Fretting Fatigue Characteristic of Aluminum Alloy (Al2024-T4) in Vacuum(<Special Issue>Design or Process Technology for Mechanical and Adhesive Joint Structures)

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  • 真空中におけるアルミニウム合金(Al2024-T4)のフレッティング疲労特性(<小特集>締結・接合・接着部の評価技術)
  • 真空中におけるアルミニウム合金(AI2024-T4)のフレッティング疲労特性
  • シンクウ チュウ ニ オケル アルミニウム ゴウキン AI2024 T4 ノ フレッティング ヒロウ トクセイ
  • Fretting fatigue characteristics of aluminum alloy (Al2024-T4) in vacuum

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Abstract

Plain fatigue, fatigue crack growth and fretting fatigue tests of Al alloy (Al2024-T4) in air and in vacuum were carried out using a fatigue testing machine with SEM for in-situ observation. Fretting fatigue strength in vacuum was higher than that in air, while it was lower than plain fatigue strength in vacuum. High tangential force in vacuum would result in earlier fretting fatigue crack nucleation. However, high fatigue crack growth resistance would take dominant role for higher fretting fatigue strength in vacuum.

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