Effect of Heat Input on Microstructure and Properties of HAZ in Welding of High-manganese Steel
In order to study the effects of different heat inputs on the microstructure and properties of high manganese steel,thermal simulation tests of high manganese steel with different peak temperature and linear energy were carried out by GLEEBLE 3500 thermal simulation testing machine.The microstructure,impact toughness and microhardness distribution of the thermal simulation samples were characterized.The results indicate that the impact toughness and hardness of the sample decrease with the increase of linear energy,and the hardness has a good linear correlation with the reciprocal square root of the average grain size.When the peak temperature Tm=1 300℃,the microcracks in the sample are the main reason for the signif-icant reduction of impact toughness.
high manganese steelthermal simulationpeak temperaturelinear energyimpact toughness
万方数据
维普
