Micro-Metallurgy of Alloy Steels

Whilst extensive literature exists on the effects
on the properties of steels of alloying elements present
in relatively large amounts , data are scanty and disp-ersed on the role of minute additions which exercise
relatively far larger physical and metallurgical effects. The elements involved may be added in traces or present
in residual amounts. It has been endeavoured to highlight the highly beneficial effects of minute additions in many respects, such as those of rare earths to cast plain
carbon and boron- treated steels, to wrought steels, to highalloy stainless steels , etc. The subject is of recent
development , but is of great importance in view of the immense resources in India of the rare earths group of minerals.