Assessment of bias errors caused by texture and sampling methods in diffraction-based steel phase measurements.

Many advanced high-strength steels rely on a metastable austenite phase for improvements in strength and formability. To date, no method has demonstrated the ability to provide accurate austenite phase fraction measurements in textured steels. Several techniques have been proposed, such as averaging the intensity of several peaks and/or summation of intensity from several sample orientations.

Assessment of Martensitic Transformation Paths Based on Transformation Potential Calculations.

Transformation potentials for two different martensitic transformation paths are calculated and compared to experimentally measured austenite textures of an SAE 201 stainless steel. The authors conclude that the → → transformation path is a better match than the → transformation path, based on comparison of the texture evolution and transformation potentials. However, significant plastic deformation is also observed in these samples which occurs simultaneously with the transformation.