Effect of Controlled Rolling and Controlled Cooling on Mechanical Properties of Low Carbon Nb-Ti-B Steels
Continuous cooling transformation diagram of low carbon Nb-Ti-B steel hot deformation was determined by using Gleeble-1500 hot simulator. Effect of controlled rolling and controlled cooling on developing of high strength plate girder for automobile by FTSR process was investigated. Microstructure morphology and precipitates of experimental steel were observed by OM, SEM, TEM. Thermal simulation results revealed that bainite structure could be obtained at a cooling rate more than 10℃/s adding with Nb, Ti, B microalloy elements. The results indicated that the properties of experimental steel would be better when controlled rolling and cooling in recrystallization and non-recrystallization areas separately, ferrite could be refined to 5～10μm. After rolling, the phase transition temperature of plate was controlled by laminar cooling and the composition of organization would be controlled.
controlled rolling and controlled cooling FTSR microalloying beam plate for automobile
ZHANG Cheng-wu LU Jun-hui XIE Chang-suo PIAO Feng-yun WANG Ping-yuan LIU Jia-qi WANG Chun-cheng QIU Sheng-tao HAN Wei JU Dian-chun
Technology Center, Toughua Iron and Steel Group Co.Ltd, Tonghua 134000, China National Engineering Research Center of Continuous Casting Technology, CISRI, Beijing 100081, China
国际会议
2009年薄板坯连铸连轧国际研讨会(TSCR 2009)(2009 International Symposium on Thin Slab Casting and Rolling)
南京
英文
413-419
2009-05-13（万方平台首次上网日期，不代表论文的发表时间）