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Acta Metall Sin  1986, Vol. 22 Issue (6): 81-83    DOI:
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ON THE ORDERED NIOBIUM CARBIDE IN MICROALLOY STEELS
by YONG Qilong; ZHENG Lu; SUN Zhenbao (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing)
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by YONG Qilong; ZHENG Lu; SUN Zhenbao (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing). ON THE ORDERED NIOBIUM CARBIDE IN MICROALLOY STEELS. Acta Metall Sin, 1986, 22(6): 81-83.

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Abstract  The precipitated niobium carbide is revealed to be ordered in ferrite in 3 different microalloyed steels containing Nb about 0.08—0.24%. This ordered niobium carbide may be formulated as Nb_8C_7~′(NbC_(0.875)~′) which is formed by ordered omission of its C atoms. With the reciprocal lattice indexes or orientation relationship of transformation matrix between the ordered niobium carbide and α-Fe, the composite electron diffraction patterns can be conveniently indexed.
Received:  18 June 1986     
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