The void left after metal has been removed by thermal
Steel deoxidized with a strong deoxidizing
agent, such as silicon or aluminium, to reduce the oxygen content to such a
level that no reaction occurs between carbon and oxygen during solidification.
The term killed indicates that the steel has
been sufficiently deoxidized to quiet the molten metal when poured into the
ingot mold. The general practice is to use aluminum ferrosilicon or manganese as
deoxidizing agents. A properly killed steel is more uniform as to analysis and
is comparatively free from aging. However, for the same carbon and manganese
content Killed Steel is harder than Rimmed Steel. In general all steels above
0.25% carbon are killed, also all forging grades, structural steels from 0.15%
to 0.25% carbon and some special steels in the low carbon range. Most steels
below 0.15% carbon are rimmed steel.
Kind Band (deformation)
In polycrystalline materials, a volume of
crystal that has rotated physically to accommodate differential deformation
between adjoining parts of a grain while the band itself has deformed
homogeneously. This occurs by regular bending of the slip lamellae along the
boundaries of the band.