Dong Xianchun, Zhang Xi, Chen Yanqing. Microstructure and Toughness in the Coarse Grain Region of Low Carbon Bainite High Strength Steel Plate for Q690CFD[J]. IRON STEEL VANADIUM TITANIUM, 2011, 32(1): 62-66.
Citation:
Dong Xianchun, Zhang Xi, Chen Yanqing. Microstructure and Toughness in the Coarse Grain Region of Low Carbon Bainite High Strength Steel Plate for Q690CFD[J]. IRON STEEL VANADIUM TITANIUM, 2011, 32(1): 62-66.
Dong Xianchun, Zhang Xi, Chen Yanqing. Microstructure and Toughness in the Coarse Grain Region of Low Carbon Bainite High Strength Steel Plate for Q690CFD[J]. IRON STEEL VANADIUM TITANIUM, 2011, 32(1): 62-66.
Citation:
Dong Xianchun, Zhang Xi, Chen Yanqing. Microstructure and Toughness in the Coarse Grain Region of Low Carbon Bainite High Strength Steel Plate for Q690CFD[J]. IRON STEEL VANADIUM TITANIUM, 2011, 32(1): 62-66.
The microstructure and toughness of the coarse-grained heat-affected zone(CGHAZ) of low carbon bainite high strength steel for Q690CFD with different welding processes were investigated by thermal simulation with a Gleeble-2000 thermal simulator.The experimental results indicate that the lath martensite is the dominate microstructure of the CGHAZ,and the toughness of CGHAZ decreases with cooling time increase at 500~800℃.With the stress relief(SR) temperature increasing,the impact toughness of the CGHAZ decreases.The CGHAZ has good toughness when the SR temperature at 250~500℃.
DownLoad: