Brittle intermetallic compound makes ultrastrong low-density steel with large ductility

Sang-Heon Kim, Hansoo Kim () and Nack J. Kim
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Sang-Heon Kim: Graduate Institute of Ferrous Technology, POSTECH, Pohang 790-784, South Korea
Hansoo Kim: Graduate Institute of Ferrous Technology, POSTECH, Pohang 790-784, South Korea
Nack J. Kim: Graduate Institute of Ferrous Technology, POSTECH, Pohang 790-784, South Korea

Nature, 2015, vol. 518, issue 7537, 77-79

Abstract: Alloying steel with aluminium improves the material’s strength-to-weight ratio, but the resulting formation of brittle intermetallic compounds within the steel matrix reduces its ductility; here the morphology and distribution of the intermetallic precipitates are controlled to alleviate this problem.

Date: 2015
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DOI: 10.1038/nature14144

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