Study on Effects of Pretreatment on Carbide of a Medium-Alloy High Carbon Steel

Yu Mei Dai; Yong Qing Ma

doi:10.4028/www.scientific.net/AMR.194-196.271

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 194-196Study on Effects of Pretreatment on Carbide of a...

Study on Effects of Pretreatment on Carbide of a Medium-Alloy High Carbon Steel

Abstract:

The effect of pre-treatment on carbide transformation and morphology of a medium-alloy high carbon steel (0.86C, 0.84Cr, 1.85W, 0.95Mo, 0.31V) with multi-elements was investigated in this paper. The results show that there are multiple types of carbides (M₃C、M₂₃C₆、M₇C₃、M₆C、MC) in the annealed steel. The morphology of carbide in the annealing microstructure largely relate to the process before annealing. Carbides with disperse spherical and short rod-like distribution exist in the ferritic matrix when the steels are annealed at 820−860°C. The spherical carbides in the ferritic matrix can be obtained by isothermal annealing at 680−720°C after heating at 800°C. The morphology of carbides with different pretreatment process relate to carbide transformation, which can be described by calculating based on phase equilibrium thermodynamic.

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Periodical:

Advanced Materials Research (Volumes 194-196)

Pages:

271-274

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.194-196.271

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Online since:

February 2011

Authors:

Yu Mei Dai, Yong Qing Ma

Keywords:

Carbide Transformation, Medium-Alloy High Carbon Steel, Morpholoy, Pre-Treatment

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References

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DOI: 10.1016/s1359-6454(97)00239-5

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