Fatigue crack propagation characteristics in SiCp/6061-T6 composite

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

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)72-78
ページ数7
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
55
1
DOI
出版ステータス出版済み - 1991
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学

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