Effect of Morphology for Novel Bainite/Martensite Dual-Phase High Strength Steel on Its Hydrogen Embrittlement Susceptibility

摘要

The susceptibility to hydrogen embrittlement of bainite/martensite dual-phase high strength steel with different morphologies obtained by the conventional and thernmo-mechani- cal heat treatments has been investigated by means of electrolytic hydrogen charging. The re- sults showed that the finer the microstructure, the lower the sensitivity of steel to hydrogen embrittlement.