北京科技大学学报2012，Vol.34Issue(7)：788-792,5.
焊接热循环参数对大线能量焊接用钢EH40热影响区组织和性能的影响
Effect of welding thermal cycle parameters in the heat affected zone of steel EH40 for on the microstructure and properties high heat input welding
摘要
Abstract
The effects of welding thermal cycle parameters on the microstructure and properties in the heat affected zone （HAZ） of hull structure steel for high heat input welding were studied by thermal simulation technique, optical microscopy and transmission electron microscopy （TEM）. It is found that the microstructure of the simulated HAZ is mainly composed of granular bainite, ferrite and pearlite, but it varies markedly with the change of peak temperature and cooling time. The overall level of impact toughness of the simulated HAZ is higher than 200 J, and the impact toughness does not monotonously change with the peak temperature and the cooling time increasing. The amount, size, distribution and shape of M-A constituents in the simulated HAZ are the main influencing factors on the impact toughness.关键词
造船材料/钢板/焊接/热影响区/组织/韧性/热循环Key words
shipbuilding materials/plates/welding/heat affected zone/microstructure/toughness/thermal cycling分类
金属材料引用本文复制引用
李静,王华,曲圣昱,王佳骥,付魁军,及玉梅,刘芳芳..焊接热循环参数对大线能量焊接用钢EH40热影响区组织和性能的影响[J].北京科技大学学报,2012,34(7):788-792,5.基金项目
国家科技支撑计划资助项目 （）
