Effect of Deformation Temperature on Deformation Resistance of SWRH82B Steel

The deformation resistance of SWRH82B steel during hot deformation was studied with Gleeble-1500 thermal simulator.The stress-strain curves were drawn,and the effect of deformation temperature on its deformation resistance was analyzed.The results showed that under the conditions of varied fixed deformation degrees from 0.3 to 0.8,deformation resistance decreased obviously with the increase of deformation temperature from 860 to 1110℃.When the deformation rate was 0.1,1,10 and 40 s-1,respectively,the higher the deformation temperature,the less the deformation resistance.When the deformation temperatures were 860,910,960,1010,1060 and 1110℃,respectively,there was a mild decline in deformation resistance with the increase of deformation rate.The relationship between deformation temperature and deforming resistance of 82B wire rod was established,σ=162.6283exp(-2.28815T+8.04316),and the fitting accuracy reached above 99%.