Stress evaluation using multi-peaks

Harjo, S.   ; Gong, W.   ; Kawasaki, Takuro   

In-situ neutron diffraction was used to study tensile deformation in an extruded AZ31 alloy. The aim was to validate existing methods and develop new ones for stress evaluation in magnesium alloys. Results showed varied increases in lattice strains among grains, posing challenges for conventional procedures. A new method, considering grain volume fraction and multiple orientations, proved highly accurate. When simultaneous hk.l peaks weren't available, the 12.1 peak was recommended for stress evaluation, showing a linear relationship with applied stress throughout deformation.