摘要
研究了变形后冷却工艺对V微合金化以及不含V螺纹钢中纳米析出物的影响,在热模拟试验机上进行了变形后不同冷却工艺的试验,采用透射电镜和能谱仪对螺纹钢的析出物进行了观察和分析。结果表明,含V螺纹钢高温变形后直接空冷有利于细小的VC均匀析出,提供更好的析出强化效果;不含V螺纹钢高温变形后在650℃保温30 min有利于纳米级渗碳体的析出。研究结果为螺纹钢轧后冷却工艺的制定提供了理论依据。
The effect of cooling process after deformation on V micro-alloyed and V-free rebar was studied. The thermal simulation experiments were carried out with different cooling processes after deformation. The transmission electron microscopy and energy spectrometer were employed to observe and analyze precipitation of the tested steels. The results show that air cooling after high temperature deformation benefits the fine VC precipitation for rebar containing V, providing a better precipitation strengthening effect. For V-free rebar, holding for 30 min at 650 ℃after high temperature deformation is beneficial to the precipitation of nanoscale cementite. The study provides a theoretical basis for the establishment of cooling process after rolling in rebar production.
出处
《钢铁钒钛》
CAS
北大核心
2015年第2期28-32,共5页
Iron Steel Vanadium Titanium
关键词
螺纹钢
V微合金化
冷却工艺
析出物
热模拟
rebar, V micro-alloyed, cooling process, precipitation, thermal simulation
