Abstract
In a transmission electron microscope study, it is shown that the first bainitic plates to form during the isothermal decomposition of metastable β brass do so in the vicinity of spherical, nonmetallic inclusions 0.1 to 0.7 μm in diameter. These are believed to be particles of zinc oxide, the differential contraction of which during quenching produces a shear strain field that assists nucleation. Secondary nucleation occurs by branching from the primary plates to give a complex network on all variants of the ∼l55β habit.
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Garwood, R.D. The heterogeneous nucleation of bainitic plates in metastable β brass. Metall Trans 4, 1375–1378 (1973). https://doi.org/10.1007/BF02644535
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DOI: https://doi.org/10.1007/BF02644535