Model of Enhanced Strength and Ductility of Metal/Graphene Composites with Bimodal Grain Size Distribution

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Model of Enhanced Strength and Ductility of Metal/Graphene Composites with Bimodal Grain Size Distribution. / Sheinerman, A. G.; Gutkin, M. Yu.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 51, No. 1, 01.01.2020, p. 189-199.

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

Author

Sheinerman, A. G. ; Gutkin, M. Yu. / Model of Enhanced Strength and Ductility of Metal/Graphene Composites with Bimodal Grain Size Distribution. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2020 ; Vol. 51, No. 1. pp. 189-199.

BibTeX

@article{12a5123b3a4e4403987a1972da75a4bf,

title = "Model of Enhanced Strength and Ductility of Metal/Graphene Composites with Bimodal Grain Size Distribution",

abstract = "A model is proposed that describes plastic deformation in metal/graphene composites with a bimodal grain size distribution of the metallic matrix. Within the model, dislocation pile-ups are generated in large grains at Frank-Read sources, and their stresses promote dislocation motion within the nanocrystalline/ultrafine-grained phase. Also, the presence of graphene gives rise to the mechanisms of strengthening, such as the load transfer to graphene platelets, thermal-mismatch-induced strengthening and Orowan strengthening, as well as to back stress hardening. We demonstrated that the strengthening and strain hardening in bimodal metal/graphene composites are dominated by the Orowan strengthening and back stress hardening. The results also indicate that regardless of the lateral size of graphene platelets, bimodal metal/graphene composites can simultaneously have high yield strength and large uniform deformation but the values of the yield strength and critical uniform deformation are higher in the case of small graphene platelets.",

keywords = "HIGH-TENSILE DUCTILITY, MECHANICAL-PROPERTIES, STAINLESS-STEEL, NANOSTRUCTURED METALS, PLASTIC-DEFORMATION, FRACTURE-BEHAVIOR, MATRIX COMPOSITES, STRAIN-RATE, GRAPHENE, NANOCRYSTALLINE",

author = "Sheinerman, {A. G.} and Gutkin, {M. Yu}",

year = "2020",

month = jan,

day = "1",

doi = "10.1007/s11661-019-05500-w",

language = "Английский",

volume = "51",

pages = "189--199",

journal = "Metallurgical and Materials Transactions B",

issn = "0360-2141",

publisher = "ASM International",

number = "1",

}

RIS

TY - JOUR

T1 - Model of Enhanced Strength and Ductility of Metal/Graphene Composites with Bimodal Grain Size Distribution

AU - Sheinerman, A. G.

AU - Gutkin, M. Yu

PY - 2020/1/1

Y1 - 2020/1/1

N2 - A model is proposed that describes plastic deformation in metal/graphene composites with a bimodal grain size distribution of the metallic matrix. Within the model, dislocation pile-ups are generated in large grains at Frank-Read sources, and their stresses promote dislocation motion within the nanocrystalline/ultrafine-grained phase. Also, the presence of graphene gives rise to the mechanisms of strengthening, such as the load transfer to graphene platelets, thermal-mismatch-induced strengthening and Orowan strengthening, as well as to back stress hardening. We demonstrated that the strengthening and strain hardening in bimodal metal/graphene composites are dominated by the Orowan strengthening and back stress hardening. The results also indicate that regardless of the lateral size of graphene platelets, bimodal metal/graphene composites can simultaneously have high yield strength and large uniform deformation but the values of the yield strength and critical uniform deformation are higher in the case of small graphene platelets.

AB - A model is proposed that describes plastic deformation in metal/graphene composites with a bimodal grain size distribution of the metallic matrix. Within the model, dislocation pile-ups are generated in large grains at Frank-Read sources, and their stresses promote dislocation motion within the nanocrystalline/ultrafine-grained phase. Also, the presence of graphene gives rise to the mechanisms of strengthening, such as the load transfer to graphene platelets, thermal-mismatch-induced strengthening and Orowan strengthening, as well as to back stress hardening. We demonstrated that the strengthening and strain hardening in bimodal metal/graphene composites are dominated by the Orowan strengthening and back stress hardening. The results also indicate that regardless of the lateral size of graphene platelets, bimodal metal/graphene composites can simultaneously have high yield strength and large uniform deformation but the values of the yield strength and critical uniform deformation are higher in the case of small graphene platelets.

KW - HIGH-TENSILE DUCTILITY

KW - MECHANICAL-PROPERTIES

KW - STAINLESS-STEEL

KW - NANOSTRUCTURED METALS

KW - PLASTIC-DEFORMATION

KW - FRACTURE-BEHAVIOR

KW - MATRIX COMPOSITES

KW - STRAIN-RATE

KW - GRAPHENE

KW - NANOCRYSTALLINE

UR - http://www.scopus.com/inward/record.url?scp=85074038612&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/model-enhanced-strength-ductility-metalgraphene-composites-bimodal-grain-size-distribution

UR - https://www.mendeley.com/catalogue/ba4370ba-4625-397d-a5e3-18439e0cee33/

U2 - 10.1007/s11661-019-05500-w

DO - 10.1007/s11661-019-05500-w

M3 - статья

AN - SCOPUS:85074038612

VL - 51

SP - 189

EP - 199

JO - Metallurgical and Materials Transactions B

JF - Metallurgical and Materials Transactions B

SN - 0360-2141

IS - 1

ER -

ID: 48912151