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

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 - Sep 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

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

More information

10.1016/j.scriptamat.2020.05.008

Link to publication in Scopus

Cite this

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–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.}",

year = "2020",

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

language = "English",

volume = "186",

pages = "213--218",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Ltd",

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

In: Scripta Materialia, Vol. 186, 09.2020, p. 213-218.

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

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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.

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