High cycle fatigue response of in-situ Al-based composites containing TiB2 and Al2O3 submicron particles

S. C. Tjong; G. S. Wang; Y. W. Mai

doi:10.1016/j.compscitech.2005.01.012

High cycle fatigue response of in-situ Al-based composites containing TiB2 and Al2O3 submicron particles

S. C. Tjong
, G. S. Wang
, Y. W. Mai

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

78 Citations (Scopus)

Abstract

Aluminum-based composites reinforced with in situ TiB₂ and Al₂O₃ submicron particles were fabricated via reactive hot pressing of TiO₂, Al, B or B₂ O₃ powders. The high-cycle fatigue (HCF) behavior of such in situ composites at room temperature was investigated under stress-controlled conditions at different load ratios. The S-N curves were determined in fully reversed tension-compression loading. The microstructures and fracture surfaces of in situ composites were examined to reveal their fatigue failure mechanism. The composite prepared from the Al-TiO₂-B system and reinforced with TiB₂ and Al₂O₃ submicron particles exhibited superior fatigue endurance stress and life. However, the composite fabricated from the Al-TiO₂-B₂O₃ system had lower HCF resistance due to the formation of large intermetallic Al₃Ti blocks. The fatigue response characteristics of both in situ composites are discussed in terms of the intrinsic microstructural and extrinsic stress ratio effects. © 2005 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	1537-1546
Journal	Composites Science and Technology
Volume	65
Issue number	10
DOIs	https://doi.org/10.1016/j.compscitech.2005.01.012
Publication status	Published - Aug 2005

Research Keywords

A. Intermetallics
A. Metal-matrix composites
B. Fatigue
D. Fractography
E. Powder processing

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10.1016/j.compscitech.2005.01.012

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@article{09d923da3f1c44e99517e46361476a6d,

title = "High cycle fatigue response of in-situ Al-based composites containing TiB2 and Al2O3 submicron particles",

abstract = "Aluminum-based composites reinforced with in situ TiB2 and Al2O3 submicron particles were fabricated via reactive hot pressing of TiO2, Al, B or B2 O3 powders. The high-cycle fatigue (HCF) behavior of such in situ composites at room temperature was investigated under stress-controlled conditions at different load ratios. The S-N curves were determined in fully reversed tension-compression loading. The microstructures and fracture surfaces of in situ composites were examined to reveal their fatigue failure mechanism. The composite prepared from the Al-TiO2-B system and reinforced with TiB2 and Al2O3 submicron particles exhibited superior fatigue endurance stress and life. However, the composite fabricated from the Al-TiO2-B2O3 system had lower HCF resistance due to the formation of large intermetallic Al3Ti blocks. The fatigue response characteristics of both in situ composites are discussed in terms of the intrinsic microstructural and extrinsic stress ratio effects. {\textcopyright} 2005 Elsevier Ltd. All rights reserved.",

keywords = "A. Intermetallics, A. Metal-matrix composites, B. Fatigue, D. Fractography, E. Powder processing",

author = "Tjong, \{S. C.\} and Wang, \{G. S.\} and Mai, \{Y. W.\}",

year = "2005",

month = aug,

doi = "10.1016/j.compscitech.2005.01.012",

language = "English",

volume = "65",

pages = "1537--1546",

journal = "Composites Science and Technology",

issn = "0266-3538",

publisher = "Elsevier B.V.",

number = "10",

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TY - JOUR

T1 - High cycle fatigue response of in-situ Al-based composites containing TiB2 and Al2O3 submicron particles

AU - Tjong, S. C.

AU - Wang, G. S.

AU - Mai, Y. W.

PY - 2005/8

Y1 - 2005/8

N2 - Aluminum-based composites reinforced with in situ TiB2 and Al2O3 submicron particles were fabricated via reactive hot pressing of TiO2, Al, B or B2 O3 powders. The high-cycle fatigue (HCF) behavior of such in situ composites at room temperature was investigated under stress-controlled conditions at different load ratios. The S-N curves were determined in fully reversed tension-compression loading. The microstructures and fracture surfaces of in situ composites were examined to reveal their fatigue failure mechanism. The composite prepared from the Al-TiO2-B system and reinforced with TiB2 and Al2O3 submicron particles exhibited superior fatigue endurance stress and life. However, the composite fabricated from the Al-TiO2-B2O3 system had lower HCF resistance due to the formation of large intermetallic Al3Ti blocks. The fatigue response characteristics of both in situ composites are discussed in terms of the intrinsic microstructural and extrinsic stress ratio effects. © 2005 Elsevier Ltd. All rights reserved.

AB - Aluminum-based composites reinforced with in situ TiB2 and Al2O3 submicron particles were fabricated via reactive hot pressing of TiO2, Al, B or B2 O3 powders. The high-cycle fatigue (HCF) behavior of such in situ composites at room temperature was investigated under stress-controlled conditions at different load ratios. The S-N curves were determined in fully reversed tension-compression loading. The microstructures and fracture surfaces of in situ composites were examined to reveal their fatigue failure mechanism. The composite prepared from the Al-TiO2-B system and reinforced with TiB2 and Al2O3 submicron particles exhibited superior fatigue endurance stress and life. However, the composite fabricated from the Al-TiO2-B2O3 system had lower HCF resistance due to the formation of large intermetallic Al3Ti blocks. The fatigue response characteristics of both in situ composites are discussed in terms of the intrinsic microstructural and extrinsic stress ratio effects. © 2005 Elsevier Ltd. All rights reserved.

KW - A. Intermetallics

KW - A. Metal-matrix composites

KW - B. Fatigue

KW - D. Fractography

KW - E. Powder processing

UR - https://www.scopus.com/pages/publications/18944386292

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-18944386292&origin=recordpage

U2 - 10.1016/j.compscitech.2005.01.012

DO - 10.1016/j.compscitech.2005.01.012

M3 - RGC 21 - Publication in refereed journal

SN - 0266-3538

VL - 65

SP - 1537

EP - 1546

JO - Composites Science and Technology

JF - Composites Science and Technology

IS - 10

ER -

High cycle fatigue response of in-situ Al-based composites containing TiB2 and Al2O3 submicron particles

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