Superplastic deformation of 15 vol% SiCp/LY12 aluminum composite under an electric field

M. Q. Li; C. Tang; D. Chen; Y. Chen

doi:10.1007/s11665-997-0062-8

Superplastic deformation of 15 vol% SiC_p/LY12 aluminum composite under an electric field

M. Q. Li, C. Tang, D. Chen, Y. Chen

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

Abstract

In this paper, influence of an external electric field on mechanical performance of deformation, cavity formation and fracture mechanisms has been investigated during superplastic deformation of 15 vol% SiC_p/LY12 (LY12 matrix corresponds approximately to ASTM 2024) aluminum composite. The experimental results show that the appropriate electric field makes the strain-rate sensitivity index increase and the superplasticity improve. The results obtained by scanning electron microscopy (SEM) show that the nucleation growth and linkage or coalescence of cavities is restrained by applying an external electric field; meanwhile, fracture transforms from intergranular tear to typical superplastic failure, that is, fracture by formation and coalescence of cavities at particles and boundaries.

Original language	English
Pages (from-to)	667-670
Number of pages	4
Journal	Journal of Materials Engineering and Performance
Volume	6
Issue number	5
DOIs	https://doi.org/10.1007/s11665-997-0062-8
State	Published - Oct 1997

Keywords

Aluminum
Superplastic composite

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10.1007/s11665-997-0062-8

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title = "Superplastic deformation of 15 vol% SiCp/LY12 aluminum composite under an electric field",

abstract = "In this paper, influence of an external electric field on mechanical performance of deformation, cavity formation and fracture mechanisms has been investigated during superplastic deformation of 15 vol% SiCp/LY12 (LY12 matrix corresponds approximately to ASTM 2024) aluminum composite. The experimental results show that the appropriate electric field makes the strain-rate sensitivity index increase and the superplasticity improve. The results obtained by scanning electron microscopy (SEM) show that the nucleation growth and linkage or coalescence of cavities is restrained by applying an external electric field; meanwhile, fracture transforms from intergranular tear to typical superplastic failure, that is, fracture by formation and coalescence of cavities at particles and boundaries.",

keywords = "Aluminum, Superplastic composite",

author = "Li, {M. Q.} and C. Tang and D. Chen and Y. Chen",

year = "1997",

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T1 - Superplastic deformation of 15 vol% SiCp/LY12 aluminum composite under an electric field

AU - Li, M. Q.

AU - Tang, C.

AU - Chen, D.

AU - Chen, Y.

PY - 1997/10

Y1 - 1997/10

N2 - In this paper, influence of an external electric field on mechanical performance of deformation, cavity formation and fracture mechanisms has been investigated during superplastic deformation of 15 vol% SiCp/LY12 (LY12 matrix corresponds approximately to ASTM 2024) aluminum composite. The experimental results show that the appropriate electric field makes the strain-rate sensitivity index increase and the superplasticity improve. The results obtained by scanning electron microscopy (SEM) show that the nucleation growth and linkage or coalescence of cavities is restrained by applying an external electric field; meanwhile, fracture transforms from intergranular tear to typical superplastic failure, that is, fracture by formation and coalescence of cavities at particles and boundaries.

AB - In this paper, influence of an external electric field on mechanical performance of deformation, cavity formation and fracture mechanisms has been investigated during superplastic deformation of 15 vol% SiCp/LY12 (LY12 matrix corresponds approximately to ASTM 2024) aluminum composite. The experimental results show that the appropriate electric field makes the strain-rate sensitivity index increase and the superplasticity improve. The results obtained by scanning electron microscopy (SEM) show that the nucleation growth and linkage or coalescence of cavities is restrained by applying an external electric field; meanwhile, fracture transforms from intergranular tear to typical superplastic failure, that is, fracture by formation and coalescence of cavities at particles and boundaries.

KW - Aluminum

KW - Superplastic composite

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DO - 10.1007/s11665-997-0062-8

M3 - 文章

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SN - 1059-9495

VL - 6

SP - 667

EP - 670

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 5

ER -

Superplastic deformation of 15 vol% SiC_p/LY12 aluminum composite under an electric field

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Keywords

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