時効硬化Al合金6061-T6の超音波疲労特性

Translated title of the contribution: Ultrasonic Fatigue Properties of an Age-Hardened Al Alloy 6061-T6

皮籠石 紀雄, 陳 強, 燕 怒, 王 清遠, 後藤 真宏

Research output: Contribution to journalArticle

Abstract

In order to investigate the influence of loading frequency on the fatigue properties of Al alloy, ultrasonic fatigue tests were carried out for an age-hardened Al alloy, 6061-T6. The results were compared with those of rotating bending fatigue in view points of initiation and propagation behavior of a crack and fracture mechanism. Fatigue life was longer in ultrasonic fatigue than in rotating bending fatigue, which was mainly caused by the suppression of crack initiation. In ultrasonic fatigue, many fatigue voids and cleavage cracks were observed on the fracture surface in addition to the shear mode cracks, striations and dimples, which were typical fracture modes in rotating bending.
Translated title of the contributionUltrasonic Fatigue Properties of an Age-Hardened Al Alloy 6061-T6
Original languageJapanese
Pages (from-to)1139-1145
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume70
Issue number696
DOIs
Publication statusPublished - Aug 25 2004

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