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Decomposition of Retained Austenite in a High-Speed Steel GPM A30

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Abstract

The effect of tempering on the decomposition of retained austenite in a powder metallurgy (PM) high-speed steel, GPM A30, has been monitored with a high-speed dilatometer. The corresponding microstructures of specimens with different tempering cycles have been investigated by a combination of scanning electron microscopy and analytical transformation electron microscopy. The as-quenched structure of the steel studied is composed of retained austenite, untempered martensite, and carbides. The results indicate that the complete transformation of retained austenite can be more nearly accomplished by double or triple tempering cycles than by a single long-time cycle. The possible transformation mechanism for the decomposition of retained austenite during multiple tempering cycles is attributed to the invariant-plane-strain of the prior martensitic transformation extending accommodation defects to the adjacent retained austenite, which favors further transformations in the subsequent tempering operations.

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Notes

  1. GPM A30 is a powder metallurgy (PM) high-speed steel grade produced by Gloria Material Technology Corporation (GMTC)

References

  1. F.B. Pickering, Materials Science and Technology: A Comprehensive Treatment, Vol 7, R.W. Cahn, P. Haasen, and E.J. Kramer, Ed., Wiley-VCH Publisher, New York, Dec., 1991, p 593-597

  2. T. Mukherjee, Physical Metallurgy of High-Speed Steels, Proc. Conf. on Materials for Metal Cutting, Apr. 14–16, 1970, iron and steel inst.

  3. Mohanty O.N. (1995) On the Stabilization of Retained Austenite: Mechanism and Kinetics. Mater. Sci. Eng. B: Solid State Adv. Technol B32(3):267-269

    Article  CAS  Google Scholar 

  4. Cambronero L.E.G., Gordo E., Torralba J.M., Ruiz-Prieto J.M. (1996) Comparative Study of High Speed Steels Obtained Through Explosive Compaction and Hot Isostatic Pressing. Mater. Sci. Eng. A A207(1):36–45

    Article  CAS  Google Scholar 

  5. kremnev L.S. (1991) Theory of Alloying of High Speed Steels. Met. Sci. Heat Treat 33(5–6):428-434

    Article  Google Scholar 

  6. Wilson R. (1975) Metallurgy and Heat Treatment of Tool Steels, McGraw-Hill Book Co. Ltd, New York, pp 163–194

    Google Scholar 

  7. George A. Roberts and Robert A. Cary, High Speed Steels, Tool Steels, 4th ed., American Society for Metals, Inc., 1980, p 627–761

  8. Hoyle G. (1988) High Speed Steels, 1 Butterworth Press, Boston

    Google Scholar 

  9. Honeycombe R.W.K., Bhadeshia H.K.D.H. (1995) Steels: Microstructure and Properties, 2 Edward Arnold, London, p 171

    Google Scholar 

  10. R. Wang, H.O. Andren, H. Wisell, and G.L. Dunlop, Role of Alloy Composition in the Precipitation Behavior of High Speed Steels, Acta Metall. Mater.,40(7), Jul., 1992, p 1727–1738

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan, ROC

    T.H. Yu, C.Y. Chen & J.R. Yang

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  1. T.H. Yu
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  2. C.Y. Chen
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  3. J.R. Yang
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Correspondence to T.H. Yu.

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Yu, T., Chen, C. & Yang, J. Decomposition of Retained Austenite in a High-Speed Steel GPM A30. J of Materi Eng and Perform 16, 102–108 (2007). https://doi.org/10.1007/s11665-006-9016-9

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  • DOI: https://doi.org/10.1007/s11665-006-9016-9

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