Plasticity And Microstructure Of Tc4 Alloy Subjected To The High Magnetic Field Tensile Test

The tensile test of TC4 alloy was carried out in the presence of a high pulsed magnetic field. The effects of magnetic induction intensity (B=0, 1, 3, 5 T) on the elongation, phase characteristics, crystal structure and dislocation density were investigated. The results show that the imposed magnetic field enhances the elongation. At 3 T the elongation arrives at the maximum of 12.41%, which is enhanced by 23.98% compared to that of 0 T sample. The 3 T parameter is ascertained as a traverse point from an increase tendency to a decrease one. Furthermore, the magnetic field accelerates the phase transformation from beta to alpha together with the orientation preference of crystal plane along the slipping direction. The dislocation density first increases and then falls. At 3 T it arrives at the utmost. The phenomenon is attributed to the enhancement of dislocation strain energy in the presence of magnetic field. Next, the magnetic field promotes the transition from singlet to triplet state. At last the inevitability of optimized 3 T parameter was further discussed in the quantum view.