Effects of Rare Earths on Cast Microstructure and Mechanical Properties of 8Cr4MoV Cold Work Roll Steel

Guo Sheng Wu; Zhu Tao Xu; You Deng Zhang

doi:10.4028/www.scientific.net/AMR.630.50

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 630Effects of Rare Earths on Cast Microstructure and...

Effects of Rare Earths on Cast Microstructure and Mechanical Properties of 8Cr4MoV Cold Work Roll Steel

Abstract:

Cast performance study of 8Cr4MoV cold work roll steels with four kinds of different rare earth content was carried out in the laboratory, the steels smelting by 50kg vacuum induction furnace, atmospheric casting, processing sample after annealing, then inspecting the microstructure, mechanical properties and micro-fracture characteristics of the steels; The results showed that the steels’ microstructure fine, micro-hardness and tensile strength increased with increasing rare earth content, while the shrinkage to eliminate, the micro-fracture characteristics of the tensile specimen showed a tendency of the cleavage unit narrowing and reduction of secondary cracks, and also the ductility improved.

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Periodical:

Advanced Materials Research (Volume 630)

Pages:

50-53

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.630.50

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Online since:

December 2012

Authors:

Guo Sheng Wu, Zhu Tao Xu, You Deng Zhang

Keywords:

8Cr4MoV, Cast Steel, Mechanical Property, Microstructure, Rare Earth (RE)

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References

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