THE EFFECT OF FERRITE ON THE MECHANICAL PROPERTIES OF A PRECIPITATION HARDENING STAINLESS STEEL
WATERVLIET ARSENAL NY
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The primary object of this study was to determine the effect of ferrite and its orientation upon the mechanical properties of a precipitation hardening stainless steel with particular attention to the short transverse properties. The investigation consisted of four major parts the preliminary investigation of billet properties the effect of forging reduction and ferrite content upon mechanical properties the effect of notch orientation upon impact strength and the relationship of heat composition to ferrite content. Low ductility and impact strength in the short transverse direction were found to be associated with the orientation and shape of the ferrite plates. It was also determined that notch orientation had a direct effect upon the values obtained in impact testing. The overall investigation showed that high ferrite contents in general had a deleterious effect upon mechanical properties and that the ferrite content could be minimized by exercising rigorous control of the heat composition.
- Properties of Metals and Alloys