Do metallic bonds contain London dispersion forces?
If by "Fe particles" you mean distinct particles (as opposed to the atoms inside a continuous Fe crystal structure), then the answer would be VdW/London forces. 

From wikipedia:

This is the only attractive intermolecular force present between neutral atoms


Which, in a way, can be applied to particles or particle surfaces as well, as long as they're not charged.

Whereas, if you are talking about a continuous iron crystal structure, and by particles you mean atoms within that structure, then you have a metal-type bond between them caused by delocalization of electrons into the conductive band. See wikipedia for further details.