Effect of Nb on Microstructure Evolution in Cold Rolled Dual-Phase Steels:Interaction of Recovery,Recrystallization and Phase Transformations

作     者：Pottore N Fonstein N Bhatta Charya D Jansto S 

作者机构：ArcelorMittal Global R and D3001 E Columbus DrEast ChicagoIN 46312USA CBMM-Reference Metals Company1000 Old Pond RoadBridgevillePA 15017USA 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2011年第18卷第S1期

页      面：228-232页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：niobium dual-phase steel recovery recrystallization phase transformation 

摘      要：The effects of Nb addition,individually and in combination with Ti,were evaluated over a range of coiling *** temperature influences the ratio of soluble and precipitated Nb in the hot rolled steel containing 0.08 % C and 2.2 % *** bearing precipitates can co-precipitate on TiN and impact the microstructure and mechanical properties of the steel after annealing *** characterization revealed that recovery and recrystallization processes preceded austenite *** effects of Nb on austenite formation in cold rolled steels during heating and isothermal holding and on austenite decomposition during subsequent cooling were investigated using *** addition of Nb retarded ferrite recrystallization starting temperature,but had no significant effect on the starting temperature of austenite formation during *** Nb addition also accelerated austenite formation once the transformation started,and was beneficial for the formation of a finer and homogeneous microstructure.