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Effect of extrinsic grain-boundary dislocations on M23C6 precipitate nucleation in an austenitic stainless steel

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Abstract

From a comparison of the isothermal precipitation curve for M23C6 grain-boundary precipitates in an austenitic stainless steel and of the spreading times of extrinsic grain-boundary dislocations (EGBDs), it has been shown that M23C6 precipitates cannot directly nucleate on EGBD lines lying on random high-angle grain boundaries. This process can occur only on coherent and incoherent twin and other special boundaries.

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  1. R. A. Varin

    Present address: Metallurgical Sciences Laboratory, Department of Mechanical Engineering, University of Manitoba, R3T 2N2, Winnipeg, Manitoba, Canada

Authors and Affiliations

  1. Institute of Materials Science and Engineering, Warsaw Technical University, 02-524, Warsaw, Narbutta 85, Poland

    R. A. Varin

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Varin, R.A. Effect of extrinsic grain-boundary dislocations on M23C6 precipitate nucleation in an austenitic stainless steel. J Mater Sci 14, 811–816 (1979). https://doi.org/10.1007/BF00550711

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  • DOI: https://doi.org/10.1007/BF00550711

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