摘要
利用热模拟技术模拟无裂纹钢CF - 6 2的焊接热循环过程 ,得到较宽的过热粗晶区 ,进而研究了无裂纹钢在焊后热处理过程中的再热脆性。结果表明CF - 6 2钢具有较强的再热脆化倾向 ,应避免对CF - 6 2钢焊接结构件进行焊后热处理。讨论了焊后热处理引起脆化的原因。
A larger heat-affected-zone(HAZ) of crack-free steel CF-62 is obtained while CF-62 is simulated its welding thermal-cycling procedure by the thermal simulation technology. Then the reheating embrittlement of crack-free steel during post-welding heat treatment is studied. The results indicate that CF-62 steel shows an obvious tendency to embrittlement during post welding heat treatment. Therefore, it is suggested that CF-62 should avoid being post-welding heat-treatment. And the reasons of reheating embrittlement are also discussed.
出处
《辽宁工学院学报》
2001年第1期4-7,共4页
Journal of Liaoning Institute of Technology(Natural Science Edition)
关键词
无裂纹钢
再热脆性
热模拟
焊后热处理
低碳合金钢
crack-free steel
reheating embrittlement
thermal simulation
post-welding heat treatment
