STEEL SHEET HAVING HIGH STRENGTH AND LOW DENSITY AND METHOD OF MANUFACTURING SAME

摘要

A steel sheet having high strength and low density and a method of manufacturing same are disclosed. The steel sheet having high strength and low density, which is an aspect of the present invention, is characterized in that an Fe-Al-based intermetallic compound having an average particle diameter of 20 ㎛ or less is homogeneously dispersed in an austenite matrix, the volume fraction of the Fe-Al-based intermetallic compound is 1 to 50 %, and the volume fraction of κ-carbide ((Fe,Mn)3AlC) which is a perovskite carbide and has an L12 structure is 15 % or less.