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Effect of Austenization Temperatures and Times on Hardness, Microstructure and Corrosion Rate of High Carbon Steel

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Design and Computation of Modern Engineering Materials

Part of the book series: Advanced Structured Materials ((STRUCTMAT,volume 54))

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Abstract

High carbon steel is characterized by good toughness and high hardness, especially after an appropriate heat treatment. In this work heat treatment of 0.75 % carbon steel with 4.50 % Mo, including heating to a different austenitic phase (850, 900 and 950 °C) and holding for different times (30 min and 1 h), then cooling by different media is considered. The results show no noticeable increase in the hardness at 850 °C, but at 900 °C changing in hardness values can be observed clearly with oil and water quenched specimens, at 950 °C there is a significant changing in hardness values in all quenching media even at air and furnace cooling. As Austenization temperature increase, the hardness of the samples increases especially for samples cooled with oil and water at 950 °C. Tests showed that the microstructures contain carbides, that carbides did not completely melted even at the temperature of 1,050 °C due to percentage of molybdenum which produces stable carbides until melting.

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Correspondence to Mohamed A. Gebril .

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© 2014 Springer International Publishing Switzerland

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Gebril, M.A., Aldlemey, M.S., Kablan, A.F. (2014). Effect of Austenization Temperatures and Times on Hardness, Microstructure and Corrosion Rate of High Carbon Steel. In: Öchsner, A., Altenbach, H. (eds) Design and Computation of Modern Engineering Materials. Advanced Structured Materials, vol 54. Springer, Cham. https://doi.org/10.1007/978-3-319-07383-5_30

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  • DOI: https://doi.org/10.1007/978-3-319-07383-5_30

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-07382-8

  • Online ISBN: 978-3-319-07383-5

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