is that, in the austenitic mode of solidification, both chromium and nickel segregate to the interdendritic liquid, whereas only nickel segregates in the ferritic mode. The high I (Ni)-values in the ferritic-austenitic steels are remarkable. 

Ganesan S, Poirier DR (1990) Conservation of Mass and Momentum for the Flow of Interdendritic Liquid during Solidification. Metallurgical Transactions B 216 173-181... 

For large solid and liquid conductivities, within the cell the solid, the interdendritic liquid, and the cell liquid can all be in a near-thermal equilibrium. For a temperature change occurring on the boundaries of the cell, the assumption of a uniform temperature within the cell requires that the cell Biot number, that is,... 

Several workers have proposed that Marangoni convection plays a part in the fluid movements of the interdendritic liquid or in bubbles entrapped at the interface during solidiflcation [43]. However, Marangoni flow will tend to be suppressed where the liquid at the interface has a high viscosity and on this basis it is difficult to see how Marangoni flow could affect inter-dendritic fluid flow. 

Hot workability of ledebuiitic tool steels is important economic factor. This means that for each tool steel individuallysafe range of hot working parameters should be revealed. Publications in the literature with regard to the hot workability of tool steels are rare and therefore more information from this research area is desired.The relatively low hot workability of ledeburitic tool steels, i.e. steels in whieh the solidifieation is completed by a eutectic transformation of the residual interdendritic liquid to austenite and various alloy carbides (ledeburitic carbides), is usually characterized by the produetion of surface and internal cracks during the hot deformation. 

The existence of a network of interdendritic channels has been clearly demonstrated " and the way in which the last low melting point liquid to sohdify (Aq < 1) flows is evident by the ease with which tin sweat and phosphide sweat can occm. In these extreme cases of inverse segregation the interdendritic liquid actually bursts through the surface of tho-cast metal to form exudations see Fig. 7.8). It has been shown by Youdelis that this is mainly a result of loss of good thermal contact between the mould wall and the cast metal. 

Cracks of slab usually originate from liquid membrane of interdendritic in high temperature brittle zone which locate in boundary of solid and liquid zone. The interdendritic solute is enriched by uneven heat transfer or inappropriate heat transfer strength when molten steel starts to solidify in the mold. Figure 2 shows the fracture morphology of samples at different temperatures with fix strain of t.Ox 10 s. ... 

In many models, however, it is convenient to work with the volume flow rate of the liquid phase U(u, v). The interdendritic volume flow... 

Two other observations which support the general acceptance that the mechanism of inverse segregation is one of volume contraction on solidification followed ly interdendritic flow of enriched residual liquid to the contracted regions are,... 

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