再结晶和相变的交互作用对双相钢组织特征的影响  

Effect of Interaction Between Recrystallization and Transformation on Microstructure of Dual Phase Steel

作　　者：张学辉[1,2] 朱国辉[1,3] 毛卫民[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]武钢股份有限公司生产技术部,湖北武汉430083 [3]安徽工业大学材料科学与工程学院,安徽马鞍山243002

出　　处：《钢铁》2009年第9期86-89,共4页Iron and Steel

摘　　要：系统地研究了不同的热处理工艺对双相钢组织特征的影响。研究的结果表明,存在一个临界两相区退火温度。当退火温度高于此临界退火温度,双相钢组织表现出带状铁素体的特征;而低于临界温度的退火可以得到典型的马氏体和铁素体等轴状组织的特征,这是由于冷轧钢板在两相区退火过程中的相变和再结晶过程交互作用的结果。当相变先于再结晶发生时会形成带状铁素体。预先的低温再结晶处理可以消除铁素体带状组织。Effect of thermal processing on microstructures in dual phase steels was systematically investigated. The experimental results illustrated that there exists a critical temperature during intercritical annealing in cold-rolled dual phase steels. Microstructure characterized by band-like ferrite was observed when the annealing temperature above the critical temperature, whereas typical dual-phase microstructure characterized by martensite dispersed around fetrite was observed. The experimental results were interpreted by interaction between recrystallization and phase transformation during intercritical annealing of cold-rolled dual phase steels. The band-like ferrite was formed because phase transformation occurred prior to recrystallization, which could be eliminated by pre-recrystallization at lower temperature.

关 键 词：双相钢 两相区退火 临界温度 相变 再结晶 

分 类 号：TG142.1[一般工业技术—材料科学与工程]