☆ 4.7 Article

Effect of microstructural refinement on the toughness of low carbon martensitic steel

SCRIPTA MATERIALIA (2008)

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Journal

SCRIPTA MATERIALIA
Volume 58, Issue 6, Pages 492-495

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2007.10.053

Keywords

martensitic steels; toughness; cleavage; ductile-brittle transition temperature

Categories

Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

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The ductile to brittle transition temperature of a commercial martensitic steel decreases with the refinement of its microstructure. Electron backscattered diffraction analysis of the cleavage crack path shows that the packet boundaries can strongly hinder fracture propagation, and thus martensitic packets can act as the effective microstructure unit for cleavage. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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