焊后冷速对大型石油储罐用钢热影响区组织性能影响
Effects of Post-welding Cooling Rate on Microstructure and Properties of HAZ of Large Oil Storage Tank Steel
刘小林1,2, 王立军1 , 蔡庆伍1 , 武会宾1
点击:3470次 下载:0次
作者单位:(1. 北京科技大学 冶金工程研究院,北京100083; 2. 新余钢铁股份有限公司技术中心,江西 新余338001)
中文关键字:石油储罐用钢; 热模拟技术; 组织; 硬度
英文关键字:large oil storage tank steel; thermal simulated technology; microstructure; hardness
中文摘要:利用热模拟技术研究了焊后冷却速度对大型石油储罐用钢焊接热影响区组织性能的影响。研究发现:随着冷速的降低,焊接热影响区的硬度显著降低,焊接热影响区的主要组织由板条贝氏体到粒状贝氏体再到针状铁素体。
英文摘要:The influence of post-welding cooling rate on microstructure and properties of HAZ of large oil storage tank steel were studied by the thermal simulated technology。The results show that the hardness of HAZ reduces obviously with the decrease of cooling rate;with the reduction of cooling rate, the major microstructure of HAZ is transformed to granular bainite and to acicular ferrite from lath bainite.