SIZE DISTRIBUTION AND BEHAVIOUR OF VC PARTICLES IN FERRITIC NODULAR CAST IRON

Acta Metall Sin

1992, Vol. 28

Issue (9): 57-62 DOI:

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SIZE DISTRIBUTION AND BEHAVIOUR OF VC PARTICLES IN FERRITIC NODULAR CAST IRON

WANG Yu; SONG Weixi; HAN Qiyong (University of Science and Technology Beijing)

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WANG Yu; SONG Weixi; HAN Qiyong (University of Science and Technology Beijing). SIZE DISTRIBUTION AND BEHAVIOUR OF VC PARTICLES IN FERRITIC NODULAR CAST IRON. Acta Metall Sin, 1992, 28(9): 57-62.

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Abstract Size distribution and precipitation of VC particles in the ferritic nodular cast iron have been examined by techniques of ultrasonic screening, small angle X-ray scattering and chemical dissolution.The VC particles are sized over a wide range. The superfine ones, dispersed in the ferrite matrix, are the large majority. A saturated dispersion with ultrafine VC particles may be approached as the increasing of V content in the iron. This seems to play an important role in the precipitation strengthening for ferritic noldular cast iron.

Key words: nodular cast iron ferrite size distribution VC particle

Received: 18 September 1992

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