Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions

H. J. Kong; T. Yang; R. Chen; S. Q. Yue; T. L. Zhang; B. X. Cao; C. Wang; W. H. Liu; J. H. Luan; Z. B. Jiao; B. W. Zhou; L. G. Meng; A. Wang; C. T. Liu

doi:10.1016/j.scriptamat.2020.05.008

Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions

H. J. Kong
, T. Yang
, R. Chen
, S. Q. Yue
, T. L. Zhang
, B. X. Cao
, C. Wang
, W. H. Liu
, J. H. Luan
, Z. B. Jiao
, B. W. Zhou
, L. G. Meng
, A. Wang
, C. T. Liu

Research output: Journal article publication › Journal article › Academic research › peer-review

34 Citations (Scopus)

Abstract

The strength-ductility paradox is a long-sought challenge for all engineering materials. In this study, we escaped the strength-ductility trade-off by engineering nano-scale heterogeneities carefully in the advanced nanostructured Fe-based alloys through alloying with Cu and Mn additions. We demonstrated a triple ductility enhancement by 20% together with a strength improvement of 100MPa compared to the alloys with sole Cu additions, overturning a common understanding of the strength-ductility trade-off. The strength-ductility enhancement is attributed to the complex interplay between the transformation induced plasticity (TRIP) and the coherent nano-scale Cu precipitates as well as the resultant heterogeneous stress–strain partitioning and dislocation interactions.

Original language	English
Pages (from-to)	213-218
Number of pages	6
Journal	Scripta Materialia
Volume	186
DOIs	https://doi.org/10.1016/j.scriptamat.2020.05.008
Publication status	Published - Sept 2020

Keywords

Advanced nanostructured Fe-based alloys
Grain boundary precipitation
Nano-scale Cu precipitation
Strength-ductility paradox
Transformation induced plasticity (TRIP)

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

More information

10.1016/j.scriptamat.2020.05.008

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Kong, H. J., Yang, T., Chen, R., Yue, S. Q., Zhang, T. L., Cao, B. X., Wang, C., Liu, W. H., Luan, J. H., Jiao, Z. B., Zhou, B. W., Meng, L. G., Wang, A., & Liu, C. T. (2020). Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions. Scripta Materialia, 186, 213-218. https://doi.org/10.1016/j.scriptamat.2020.05.008

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abstract = "The strength-ductility paradox is a long-sought challenge for all engineering materials. In this study, we escaped the strength-ductility trade-off by engineering nano-scale heterogeneities carefully in the advanced nanostructured Fe-based alloys through alloying with Cu and Mn additions. We demonstrated a triple ductility enhancement by 20\% together with a strength improvement of 100MPa compared to the alloys with sole Cu additions, overturning a common understanding of the strength-ductility trade-off. The strength-ductility enhancement is attributed to the complex interplay between the transformation induced plasticity (TRIP) and the coherent nano-scale Cu precipitates as well as the resultant heterogeneous stress{\textendash}strain partitioning and dislocation interactions.",

keywords = "Advanced nanostructured Fe-based alloys, Grain boundary precipitation, Nano-scale Cu precipitation, Strength-ductility paradox, Transformation induced plasticity (TRIP)",

author = "Kong, \{H. J.\} and T. Yang and R. Chen and Yue, \{S. Q.\} and Zhang, \{T. L.\} and Cao, \{B. X.\} and C. Wang and Liu, \{W. H.\} and Luan, \{J. H.\} and Jiao, \{Z. B.\} and Zhou, \{B. W.\} and Meng, \{L. G.\} and A. Wang and Liu, \{C. T.\}",

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month = sep,

doi = "10.1016/j.scriptamat.2020.05.008",

language = "English",

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AU - Kong, H. J.

AU - Yang, T.

AU - Chen, R.

AU - Yue, S. Q.

AU - Zhang, T. L.

AU - Cao, B. X.

AU - Wang, C.

AU - Liu, W. H.

AU - Luan, J. H.

AU - Jiao, Z. B.

AU - Zhou, B. W.

AU - Meng, L. G.

AU - Wang, A.

AU - Liu, C. T.

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AB - The strength-ductility paradox is a long-sought challenge for all engineering materials. In this study, we escaped the strength-ductility trade-off by engineering nano-scale heterogeneities carefully in the advanced nanostructured Fe-based alloys through alloying with Cu and Mn additions. We demonstrated a triple ductility enhancement by 20% together with a strength improvement of 100MPa compared to the alloys with sole Cu additions, overturning a common understanding of the strength-ductility trade-off. The strength-ductility enhancement is attributed to the complex interplay between the transformation induced plasticity (TRIP) and the coherent nano-scale Cu precipitates as well as the resultant heterogeneous stress–strain partitioning and dislocation interactions.

KW - Advanced nanostructured Fe-based alloys

KW - Grain boundary precipitation

KW - Nano-scale Cu precipitation

KW - Strength-ductility paradox

KW - Transformation induced plasticity (TRIP)

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DO - 10.1016/j.scriptamat.2020.05.008

M3 - Journal article

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SN - 1359-6462

VL - 186

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EP - 218

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions

Abstract

Keywords

ASJC Scopus subject areas

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