Bone-like crack resistance in hierarchical metastable nanolaminate steels

Author:

Koyama Motomichi1ORCID,Zhang Zhao1,Wang Meimei23ORCID,Ponge Dirk2,Raabe Dierk2,Tsuzaki Kaneaki1,Noguchi Hiroshi1,Tasan Cemal Cem3ORCID

Affiliation:

1. Kyushu University, Motooka 744, 819-0395 Fukuoka, Japan.

2. Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.

3. Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.

Abstract

Bone-inspired steel Load cycling of metal components leads to fatigue and ultimately failure through the propagation of cracks. Koyama et al. took inspiration from bone to develop a steel with a laminated substructure that arrests cracks. The resulting hierarchical material has much better fatigue resistance properties than other iron alloys. The strategy need not be limited to steel; other metal alloys should also benefit from this type of microstructural engineering. Science , this issue p. 1055

Funder

Japan Society for the Promotion of Science

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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