EH40高强船板低温韧性研究与改善  

Analysis and Improvement of Low-temperature Toughness in High-strength Hull Plate EH40

作　　者：昌发祥 周光杰[2] 刘晓玮[2] 胡增 CHANG Faxiang;ZHOU Guangjie;LIU Xiaowei;HU Zeng(Hunan Shengli Xianggang Steel Pipe Co.,Ltd.,Xiangtan411101,China;Xiangtan Iron&Steel Group Co.,Ltd.,Xiangtan411101,China)

机构地区：[1]湖南胜利湘钢钢管有限公司,湖南湘潭411101 [2]湘潭钢铁集团有限公司,湖南湘潭411101

出　　处：《金属材料与冶金工程》2025年第2期12-16,共5页Metal Materials and Metallurgy Engineering

摘　　要：针对10~14 mm高强船板低温韧性波动的现象,采用统计分析和金相观察的方法进行研究。结果表明:组织中连续的带状贝氏体组织是导致钢板低韧性的原因。通过成分和工艺调整,防止钢板在空冷冷速下出现贝氏体转变,避免连续的带状贝氏体组织出现,从而提高了钢板的低温韧性。Due to the phenomenon of fluctuations in low-temperature toughness in 10~14mm high-strength hull plates,a study was conducted using statistical analysis and metallographic observation.The results indicate that the presence of continuous banded bainite in the microstructure is the cause of the low toughness.By adjusting the chemical composition and process parameters,the formation of bainite during air cooling was prevented,thus avoiding the appearance of continuous banded bainite and effectively improving the lowtemperature toughness of the steel plates.

关 键 词：高强船板 TMCP工艺 韧性 组织 

分 类 号：TG142.1[一般工业技术—材料科学与工程]