Modelling strength and ductility of ultrafine grained BCC and FCC alloys using irreversible thermodynamics

School of Engineering

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https://doi.org/10.1179/174328408X353750
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Keywords

Ductility, Strength, Thermodynamics, Ultrafine grained alloys, Work hardening modelling

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Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Modelling strength and ductility of ultrafine grained BCC and FCC alloys using irreversible thermodynamics. / Huang, M.; Rivera-Díaz-del-Castillo, P. E J; Bouaziz, O. et al.
In: Materials Science and Technology, Vol. 25, No. 7, 07.2009, p. 833-839.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{cfb21d40b3c24d90baa04d5b6e603a60,

title = "Modelling strength and ductility of ultrafine grained BCC and FCC alloys using irreversible thermodynamics",

abstract = "A novel grain size dependent strain hardening model is derived from the theory of irreversible thermodynamics. The model yields the evolution of the dislocation densities in the grain interior and at the grain boundary, as well as their contributions to the flow stress. It is found that submicron grain sizes have a lower dislocation density in the grain interior, causing ductility to decrease greatly. The predicted stress-strain curve shapes, uniform elongation and ultimate tensile strength values for interstitial free steels (body centred cubic) and aluminium alloys (AA1100, face centred cubic) show good agreement with experimental observations.",

keywords = "Ductility, Strength, Thermodynamics, Ultrafine grained alloys, Work hardening modelling",

author = "M. Huang and Rivera-D{\'i}az-del-Castillo, {P. E J} and O. Bouaziz and {Van Der Zwaag}, S.",

year = "2009",

month = jul,

doi = "10.1179/174328408X353750",

language = "English",

volume = "25",

pages = "833--839",

journal = "Materials Science and Technology",

issn = "0267-0836",

publisher = "Taylor and Francis Ltd.",

number = "7",

}

RIS

TY - JOUR

T1 - Modelling strength and ductility of ultrafine grained BCC and FCC alloys using irreversible thermodynamics

AU - Huang, M.

AU - Rivera-Díaz-del-Castillo, P. E J

AU - Bouaziz, O.

AU - Van Der Zwaag, S.

PY - 2009/7

Y1 - 2009/7

N2 - A novel grain size dependent strain hardening model is derived from the theory of irreversible thermodynamics. The model yields the evolution of the dislocation densities in the grain interior and at the grain boundary, as well as their contributions to the flow stress. It is found that submicron grain sizes have a lower dislocation density in the grain interior, causing ductility to decrease greatly. The predicted stress-strain curve shapes, uniform elongation and ultimate tensile strength values for interstitial free steels (body centred cubic) and aluminium alloys (AA1100, face centred cubic) show good agreement with experimental observations.

AB - A novel grain size dependent strain hardening model is derived from the theory of irreversible thermodynamics. The model yields the evolution of the dislocation densities in the grain interior and at the grain boundary, as well as their contributions to the flow stress. It is found that submicron grain sizes have a lower dislocation density in the grain interior, causing ductility to decrease greatly. The predicted stress-strain curve shapes, uniform elongation and ultimate tensile strength values for interstitial free steels (body centred cubic) and aluminium alloys (AA1100, face centred cubic) show good agreement with experimental observations.

KW - Ductility

KW - Strength

KW - Thermodynamics

KW - Ultrafine grained alloys

KW - Work hardening modelling

U2 - 10.1179/174328408X353750

DO - 10.1179/174328408X353750

M3 - Journal article

AN - SCOPUS:68349104338

VL - 25

SP - 833

EP - 839

JO - Materials Science and Technology

JF - Materials Science and Technology

SN - 0267-0836

IS - 7

ER -

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