| 11. | Without bentonite the pearlite separates and floats to the upper part of the slurry.
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| 12. | This forms a layered microstructure called pearlite.
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| 13. | White cast-iron is composed mostly of a microstructure called ledeburite mixed with pearlite.
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| 14. | There are also quarries of pearlite.
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| 15. | Two locations were uncovered that had large deposits in sacks believed to be filled with pearlite.
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| 16. | The thickly coated back cools more slowly retaining the pearlite steel characteristics of relative softness and flexibility.
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| 17. | However, greater undercooling by rapid quenching results in formation of martensite or bainite instead of pearlite.
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| 18. | Since ferrite is softer than pearlite, the two microstructures combine to increase the ductility of the alloy.
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| 19. | Since cementite is much harder than pearlite, the alloy has greater hardenability at a cost in the ductility.
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| 20. | Unlike pearlite, whose formation involves the diffusion of all atoms, bainite grows by a displacive transformation mechanism.
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