Investigation on Mode I propagation behavior of fatigue crack in precipitation-hardened aluminum alloy with different Mg content

S. F. Anis, M. Koyama, H. Noguchi

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

The influence of excess Mg on the Mode I propagation of fatigue crack was examined in newly developed precipitation-hardened Al alloy containing Zr and excess Mg. The aim of this study was to evaluate the underlying factor affecting fatigue crack growth rate in the stage II region. For this purpose, the rotating bending fatigue tests were performed in constant amplitude loading, and replication technique with an optical microscope was used to measure the crack growth in the Al alloys. Through analyses of the crack propagation on the specimen surface and striation formation of the fracture surface, the effects of excess Mg in the Al alloys were clarified to promote the occurrence of mode I fatigue crack, and decelerate the fatigue crack propagation. These facts suggest that the dynamic strain aging of Mg induces the formation of fatigue striation and reduce the driving force of the crack propagation. The findings were supported by the fractographic observations in the fatigue crack propagation region.

本文言語英語
ホスト出版物のタイトルEngineering and Innovative Materials V
編集者Muhammad Yahaya
出版社Trans Tech Publications Ltd
ページ143-147
ページ数5
ISBN(印刷版)9783038357704
DOI
出版ステータス出版済み - 1 1 2017
イベント5th International Conference on Engineering and Innovative Materials, ICEIM 2016 - Kuala Lumpur, マレーシア
継続期間: 9 10 20169 12 2016

出版物シリーズ

名前Materials Science Forum
889 MSF
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

その他

その他5th International Conference on Engineering and Innovative Materials, ICEIM 2016
Countryマレーシア
CityKuala Lumpur
Period9/10/169/12/16

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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