Effect of Soaking Temperature on Microstructure and Properties of Dual Phase Steel Containing Niobium and Vanadium
The effect of soaking temperature on the microstructure and properties of dual phase steel containing Nb and V was investigated by a continuous annealing simulator.Results indicated that the strength of samples decreases with the soaking temperature rise.The decrease of the strength was mainly attributed to precipitate particles coarsening and the ferrite grain size growth in samples after annealing.Obvious banded structure was observed within samples after annealed,it was mainly attributed to hot rolled strip structural inheritance.After optimal annealing process,the microstructure was composed of polygonal ferrite and massive martensite (12.8%),and the test steels have excellent mechanical properties: R p0.2=330 MPa,R m=725 MPa,δ=21%,R m×δ=15370.
Dual phase steel Microstructure and properties Precipitation particles coarsening Niobium and vanadium
Wang Xiaopeng Du Linxiu Zhou Min Sun Guosheng
State Key Laboratory of Rolling & Automation,Northeastern University,Shenyang,Liaoning,110819,China CISDI Chongqing Iron & Steel making Plant Integration Co,Ltd. Chongqing,401122,China
国际会议
The 2nd International Symposium on Automobile Steel (第二届汽车用钢生产及应用技术国际研讨会)
鞍山
英文
150-153
2013-05-21（万方平台首次上网日期，不代表论文的发表时间）