Toughening of a 1500MPa class steel through formation of an ultrafine fibrous grain structure

descriptionPublicationkeyboard_double_arrow_right Article 01 Sep 2007 English Publisher:Elsevier BVJournal:Scripta Materialia, volume 57, pages 465-468 (issn: 1359-6462,

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Authors: Y. Kimura; T. Inoue; F. Yin; O. Sitdikov; K. Tsuzaki;

doi: 10.1016/j.scriptamat.2007.05.039

Toughening of a 1500MPa class steel through formation of an ultrafine fibrous grain structure

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Abstract

A deformation of tempered martensite, namely tempforming at an elevated temperature, was applied to a medium-carbon low-alloy steel. This thermomechanical treatment led to an evolution of an ultrafine fibrous grain structure with a strong 〈1 1 0〉∥RD fiber deformation texture and to a remarkable improvement in Charpy impact strength (uE = 165 J) at a tensile strength of 1.5 GPa.

Related Organizations

Nagoya Institute of Technology
Japan
National Institute for Materials Science
Japan

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