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| BEHAVIOUR OF SECONDARY RECRYSTALLIZATION IN ORIENTED Si STEEL CONTAINING VARIOUS INHIBITORS |
| HE Zhongzhi;SUN Xuefan;SHU AI Renjie Central Iron and Steel Research Institute;Ministry of Metallurgical Industry;Beijing |
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Cite this article:
HE Zhongzhi;SUN Xuefan;SHU AI Renjie Central Iron and Steel Research Institute;Ministry of Metallurgical Industry;Beijing. BEHAVIOUR OF SECONDARY RECRYSTALLIZATION IN ORIENTED Si STEEL CONTAINING VARIOUS INHIBITORS. Acta Metall Sin, 1985, 21(2): 32-36.
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Abstract A comparison was made of the action of various inhibitors to certain highpermeability oriented Si steels on the behaviour of primary and secondary recrys-tallization.It is shown that the inhibitory action of AlN is superior to that ofMnS.The suitable average diameter of the primary grains is 15—20 or 10—12μm for two-stage or single-stage cold-rolling process respectively.The stability ofprimary recrystallized matrix is more important than primary grain size.The(110)[001]secondary grains nucleated preferentially at about 1/5-1/4 thick beneathsurface layer of the hot-rolled band.Such prior secondary recrystallizationnucleus of the steel containing AlN inhibitor is in pancake-like shape and the graingrowth is anisotropy.However,the secondary grain growth of the steel containingMnS inhibitor is isotropic.It seems that the secondary grains in the neighbourhoodof the identical(110)[001]orientation may grow into contact with each otherand coalesce to coarse secondary crystals.
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Received: 18 February 1985
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