High ductility of ultrafine-grained steel via phase transformation

S. Cheng; H. Choo; Y. H. Zhao; X. L. Wang; Y. T. Zhu; Y. D. Wang; J. Almer; P. K. Liaw; J. E. Jin; Y. K. Lee

doi:10.1557/jmr.2008.0213

High ductility of ultrafine-grained steel via phase transformation

S. Cheng, H. Choo, Y. H. Zhao, X. L. Wang, Y. T. Zhu, Y. D. Wang, J. Almer, P. K. Liaw, J. E. Jin, Y. K. Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

There is often a tradeoff between strength and ductility, and the low ductility of ultrafine-grained (UFG) materials has been a major obstacle to their practical structural applications despite their high strength. In this study, we have achieved a ∼40% tensile ductility while increasing the yield strength of FeCrNiMn steel by an order of magnitude via grain refinement and deformation-induced martensitic phase transformation. The strain-rate effect on the inhomogeneous deformation behavior and phase transformation was studied in detail.

Original language	English
Pages (from-to)	1578-1586
Number of pages	9
Journal	Journal of Materials Research
Volume	23
Issue number	6
DOIs	https://doi.org/10.1557/jmr.2008.0213
Publication status	Published - 2008 Jun

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/jmr.2008.0213

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author = "S. Cheng and H. Choo and Zhao, {Y. H.} and Wang, {X. L.} and Zhu, {Y. T.} and Wang, {Y. D.} and J. Almer and Liaw, {P. K.} and Jin, {J. E.} and Lee, {Y. K.}",

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AU - Cheng, S.

AU - Choo, H.

AU - Zhao, Y. H.

AU - Wang, X. L.

AU - Zhu, Y. T.

AU - Wang, Y. D.

AU - Almer, J.

AU - Liaw, P. K.

AU - Jin, J. E.

AU - Lee, Y. K.

PY - 2008/6

Y1 - 2008/6

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AB - There is often a tradeoff between strength and ductility, and the low ductility of ultrafine-grained (UFG) materials has been a major obstacle to their practical structural applications despite their high strength. In this study, we have achieved a ∼40% tensile ductility while increasing the yield strength of FeCrNiMn steel by an order of magnitude via grain refinement and deformation-induced martensitic phase transformation. The strain-rate effect on the inhomogeneous deformation behavior and phase transformation was studied in detail.

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EP - 1586

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 6

ER -

High ductility of ultrafine-grained steel via phase transformation

Abstract

All Science Journal Classification (ASJC) codes

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