Tensile deformation behavior of a sub-micrometer Al2O3/6061Al composite

Qiang Zhang; Gaohui Wu; Longtao Jiang

doi:10.1016/j.msea.2006.09.143

Tensile deformation behavior of a sub-micrometer Al₂O₃/6061Al composite

Qiang Zhang^*
, Gaohui Wu
, Longtao Jiang

^*Corresponding author for this work

Harbin Institute of Technology

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

21 Scopus citations

Abstract

A 0.3 μm Al₂O₃/6061Al composite with 33% volume fraction of Al₂O₃ was fabricated by the patented squeeze-casting technology. The tensile properties were studied, and the dynamic tensile deformation behavior was investigated by an in situ TEM tensile technique. The as-cast composite exhibits excellent tensile properties with a fracture strength of 504 MPa, and the strength increases to 579 MPa after a T6 treatment. The high strength is mainly attributed to the dispersion strengthening effect of the finer sub-micrometer Al₂O₃ particles. Dynamic transmission electron microscopy indicates that micro-cracks initiate and propagate mainly in the matrix. The Al₂O₃ particles can hinder the growth and deflect the cracks, but the resistance of the particles to crack propagation is small. The propagation stage is accordingly short, leading to the fracture of the composite.

Original language	English
Pages (from-to)	281-284
Number of pages	4
Journal	Materials Science and Engineering: A
Volume	483-484
Issue number	1-2 C
DOIs	https://doi.org/10.1016/j.msea.2006.09.143
State	Published - 15 Jun 2008
Externally published	Yes

Keywords

AlO particles
Aluminum-matrix composite
Crack
Deformation
Tensile property

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10.1016/j.msea.2006.09.143

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title = "Tensile deformation behavior of a sub-micrometer Al2O3/6061Al composite",

abstract = "A 0.3 μm Al2O3/6061Al composite with 33\% volume fraction of Al2O3 was fabricated by the patented squeeze-casting technology. The tensile properties were studied, and the dynamic tensile deformation behavior was investigated by an in situ TEM tensile technique. The as-cast composite exhibits excellent tensile properties with a fracture strength of 504 MPa, and the strength increases to 579 MPa after a T6 treatment. The high strength is mainly attributed to the dispersion strengthening effect of the finer sub-micrometer Al2O3 particles. Dynamic transmission electron microscopy indicates that micro-cracks initiate and propagate mainly in the matrix. The Al2O3 particles can hinder the growth and deflect the cracks, but the resistance of the particles to crack propagation is small. The propagation stage is accordingly short, leading to the fracture of the composite.",

keywords = "AlO particles, Aluminum-matrix composite, Crack, Deformation, Tensile property",

author = "Qiang Zhang and Gaohui Wu and Longtao Jiang",

year = "2008",

month = jun,

day = "15",

doi = "10.1016/j.msea.2006.09.143",

language = "英语",

volume = "483-484",

pages = "281--284",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

number = "1-2 C",

}

TY - JOUR

T1 - Tensile deformation behavior of a sub-micrometer Al2O3/6061Al composite

AU - Zhang, Qiang

AU - Wu, Gaohui

AU - Jiang, Longtao

PY - 2008/6/15

Y1 - 2008/6/15

N2 - A 0.3 μm Al2O3/6061Al composite with 33% volume fraction of Al2O3 was fabricated by the patented squeeze-casting technology. The tensile properties were studied, and the dynamic tensile deformation behavior was investigated by an in situ TEM tensile technique. The as-cast composite exhibits excellent tensile properties with a fracture strength of 504 MPa, and the strength increases to 579 MPa after a T6 treatment. The high strength is mainly attributed to the dispersion strengthening effect of the finer sub-micrometer Al2O3 particles. Dynamic transmission electron microscopy indicates that micro-cracks initiate and propagate mainly in the matrix. The Al2O3 particles can hinder the growth and deflect the cracks, but the resistance of the particles to crack propagation is small. The propagation stage is accordingly short, leading to the fracture of the composite.

AB - A 0.3 μm Al2O3/6061Al composite with 33% volume fraction of Al2O3 was fabricated by the patented squeeze-casting technology. The tensile properties were studied, and the dynamic tensile deformation behavior was investigated by an in situ TEM tensile technique. The as-cast composite exhibits excellent tensile properties with a fracture strength of 504 MPa, and the strength increases to 579 MPa after a T6 treatment. The high strength is mainly attributed to the dispersion strengthening effect of the finer sub-micrometer Al2O3 particles. Dynamic transmission electron microscopy indicates that micro-cracks initiate and propagate mainly in the matrix. The Al2O3 particles can hinder the growth and deflect the cracks, but the resistance of the particles to crack propagation is small. The propagation stage is accordingly short, leading to the fracture of the composite.

KW - AlO particles

KW - Aluminum-matrix composite

KW - Crack

KW - Deformation

KW - Tensile property

UR - https://www.scopus.com/pages/publications/41849128904

U2 - 10.1016/j.msea.2006.09.143

DO - 10.1016/j.msea.2006.09.143

M3 - 文章

AN - SCOPUS:41849128904

SN - 0921-5093

VL - 483-484

SP - 281

EP - 284

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2 C

ER -

Tensile deformation behavior of a sub-micrometer Al₂O₃/6061Al composite

Abstract

Keywords

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