北京科技大学学报2012，Vol.34Issue(2)：137-142,6.
锆对含钛F40级船板钢粗晶热影响区低温韧性的影响
Effect of zirconium on the low-temperature toughness of CGHAZ in F40 ship plates containing titanium
摘要
Abstract
Weld thermal simulation experiments of F40 ship plates with 0.01% zirconium or not under different phase-change cooling time T8/5 were conducted on a Gleeble3500 thermal simulation test machine.The results show that the anti-large heat input welding performance is improved significantly for F40 ship plates containing titanium by adding trace amounts of zirconium,and the impact energy reachs 238J at-60 ℃ when T8/5 is 100s.The microstructure of the coarse grain heat affected zone（CGHAZ） in the F40 ship plates was studied by thermodynamic calculations and scanning electron microscopy.It is indicated that the size and mophyloy of original complex inclusions containing zirconium change with increasing T8/5.Therefore the number of the inclusions of 1 to 3 μm including zirconium which contribute to acicular ferrite nucleation non-monotonically decreases,leading to the toughness fluctuation of the CGHAZ with the welding heat input increasing.关键词
造船材料/钢板/热影响区/低温性能/韧性/锆/针状铁素体Key words
shipbuilding materials/plates/heat affected zone/low-temperature properties/toughness/zirconium/acicular ferrite分类
金属材料引用本文复制引用
武会宾,侯敏,梁国俐,唐荻..锆对含钛F40级船板钢粗晶热影响区低温韧性的影响[J].北京科技大学学报,2012,34(2):137-142,6.基金项目
“十一五”国家科技支撑计划炼钢--轧钢综合节能与环保技术项目 （）
