Statistical analysis of tensile properties of cast A357/Al2O3 MMCs

M Emamy; A Razaghian; S Kaboli; John Campbell

doi:10.1179/174328408X372092

Statistical analysis of tensile properties of cast A357/Al2O3 MMCs

M Emamy, A Razaghian, S Kaboli, John Campbell

Metallurgy and Materials

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5 Citations (Scopus)

Abstract

An analysis of the statistical distribution of the ultimate tensile strength (UTS) of cast Al2O3 containing aluminium matrix composite and its matrix alloy (A357) was carried out using different volume fractions of alumina particles (0, 5, 10 15 and 20%). The scatter of UTS data was assessed by the use of two parameter Weibull analysis. Results for the matrix alloy and metal matrix composites in the heat treated condition (T6) were compared. It was found that the addition of reinforcing particles to the matrix alloy resulted in lower UTS and ductility and increased scatter of results. Weibull modulus of cast MMC rods was found to be about 22 in the matrix alloy, falling to six in the 20% alumina MMC. Fractographic examinations of lower strength specimens showed that oxide films and the consequent porosity play an important role in fracture. The future potential, if MMCs can be manufactured without entrained oxides, is seen to be exciting.

Original language	English
Pages (from-to)	149-156
Number of pages	8
Journal	Materials Science and Technology
Volume	26
Issue number	2
DOIs	https://doi.org/10.1179/174328408X372092
Publication status	Published - 1 Feb 2010

Keywords

Metal matrix composites
Tensile properties
Cast aluminium alloy
Alumina particles
Weibull analysis

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10.1179/174328408X372092

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title = "Statistical analysis of tensile properties of cast A357/Al2O3 MMCs",

abstract = "An analysis of the statistical distribution of the ultimate tensile strength (UTS) of cast Al2O3 containing aluminium matrix composite and its matrix alloy (A357) was carried out using different volume fractions of alumina particles (0, 5, 10 15 and 20%). The scatter of UTS data was assessed by the use of two parameter Weibull analysis. Results for the matrix alloy and metal matrix composites in the heat treated condition (T6) were compared. It was found that the addition of reinforcing particles to the matrix alloy resulted in lower UTS and ductility and increased scatter of results. Weibull modulus of cast MMC rods was found to be about 22 in the matrix alloy, falling to six in the 20% alumina MMC. Fractographic examinations of lower strength specimens showed that oxide films and the consequent porosity play an important role in fracture. The future potential, if MMCs can be manufactured without entrained oxides, is seen to be exciting.",

keywords = "Metal matrix composites, Tensile properties, Cast aluminium alloy, Alumina particles, Weibull analysis",

author = "M Emamy and A Razaghian and S Kaboli and John Campbell",

year = "2010",

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doi = "10.1179/174328408X372092",

language = "English",

volume = "26",

pages = "149--156",

journal = "Materials Science and Technology",

issn = "1743-2847",

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TY - JOUR

T1 - Statistical analysis of tensile properties of cast A357/Al2O3 MMCs

AU - Emamy, M

AU - Razaghian, A

AU - Kaboli, S

AU - Campbell, John

PY - 2010/2/1

Y1 - 2010/2/1

N2 - An analysis of the statistical distribution of the ultimate tensile strength (UTS) of cast Al2O3 containing aluminium matrix composite and its matrix alloy (A357) was carried out using different volume fractions of alumina particles (0, 5, 10 15 and 20%). The scatter of UTS data was assessed by the use of two parameter Weibull analysis. Results for the matrix alloy and metal matrix composites in the heat treated condition (T6) were compared. It was found that the addition of reinforcing particles to the matrix alloy resulted in lower UTS and ductility and increased scatter of results. Weibull modulus of cast MMC rods was found to be about 22 in the matrix alloy, falling to six in the 20% alumina MMC. Fractographic examinations of lower strength specimens showed that oxide films and the consequent porosity play an important role in fracture. The future potential, if MMCs can be manufactured without entrained oxides, is seen to be exciting.

AB - An analysis of the statistical distribution of the ultimate tensile strength (UTS) of cast Al2O3 containing aluminium matrix composite and its matrix alloy (A357) was carried out using different volume fractions of alumina particles (0, 5, 10 15 and 20%). The scatter of UTS data was assessed by the use of two parameter Weibull analysis. Results for the matrix alloy and metal matrix composites in the heat treated condition (T6) were compared. It was found that the addition of reinforcing particles to the matrix alloy resulted in lower UTS and ductility and increased scatter of results. Weibull modulus of cast MMC rods was found to be about 22 in the matrix alloy, falling to six in the 20% alumina MMC. Fractographic examinations of lower strength specimens showed that oxide films and the consequent porosity play an important role in fracture. The future potential, if MMCs can be manufactured without entrained oxides, is seen to be exciting.

KW - Metal matrix composites

KW - Tensile properties

KW - Cast aluminium alloy

KW - Alumina particles

KW - Weibull analysis

U2 - 10.1179/174328408X372092

DO - 10.1179/174328408X372092

M3 - Article

SN - 1743-2847

VL - 26

SP - 149

EP - 156

JO - Materials Science and Technology

JF - Materials Science and Technology

IS - 2

ER -

Statistical analysis of tensile properties of cast A357/Al2O3 MMCs

Abstract

Keywords

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