Fatigue crack propagation characteristics in SiCp/6061-T6 composite

Toshiro Kobayashi; Hiroyoshi Iwanari; Shinji Hakamata; Mitsuo Niinomi; Hiroyuki Toda

doi:10.2320/jinstmet1952.55.1_72

Fatigue crack propagation characteristics in SiC_p/6061-T6 composite

Toshiro Kobayashi, Hiroyoshi Iwanari, Shinji Hakamata, Mitsuo Niinomi, Hiroyuki Toda

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

9 Citations (Scopus)

Abstract

The effect of volume fraction of SiC particles on the fatigue crack propagation characteristics of 6061 aluminum alloys reinforced with SiC particles (SiC_p/6061-T6 composites) manufactured by powder metallurgy was investigated. In a higher stress intensity range, unstable fatigue crack propagation was found as the threshold stress intensity range ΔK_th and ΔK_eff.th increased with increasing content of SiC particles. ΔK_eff.th is suggested to be solely a function of the mean SiC particle size and to be independent of the volume fraction. This implies that for near-threshold crack extension, the maximum plastic zone size at the crack tip must exceed the mean SiC particle size.

Original language	English
Pages (from-to)	72-78
Number of pages	7
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	55
Issue number	1
DOIs	https://doi.org/10.2320/jinstmet1952.55.1_72
Publication status	Published - 1991
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.2320/jinstmet1952.55.1_72

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abstract = "The effect of volume fraction of SiC particles on the fatigue crack propagation characteristics of 6061 aluminum alloys reinforced with SiC particles (SiCp/6061-T6 composites) manufactured by powder metallurgy was investigated. In a higher stress intensity range, unstable fatigue crack propagation was found as the threshold stress intensity range ΔKth and ΔKeff.th increased with increasing content of SiC particles. ΔKeff.th is suggested to be solely a function of the mean SiC particle size and to be independent of the volume fraction. This implies that for near-threshold crack extension, the maximum plastic zone size at the crack tip must exceed the mean SiC particle size.",

author = "Toshiro Kobayashi and Hiroyoshi Iwanari and Shinji Hakamata and Mitsuo Niinomi and Hiroyuki Toda",

year = "1991",

doi = "10.2320/jinstmet1952.55.1_72",

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AU - Kobayashi, Toshiro

AU - Iwanari, Hiroyoshi

AU - Hakamata, Shinji

AU - Niinomi, Mitsuo

AU - Toda, Hiroyuki

PY - 1991

Y1 - 1991

N2 - The effect of volume fraction of SiC particles on the fatigue crack propagation characteristics of 6061 aluminum alloys reinforced with SiC particles (SiCp/6061-T6 composites) manufactured by powder metallurgy was investigated. In a higher stress intensity range, unstable fatigue crack propagation was found as the threshold stress intensity range ΔKth and ΔKeff.th increased with increasing content of SiC particles. ΔKeff.th is suggested to be solely a function of the mean SiC particle size and to be independent of the volume fraction. This implies that for near-threshold crack extension, the maximum plastic zone size at the crack tip must exceed the mean SiC particle size.

AB - The effect of volume fraction of SiC particles on the fatigue crack propagation characteristics of 6061 aluminum alloys reinforced with SiC particles (SiCp/6061-T6 composites) manufactured by powder metallurgy was investigated. In a higher stress intensity range, unstable fatigue crack propagation was found as the threshold stress intensity range ΔKth and ΔKeff.th increased with increasing content of SiC particles. ΔKeff.th is suggested to be solely a function of the mean SiC particle size and to be independent of the volume fraction. This implies that for near-threshold crack extension, the maximum plastic zone size at the crack tip must exceed the mean SiC particle size.

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Fatigue crack propagation characteristics in SiC_p/6061-T6 composite

Abstract

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