An Ideal Ultrafine-Grained Structure for High Strength and High Ductility

C. X. Huang; W. P. Hu; Q. Y. Wang; C. Wang; G. Yang; Y. T. Zhu

doi:10.1080/21663831.2014.968680

An Ideal Ultrafine-Grained Structure for High Strength and High Ductility

C. X. Huang^*, W. P. Hu, Q. Y. Wang^*, C. Wang, G. Yang, Y. T. Zhu

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

116 Citations (Scopus)

29 Downloads (CityUHK Scholars)

Abstract

An ideal ultrafine-grained (UFG) microstructure for high strength and high ductility should have short dislocation-slip path to impede dislocation slip and very low dislocation density to ensure more room for dislocation accumulation. Such a microstructure is hard to produce, especially for UFG metals produced by severe plastic deformation techniques. Here, we report an ideal UFG structure produced by reverse transformation of deformation-induced martensite in 304 L austenitic stainless steel. It produced small grains and a high density of nanotwins for both high strength and high ductility. This approach is applicable to face-centered cubic metals with low stacking fault energy.

Original language	English
Pages (from-to)	88-94
Journal	Materials Research Letters
Volume	3
Issue number	2
Online published	9 Oct 2014
DOIs	https://doi.org/10.1080/21663831.2014.968680
Publication status	Published - 2015
Externally published	Yes

Research Keywords

Dislocations
Stacking faults
Strength and ductility
Twins
Ultrafine grains

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This full text is made available under CC-BY 3.0. https://creativecommons.org/licenses/by/3.0/

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abstract = "An ideal ultrafine-grained (UFG) microstructure for high strength and high ductility should have short dislocation-slip path to impede dislocation slip and very low dislocation density to ensure more room for dislocation accumulation. Such a microstructure is hard to produce, especially for UFG metals produced by severe plastic deformation techniques. Here, we report an ideal UFG structure produced by reverse transformation of deformation-induced martensite in 304 L austenitic stainless steel. It produced small grains and a high density of nanotwins for both high strength and high ductility. This approach is applicable to face-centered cubic metals with low stacking fault energy.",

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author = "Huang, {C. X.} and Hu, {W. P.} and Wang, {Q. Y.} and C. Wang and G. Yang and Zhu, {Y. T.}",

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AU - Huang, C. X.

AU - Hu, W. P.

AU - Wang, Q. Y.

AU - Wang, C.

AU - Yang, G.

AU - Zhu, Y. T.

PY - 2015

Y1 - 2015

N2 - An ideal ultrafine-grained (UFG) microstructure for high strength and high ductility should have short dislocation-slip path to impede dislocation slip and very low dislocation density to ensure more room for dislocation accumulation. Such a microstructure is hard to produce, especially for UFG metals produced by severe plastic deformation techniques. Here, we report an ideal UFG structure produced by reverse transformation of deformation-induced martensite in 304 L austenitic stainless steel. It produced small grains and a high density of nanotwins for both high strength and high ductility. This approach is applicable to face-centered cubic metals with low stacking fault energy.

AB - An ideal ultrafine-grained (UFG) microstructure for high strength and high ductility should have short dislocation-slip path to impede dislocation slip and very low dislocation density to ensure more room for dislocation accumulation. Such a microstructure is hard to produce, especially for UFG metals produced by severe plastic deformation techniques. Here, we report an ideal UFG structure produced by reverse transformation of deformation-induced martensite in 304 L austenitic stainless steel. It produced small grains and a high density of nanotwins for both high strength and high ductility. This approach is applicable to face-centered cubic metals with low stacking fault energy.

KW - Dislocations

KW - Stacking faults

KW - Strength and ductility

KW - Twins

KW - Ultrafine grains

KW - Dislocations

KW - Stacking faults

KW - Strength and ductility

KW - Twins

KW - Ultrafine grains

KW - Dislocations

KW - Stacking faults

KW - Strength and ductility

KW - Twins

KW - Ultrafine grains

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DO - 10.1080/21663831.2014.968680

M3 - RGC 21 - Publication in refereed journal

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EP - 94

JO - Materials Research Letters

JF - Materials Research Letters

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An Ideal Ultrafine-Grained Structure for High Strength and High Ductility

Abstract

Research Keywords

Publisher's Copyright Statement

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