Effects of RE and Vanadium on Microalloyed Steel
来源期刊：JOURNAL OF RARE EARTHS2002年第1期
论文作者：王怀斌 贾连弟 唐历 林勤 宋波 卢先利
Key words：rare earths; vanadium; precipitation; recrystallization; microalloying;
Abstract: The effects of RE were studied by TEM, SEM, ICP and thermal simulation methods in vanadium microalloyed steel. The content of RE in the solid solution can reach the order of 10-5～10-4 in steel. The solid solution of RE was found to reduce the stability of precipitated V(C,N), impede the precipitation of V(C,N) in austenite, and accelerate and refine the precipitation of V(C,N) in ferrite. The combined effect of RE and V is to delay the dynamic recrystallization, refine the grains and second phase particles, and to promote the precipitation of V(C,N) obviously. Thus the microalloying with RE and V leads to raising the strength and toughness of steel.
王怀斌1，贾连弟1，唐历1，林勤2，宋波2，卢先利3
(1.Panzhihua Iron and Steel (Group;
2.Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China;
3.The Chinese Society of Rare Earths, Beijing 100081, China)
Abstract:The effects of RE were studied by TEM, SEM, ICP and thermal simulation methods in vanadium microalloyed steel. The content of RE in the solid solution can reach the order of 10-5～10-4 in steel. The solid solution of RE was found to reduce the stability of precipitated V(C,N), impede the precipitation of V(C,N) in austenite, and accelerate and refine the precipitation of V(C,N) in ferrite. The combined effect of RE and V is to delay the dynamic recrystallization, refine the grains and second phase particles, and to promote the precipitation of V(C,N) obviously. Thus the microalloying with RE and V leads to raising the strength and toughness of steel.
Key words:rare earths; vanadium; precipitation; recrystallization; microalloying;
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