Micro-analyses of small cracks in 6061-T6 aluminium alloy subjected to high-cycle fatigue

Yoshimasa Takahashi, Takahiro Shikama, Hiroshi Noguchi

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

The growth of a small crack controlling the high-cycle fatigue life of a precipitation-strengthened 6061-T6 aluminium alloy was critically investigated. As the applied stress lowered, the small crack was arrested for a long period (over 106 cycles) at grain boundaries before regrowth, which resulted in a significantly slow growth process. The morphological and crystallographic details of the small crack were then analyzed with focused ion beam and transmission electron microscopy. It was revealed that the small crack was formed along fine persistent slip bands (PSBs) whose structure was fairly different from that reported for other metals. The concept of PSB-limited fatigue strength may be extended to include the present material type.

本文言語英語
ホスト出版物のタイトルAdvances in Fracture and Damage Mechanics XI
出版社Trans Tech Publications Ltd
ページ213-216
ページ数4
ISBN(印刷版)9783037854631
DOI
出版ステータス出版済み - 2012
イベント11th International Conference on Fracture and Damage Mechanics, FDM 2012 - Xian, 中国
継続期間: 9月 18 20129月 21 2012

出版物シリーズ

名前Key Engineering Materials
525-526
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

その他

その他11th International Conference on Fracture and Damage Mechanics, FDM 2012
国/地域中国
CityXian
Period9/18/129/21/12

!!!All Science Journal Classification (ASJC) codes

  • 材料科学一般
  • 材料力学
  • 機械工学

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