摘要
在获得无碳化物贝氏体／马氏体复相钢奥氏体晶界侵蚀方法的基础上，利用电致加热循环淬火方法对无碳化物贝氏体／马氏体复相钢进行组织超细化处理，研究了奥氏体化温度、加热速率、循环次数和保温时间对钢的组织和原奥氏体晶粒的影响。实验结果表明：以100℃/s的加热速度加热到910—920℃淬火，循环3次，前两次淬火不保温，最后一次保温30s，可得到平均晶粒度为3．2μm，超高周疲劳性能优异的超细化无碳化物贝氏体／马氏体复相钢。
Based on the erosion method of revealing austenite grain boundaries of the CFB/M dual phase steel, its microstructure is ultra-refined by the electrical contact heating technology. Effect of the austenitizing temperature, heating rate, cycles and holding time on the microstructure and original austenite grain is investigated. The experimental results show that the CFB/M dual phase steel is heated three times at the rate of 100℃/s and quenched at the range of 910-920℃ without holding at the previous two times of qenehing and holding 30 s at last time, so as to gain the best properties with average grain size of 3.2μm and ultrahigh-cycle fatigue.
出处
《热处理技术与装备》
2010年第1期10-16,共7页
Heat Treatment Technology and Equipment
基金
973项目
长寿命贝氏体/马氏体复相高强高韧钢的研究(2004CB619105)
