title: A method for the monitoring of metal recrystallization based on the in-situ measurement of the elastic energy release using neutron diffraction.
abstract: A method is proposed for the monitoring of metal recrystallization using neutron diffraction that is based on the measurement of stored energy. Experiments were performed using deformed metal specimens heated in-situ while mounted at the sample position of the High Resolution Powder Diffractometer, HRPD (ISIS Facility), UK. Monitoring the breadth of the resulting Bragg lines during heating not only allows the time-dependence (or temperature-dependence) of the stored energy to be determined but also the recrystallized fraction. The analysis method presented here was developed using pure nickel (Ni270) specimens with different deformation levels from 0.29 to 0.94. In situ temperature ramping as well as isothermal annealing was undertaken. The method developed in this work allows accurate and quantitative monitoring of the recrystallization process. The results from neutron diffraction are satisfactorily compared to data obtained from calorimetry and hardness measurements.
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Rue Christian Pauc, BP 50609, 44306 Nantes Cedex 3, France.
authors.forename: F
authors.initials: F
authors.lastname: Christien
authors.affiliation: ISIS Facility, Rutherford Appleton Laboratory, Chilton OX11 0QX, United Kingdom.
authors.forename: M T F
authors.initials: MT
authors.lastname: Telling
authors.affiliation: ISIS Facility, Rutherford Appleton Laboratory, Chilton OX11 0QX, United Kingdom.
authors.forename: K S
authors.initials: KS
authors.lastname: Knight
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Rue Christian Pauc, BP 50609, 44306 Nantes Cedex 3, France.
authors.forename: R
authors.initials: R
authors.lastname: Le Gall