Internal friction and dynamic Young's modulus of aluminium composites reinforced in situ with TiB2 and Al2O3 particulates

K. F. Tam; S. C. Tjong

doi:10.1179/026708304225019939

Internal friction and dynamic Young's modulus of aluminium composites reinforced in situ with TiB2 and Al2O3 particulates

K. F. Tam, S. C. Tjong

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

8 Citations (Scopus)

Abstract

Aluminium based metal matrix composites (MMCs) reinforced in situ with TiB₂ and Al₂O₃ particulates were fabricated via the exothermic reaction of TiO₂, Al and B powders in the Al-TiO ₂-B system. The interfaces between in situ Al₂O ₃ and TiB₂ particulates and the aluminium matrix were clean and free from interfacial phase. The internal friction behaviour of such novel composites over a temperature range of 30-500°C was investigated using a dynamic mechanical analyser. The results showed that the Al₂O ₃ and TiB₂ particulates enhance the dynamic Young's modulus of Al significantly. Moreover, the in situ TiB₂ and Al ₂O₃ particulates also improve the damping capacity of Al. The damping capacity of the MMCs was found to increase with increasing temperature. The correlation between the damping capacity of MMCs with the microstructure is discussed.

Original language	English
Pages (from-to)	1055-1058
Journal	Materials Science and Technology
Volume	20
Issue number	8
DOIs	https://doi.org/10.1179/026708304225019939
Publication status	Published - Aug 2004

Research Keywords

Composites
Damping
Dynamic mechanical analysis
Internal friction
Particulates
Titanium diboride

Access Output

10.1179/026708304225019939

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{ff6a4593ca7243688b41906af55fa41d,

title = "Internal friction and dynamic Young's modulus of aluminium composites reinforced in situ with TiB2 and Al2O3 particulates",

abstract = "Aluminium based metal matrix composites (MMCs) reinforced in situ with TiB2 and Al2O3 particulates were fabricated via the exothermic reaction of TiO2, Al and B powders in the Al-TiO 2-B system. The interfaces between in situ Al2O 3 and TiB2 particulates and the aluminium matrix were clean and free from interfacial phase. The internal friction behaviour of such novel composites over a temperature range of 30-500°C was investigated using a dynamic mechanical analyser. The results showed that the Al2O 3 and TiB2 particulates enhance the dynamic Young's modulus of Al significantly. Moreover, the in situ TiB2 and Al 2O3 particulates also improve the damping capacity of Al. The damping capacity of the MMCs was found to increase with increasing temperature. The correlation between the damping capacity of MMCs with the microstructure is discussed.",

keywords = "Composites, Damping, Dynamic mechanical analysis, Internal friction, Particulates, Titanium diboride",

author = "Tam, {K. F.} and Tjong, {S. C.}",

year = "2004",

month = aug,

doi = "10.1179/026708304225019939",

language = "English",

volume = "20",

pages = "1055--1058",

journal = "Materials Science and Technology",

issn = "0267-0836",

publisher = "Sage Publications",

number = "8",

}

TY - JOUR

T1 - Internal friction and dynamic Young's modulus of aluminium composites reinforced in situ with TiB2 and Al2O3 particulates

AU - Tam, K. F.

AU - Tjong, S. C.

PY - 2004/8

Y1 - 2004/8

N2 - Aluminium based metal matrix composites (MMCs) reinforced in situ with TiB2 and Al2O3 particulates were fabricated via the exothermic reaction of TiO2, Al and B powders in the Al-TiO 2-B system. The interfaces between in situ Al2O 3 and TiB2 particulates and the aluminium matrix were clean and free from interfacial phase. The internal friction behaviour of such novel composites over a temperature range of 30-500°C was investigated using a dynamic mechanical analyser. The results showed that the Al2O 3 and TiB2 particulates enhance the dynamic Young's modulus of Al significantly. Moreover, the in situ TiB2 and Al 2O3 particulates also improve the damping capacity of Al. The damping capacity of the MMCs was found to increase with increasing temperature. The correlation between the damping capacity of MMCs with the microstructure is discussed.

AB - Aluminium based metal matrix composites (MMCs) reinforced in situ with TiB2 and Al2O3 particulates were fabricated via the exothermic reaction of TiO2, Al and B powders in the Al-TiO 2-B system. The interfaces between in situ Al2O 3 and TiB2 particulates and the aluminium matrix were clean and free from interfacial phase. The internal friction behaviour of such novel composites over a temperature range of 30-500°C was investigated using a dynamic mechanical analyser. The results showed that the Al2O 3 and TiB2 particulates enhance the dynamic Young's modulus of Al significantly. Moreover, the in situ TiB2 and Al 2O3 particulates also improve the damping capacity of Al. The damping capacity of the MMCs was found to increase with increasing temperature. The correlation between the damping capacity of MMCs with the microstructure is discussed.

KW - Composites

KW - Damping

KW - Dynamic mechanical analysis

KW - Internal friction

KW - Particulates

KW - Titanium diboride

UR - http://www.scopus.com/inward/record.url?scp=4344689349&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-4344689349&origin=recordpage

U2 - 10.1179/026708304225019939

DO - 10.1179/026708304225019939

M3 - RGC 21 - Publication in refereed journal

SN - 0267-0836

VL - 20

SP - 1055

EP - 1058

JO - Materials Science and Technology

JF - Materials Science and Technology

IS - 8

ER -

Internal friction and dynamic Young's modulus of aluminium composites reinforced in situ with TiB2 and Al2O3 particulates

Abstract

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this