Physical Simulation and Experimental Examination of εCu Particles Dissolution Evolution During Welding of Copper Precipitation Strengthening Steel

钢铁研究学报(英文版), 2007, 14(6): 58-0.

Physical Simulation and Experimental Examination of εCu Particles Dissolution Evolution During Welding of Copper Precipitation Strengthening Steel

WANG Qingfeng , SHANG Chengjia , CHEN Dawei , CAI Jianwei , CHEN Weichang

Keywords： εCu particle dissolution;hardness;kinetics;steel;welding;physical simulation

The kinetics of εCu particles dissolution in the matrix during welding of a copperprecipitation strengthening steel was determined by a combination of GleebleTM physical simulation, TEM examination and hardness measurement. The εCu particles underwent a coarsening and part dissolution and then complete dissolution reaction as the peak temperature increased from 750 to 1 000 ℃, which resulted in the decrease in the number density of εCu particles and hardness in the heataffected zone (HAZ). The results can be used to understand the evolution of this transformation and a softening behavior of the HAZ during welding of this type of steel.

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Physical Simulation and Experimental Examination of εCu Particles Dissolution Evolution During Welding of Copper Precipitation Strengthening Steel

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