| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1500401 | Scripta Materialia | 2011 | 4 Pages |
Abstract
A 1800 MPa class steel with ultrafine elongated grain structures was fabricated by multi-pass caliber rolling and a static three-point bending test was conducted. The strength–toughness balance of the developed steel was remarkably improved compared with conventionally quenched and tempered steel with a martensitic structure. The static fracture toughness of the developed steel was about 40 times higher than that of the conventional steel. The microstructural design that improves the toughness in ultrahigh-strength steels is clarified.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Tadanobu Inoue, Yuuji Kimura, Shojiro Ochiai,