Extracting grain-orientation-dependent data from in situ time-of-flight neutron diffraction. I. Inverse pole figures

摘要: The problem of calculating the inverse pole figure (IPF) is analyzed from perspective application time-of flight neutron diffraction toin situmonitoring thermomechanical behavior engineering materials. On basis a quasi-Monte Carlo (QMC) method, consistent set grain orientations generated and used to compute weighting factors for IPF normalization. are instrument dependent were calculated materials diffractometer VULCAN (Spallation Neutron Source, Oak Ridge National Laboratory). QMC method applied face-centered cubic structures can be easily extended other crystallographic symmetries. Examples include 316LN stainless steelin situloaded in tension at room temperature an Al–2%Mg alloy, substantially deformed by cold rolling situannealed up 653 K.