Quantitative phase analysis of duplex stainless steel using incomplete pole figures

The use of a single, accurate, and relatively quick experimental method sui table for determination of crystallographic texture and amounts of phases i n the final product is of interest to some manufacturers. The suitability o f an X-ray method for this purpose is evaluated in the present paper. The S chulz back reflection technique has been used to record incomplete pole fig ures of ferrite and austenite in a sample of commercial duplex stainless st eel tube. The orientation distribution function was calculated for each pha se and then used for the reproduction of complete pole figures. The complet e pole figures were applied in quantitative phase analysis (QPhA), by a new method, free from texture induced errors. For comparison, the volume fract ion of austenite and ferrite was also determined by means of the classic di rect comparison method of Averbach and Cohen as well as by standard quantit ative metallography. The proposed method of QPhA was applied for the examin ation of the amount of retained austenite in certain bearing construction e lements. MST/3993.