Eliminating residual stress in 45 steel quenching specimens by electrical pulse
- 物理技术－已发表论文 
In order to investigate the effect of electrical pulse on eliminating residual stress within metallic material, high-energy electrical pulse was generated by discharging with energy-storage capacitors, and was adopted to treat quenching cold-rolled sheet specimens that were made of 45 high-quality carbon structural steel, and the hole-drilling method was taken to determine the change rule of the residual stress within the specimens before and after electropulse treatment. The pulse current used for electropulse treatment had oscillating waveshape with exponential damping, whose first peak of the current density was 12.2 kA/mm2 and oscillating pulse duration of single treatment was less than 0.8ms. The experimental results show that the amplitude of residual stresses in the two principal directions of 45 steel quenching specimens decrease much more significantly after electropulsing treatment and both of them are homogenized.