Small-angle neutron scattering (SANS) and energy-filtered transmission electron
microscopy (EFTEM) were employed to characterise the
precipitation behaviour in the high-speed steel HS6-5-2 during tempering. With SANS
the evolution of the size distribution of precipitates
during isothermal tempering at 590 ◦C was investigated. The SANS results are
discussed assuming that three populations of precipitates
can be distinguished during tempering at 590 ◦C. The smallest population with
