MICROSTRUCTURE AND IMPACT TOUGHNESS OF OFFSHORE STEEL

• DOI: 10.24425/118924
• Publication Date: 2023-07-20T16:17:45Z
• Authors: T.-C. Cheng; C. Yu; T.-C. Yang; C.-Y. Huang; H.-C. Lin; R.-K. Shiue
• Keywords: Materials processing; Industrial chemistry

This study focused on the effects of microstructures low-temperature impact toughness directly water-quenched offshore steel.Martensite dominated microstructure below quenched surface.In contrast, mainly lower bainite, martensite, and low amount ferrite were observed in central region specimen.The ductile to brittle transition temperature tempered martensite was significantly than that a bainite-dominated microstructure.It is found low-angle boundaries within bainite packets greatly impair steel.The absence high-angle deteriorates energy steel.