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| DISTRIBUTION OF V IN PHASES OF NORMALIZED STEELS AND EFFECT OF RARE EARTH |
| by LIU Zongchang (Baotou Institute of Iron and Steel Technology); YANG Zhiji (Baotou Research Institute of Rare Earth) (Manuscript received 23 March; 1986; revised manuscript 13 February; 1987) |
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Cite this article:
by LIU Zongchang (Baotou Institute of Iron and Steel Technology); YANG Zhiji (Baotou Research Institute of Rare Earth) (Manuscript received 23 March; 1986; revised manuscript 13 February; 1987). DISTRIBUTION OF V IN PHASES OF NORMALIZED STEELS AND EFFECT OF RARE EARTH. Acta Metall Sin, 1987, 23(6): 531-533.
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Abstract The existence form of V in normalized medium carbon HSLA steels has been investigated by means of extractive analysis and TEM. The results show that the amount of carbides diminishes and the relative amount of ferrite increases after normalizing at 950℃. Most of V precipitates in the form of VC and a little dissolves in the cementite. Addition of rare earth suppresses the precipitation of VC markedly. The dissolved rare earth causes CCT curves shift to the right and increases stability of the undercooling austenite, thus changes the form of decomposition products.
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Received: 18 June 1987
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1 Picketing F B. Physical Metallurgy and the Design of Steels, London: Applied Science. 1978; 104-105
2 杨植玑,刘沃恒.钢铁,1986;(4) :36-40
3 余宗森,褚幼义.钢中稀土,冶金工业出版社,1982:121-151
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