摘要
将25Cr5MoA钢/微合金钢/Q235钢板复合板坯加热到轧制温度950～1100℃,经保温后轧制1道次,压下量为50%～65%,制成25Cr5MoA钢/微合金钢/Q235钢热轧复合板试样.利用剪切实验方法测定了复合板材的界面结合强度,通过光学显微镜观察结合界面的组织.结果表明:当轧制温度为1000～1100℃时,25Cr5MoA钢/微合金钢/Q235钢能有效复合;压下量对25Cr5MoA钢/Q235钢复合板界面结合强度有一定的影响,当压下量达到一定程度后,随着压下量的增加,复合板的结合强度逐渐降低;轧制温度对25Cr5MoA钢/微合金钢/Q235钢复合板界面结合强度影响很大,在道次压下量一定的情况下,随着轧制温度的升高,复合板的结合强度逐渐升高.在1100℃的轧制温度和50%压下量的轧制条件下结合强度达到最大值.
Clad plates of 25Cr5MoA steel/micro-alloyed steel/Q235 steel were prepared with composite slabs heated to the rolling temperature between 950℃ and 1 100℃, held at each temperature for some time, and then rolled one pass under the reduction between 50% and 65%. The interfacial bonding strength was measured by shearing testing and the interfacial metallographic microstructures were observed by optical microscope. The results show that the rolling temperature between 950 ℃ and 1 100 ℃ is favorable to the bonding of the steels. Pass reduction has effect on the bonding strength, and after the pass reduction reaches some value the bonding strength degrades with increasing pass reduction. Rolling temperature is crucial to the bonding strength, and as the temperature rising, the bonding strength increases gradually under the same reduction. The bonding strength reaches the maximum value at a rolling temperature of 1 100 ℃ and a pass reduction of 50%.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2009年第2期186-192,共7页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.50675020)
关键词
复合板
复合轧制
结合强度
结合界面
轧制温度
道次压下量
clad plates
composite rolling
bonding strength
bonding interface
rolling temperature
pass reduction
