摘要
With the thermal simulated technology, the continuous cooling transforming curve （SH-CCT） of domestic X80 was measured, and the variation rule of the microstructure of coarsened-grain heat-affected zone（CGHAZ） for X80 pipeline steel was also investigated. The results indicate that the hardenability and the hydrogen cracking susceptibility of domestic X80 are fairly low.
With the thermal simulated technology, the continuous cooling transforming curve （SH-CCT） of domestic X80 was measured, and the variation rule of the microstructure of coarsened-grain heat-affected zone（CGHAZ） for X80 pipeline steel was also investigated. The results indicate that the hardenability and the hydrogen cracking susceptibility of domestic X80 are fairly low.
