2023
DOI: 10.1080/02670836.2022.2142746
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Carbide evolution for a quenched and tempered Dievar steel

Abstract: Carbide precipitation, coarsening and hardness variations have been investigated for a quenched and tempered Dievar steel by SEM, TEM, STEM, HRTEM, XRD and Rockwell hardness testing. The carbide precipitation sequence has been ascertained as: M8C7 + bainitic/auto-tempered carbides → M8C7 + M2C + M7C3 → M8C7+ M7C3 +M23C6 → M8C7 + M7C3 + M23C6 + M6C. Boundary carbides coarsen obviously faster than matrix ones. Hardness variations originating from the carbide evolution have been qualified. A fine-dispersion of M2… Show more

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