Ultrasonic Fatigue Properties of a High Strength Extruded Al Alloy

Norio Kawagoishi, Qiang Chen, Nu Yan, Qingyuan Wang, Eiji Kondo

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

In order to investigate the influence of loading frequency on the fatigue strength and fracture mechanism of a high strength Al alloy, ultrasonic fatigue tests were carried out for an extruded Al alloy 7075-T 6 and the results were compared with those of rotating bending fatigue tests. Fatigue strength of ultrasonic was higher than that of rotating bending. The crack initiation and the crack growth rate in ultrasonic fatigue were delayed compared with those of rotating bending fatigue. In case of ultrasonic fatigue, the direction of crack growth changed from tensile mode to shear mode and many voids were observed on the fracture surface in shear mode growth, whereas the crack propagated in tensile mode and striations were observed in rotating bending fatigue.

本文言語英語
ページ(範囲)1672-1677
ページ数6
ジャーナルNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
69
12
DOI
出版ステータス出版済み - 12 2003
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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