Faster Growing Grains

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Science  01 Nov 2002:
Vol. 298, Issue 5595, pp. 919c
DOI: 10.1126/science.298.5595.919c

When carbon steel is cooled from the melt, it forms a polycrystalline structure that undergoes several solid-state transformations. Using newly developed x-ray techniques and a synchrotron source, Offerman et al. (p. 1003; see the Perspective by Militzer) studied the transformations as they occur in individual crystal grains and found that current models do not capture the full physics of grain growth. Grain nucleation occurs much faster than previously thought. These observations may lead to enhanced methods for carbon steel forming.

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